feat(ui): expose process control client methods

Co-Authored-By: Virgil <virgil@lethean.io>

CLAUDE.md

@@ -20,12 +20,11 @@ core go vet               # Vet
 
 The package has three layers, all in the root `process` package (plus a `exec` subpackage):
 
-### Layer 1: Process Execution (service.go, process.go)
+### Layer 1: Process Execution (service.go, process.go, process_global.go)
 
 `Service` is a Core service (`*core.ServiceRuntime[Options]`) that manages all `Process` instances. It spawns subprocesses, pipes stdout/stderr through goroutines, captures output to a `RingBuffer`, and broadcasts IPC actions (`ActionProcessStarted`, `ActionProcessOutput`, `ActionProcessExited`, `ActionProcessKilled` — defined in actions.go).
 
-The legacy global singleton API (`process_global.go`) was removed in favor of
+`process_global.go` provides package-level convenience functions (`Start`, `Run`, `Kill`, `List`) that delegate to a global `Service` singleton initialized via `Init(core)`. Follows the same pattern as Go's `i18n` package.
-explicit Core service registration.
 
 ### Layer 2: Daemon Lifecycle (daemon.go, pidfile.go, health.go, registry.go)
 
@@ -46,19 +45,19 @@ Builder-pattern wrapper around `os/exec` with structured logging via a pluggable
 
 ## Key Patterns
 
-- **Core integration**: `Service` embeds `*core.ServiceRuntime[Options]` and uses `s.Core().ACTION(...)` to broadcast typed action messages. Tests create a Core instance via `framework.New(framework.WithService(Register))`.
+- **Core integration**: `Service` embeds `*core.ServiceRuntime[Options]` and uses `s.Core().ACTION(...)` to broadcast typed action messages. Tests create a Core instance via `framework.New(framework.WithName("process", NewService(...)))`.
 - **Output capture**: All process output goes through a fixed-size `RingBuffer` (default 1MB). Oldest data is silently overwritten when full. Set `RunOptions.DisableCapture` to skip buffering for long-running processes where output is only streamed via IPC.
 - **Process lifecycle**: Status transitions are `StatusPending → StatusRunning → StatusExited|StatusFailed|StatusKilled`. The `done` channel closes on exit; use `<-proc.Done()` or `proc.Wait()`.
 - **Detach / process group isolation**: Set `RunOptions.Detach = true` to run the subprocess in its own process group (`Setpgid`). Detached processes use `context.Background()` so they survive parent context cancellation and parent death.
 - **Graceful shutdown**: `Service.OnShutdown` kills all running processes. `Daemon.Stop()` performs ordered teardown: sets health to not-ready → shuts down health server → releases PID file → unregisters from registry. `DaemonOptions.ShutdownTimeout` (default 30 s) bounds the shutdown context.
 - **Auto-registration**: Pass a `Registry` and `RegistryEntry` in `DaemonOptions` to automatically register the daemon on `Start()` and unregister on `Stop()`.
 - **PID liveness checks**: Both `PIDFile` and `Registry` use `proc.Signal(syscall.Signal(0))` to check if a PID is alive before trusting stored state.
-- **Error handling**: All errors MUST use `core.E()`, never `fmt.Errorf` or
+- **Error handling**: All errors MUST use `coreerr.E()` from `go-log` (imported as `coreerr`), never `fmt.Errorf` or `errors.New`. Sentinel errors are package-level vars created with `coreerr.E("", "message", nil)`.
-  `errors.New`. Sentinel errors are package-level vars created with `core.E("", "message", nil)`.
 
 ## Dependencies
 
 - `dappco.re/go/core` — Core DI framework, IPC actions, `ServiceRuntime`
+- `dappco.re/go/core/log` — Structured error constructor (`coreerr.E()`)
 - `dappco.re/go/core/io` — Filesystem abstraction (`coreio.Local`) used by PIDFile and Registry
 - `github.com/stretchr/testify` — test assertions (require/assert)
 

actions.go

@@ -1,16 +1,195 @@
 package process
 
 import (
-	"context"
 	"syscall"
 	"time"
-
-	"dappco.re/go/core"
 )
 
 // --- ACTION messages (broadcast via Core.ACTION) ---
 
+// TaskProcessStart requests asynchronous process execution through Core.PERFORM.
+// The handler returns a snapshot of the started process immediately.
+//
+// Example:
+//
+//	c.PERFORM(process.TaskProcessStart{Command: "sleep", Args: []string{"10"}})
+type TaskProcessStart struct {
+	Command string
+	Args    []string
+	Dir     string
+	Env     []string
+	// DisableCapture skips buffering process output before returning it.
+	DisableCapture bool
+	// Detach runs the command in its own process group.
+	Detach bool
+	// Timeout bounds the execution duration.
+	Timeout time.Duration
+	// GracePeriod controls SIGTERM-to-SIGKILL escalation.
+	GracePeriod time.Duration
+	// KillGroup terminates the entire process group instead of only the leader.
+	KillGroup bool
+}
+
+// TaskProcessRun requests synchronous command execution through Core.PERFORM.
+// The handler returns the combined command output on success.
+//
+// Example:
+//
+//	c.PERFORM(process.TaskProcessRun{Command: "echo", Args: []string{"hello"}})
+type TaskProcessRun struct {
+	Command string
+	Args    []string
+	Dir     string
+	Env     []string
+	// DisableCapture skips buffering process output before returning it.
+	DisableCapture bool
+	// Detach runs the command in its own process group.
+	Detach bool
+	// Timeout bounds the execution duration.
+	Timeout time.Duration
+	// GracePeriod controls SIGTERM-to-SIGKILL escalation.
+	GracePeriod time.Duration
+	// KillGroup terminates the entire process group instead of only the leader.
+	KillGroup bool
+}
+
+// TaskProcessKill requests termination of a managed process by ID or PID.
+//
+// Example:
+//
+//	c.PERFORM(process.TaskProcessKill{ID: "proc-1"})
+type TaskProcessKill struct {
+	// ID identifies a managed process started by this service.
+	ID string
+	// PID targets a process directly when ID is not available.
+	PID int
+}
+
+// TaskProcessSignal requests signalling a managed process by ID or PID through Core.PERFORM.
+// Signal 0 is allowed for liveness checks.
+//
+// Example:
+//
+//	c.PERFORM(process.TaskProcessSignal{ID: "proc-1", Signal: syscall.SIGTERM})
+type TaskProcessSignal struct {
+	// ID identifies a managed process started by this service.
+	ID string
+	// PID targets a process directly when ID is not available.
+	PID int
+	// Signal is delivered to the process or process group.
+	Signal syscall.Signal
+}
+
+// TaskProcessGet requests a snapshot of a managed process through Core.PERFORM.
+//
+// Example:
+//
+//	c.PERFORM(process.TaskProcessGet{ID: "proc-1"})
+type TaskProcessGet struct {
+	// ID identifies a managed process started by this service.
+	ID string
+}
+
+// TaskProcessWait waits for a managed process to finish through Core.PERFORM.
+// Successful exits return an Info snapshot. Unsuccessful exits return a
+// TaskProcessWaitError value that preserves the final snapshot.
+//
+// Example:
+//
+//	c.PERFORM(process.TaskProcessWait{ID: "proc-1"})
+type TaskProcessWait struct {
+	// ID identifies a managed process started by this service.
+	ID string
+}
+
+// TaskProcessWaitError is returned as the task value when TaskProcessWait
+// completes with a non-successful process outcome. It preserves the final
+// process snapshot while still behaving like the underlying wait error.
+type TaskProcessWaitError struct {
+	Info Info
+	Err  error
+}
+
+// Error implements error.
+func (e *TaskProcessWaitError) Error() string {
+	if e == nil || e.Err == nil {
+		return ""
+	}
+	return e.Err.Error()
+}
+
+// Unwrap returns the underlying wait error.
+func (e *TaskProcessWaitError) Unwrap() error {
+	if e == nil {
+		return nil
+	}
+	return e.Err
+}
+
+// TaskProcessOutput requests the captured output of a managed process through Core.PERFORM.
+//
+// Example:
+//
+//	c.PERFORM(process.TaskProcessOutput{ID: "proc-1"})
+type TaskProcessOutput struct {
+	// ID identifies a managed process started by this service.
+	ID string
+}
+
+// TaskProcessInput writes data to the stdin of a managed process through Core.PERFORM.
+//
+// Example:
+//
+//	c.PERFORM(process.TaskProcessInput{ID: "proc-1", Input: "hello\n"})
+type TaskProcessInput struct {
+	// ID identifies a managed process started by this service.
+	ID string
+	// Input is written verbatim to the process stdin pipe.
+	Input string
+}
+
+// TaskProcessCloseStdin closes the stdin pipe of a managed process through Core.PERFORM.
+//
+// Example:
+//
+//	c.PERFORM(process.TaskProcessCloseStdin{ID: "proc-1"})
+type TaskProcessCloseStdin struct {
+	// ID identifies a managed process started by this service.
+	ID string
+}
+
+// TaskProcessList requests a snapshot of managed processes through Core.PERFORM.
+// If RunningOnly is true, only active processes are returned.
+//
+// Example:
+//
+//	c.PERFORM(process.TaskProcessList{RunningOnly: true})
+type TaskProcessList struct {
+	RunningOnly bool
+}
+
+// TaskProcessRemove removes a completed managed process through Core.PERFORM.
+//
+// Example:
+//
+//	c.PERFORM(process.TaskProcessRemove{ID: "proc-1"})
+type TaskProcessRemove struct {
+	// ID identifies a managed process started by this service.
+	ID string
+}
+
+// TaskProcessClear removes all completed managed processes through Core.PERFORM.
+//
+// Example:
+//
+//	c.PERFORM(process.TaskProcessClear{})
+type TaskProcessClear struct{}
+
 // ActionProcessStarted is broadcast when a process begins execution.
+//
+// Example:
+//
+//	case process.ActionProcessStarted: fmt.Println("started", msg.ID)
 type ActionProcessStarted struct {
 	ID      string
 	Command string
@@ -21,6 +200,10 @@ type ActionProcessStarted struct {
 
 // ActionProcessOutput is broadcast for each line of output.
 // Subscribe to this for real-time streaming.
+//
+// Example:
+//
+//	case process.ActionProcessOutput: fmt.Println(msg.Line)
 type ActionProcessOutput struct {
 	ID     string
 	Line   string
@@ -29,126 +212,23 @@ type ActionProcessOutput struct {
 
 // ActionProcessExited is broadcast when a process completes.
 // Check ExitCode for success (0) or failure.
+//
+// Example:
+//
+//	case process.ActionProcessExited: fmt.Println(msg.ExitCode)
 type ActionProcessExited struct {
 	ID       string
 	ExitCode int
 	Duration time.Duration
-	Error    error // Non-nil if failed to start or was killed
+	Error    error // Set for failed starts, non-zero exits, or killed processes.
 }
 
 // ActionProcessKilled is broadcast when a process is terminated.
+//
+// Example:
+//
+//	case process.ActionProcessKilled: fmt.Println(msg.Signal)
 type ActionProcessKilled struct {
 	ID     string
 	Signal string
 }
-
-// --- Core Action Handlers ---------------------------------------------------
-
-func (s *Service) handleRun(ctx context.Context, opts core.Options) core.Result {
-	command := opts.String("command")
-	if command == "" {
-		return core.Result{Value: core.E("process.run", "command is required", nil), OK: false}
-	}
-
-	runOpts := RunOptions{
-		Command: command,
-		Dir:     opts.String("dir"),
-	}
-	if r := opts.Get("args"); r.OK {
-		runOpts.Args = optionStrings(r.Value)
-	}
-	if r := opts.Get("env"); r.OK {
-		runOpts.Env = optionStrings(r.Value)
-	}
-
-	return s.runCommand(ctx, runOpts)
-}
-
-func (s *Service) handleStart(ctx context.Context, opts core.Options) core.Result {
-	command := opts.String("command")
-	if command == "" {
-		return core.Result{Value: core.E("process.start", "command is required", nil), OK: false}
-	}
-
-	runOpts := RunOptions{
-		Command: command,
-		Dir:     opts.String("dir"),
-		Detach:  opts.Bool("detach"),
-	}
-	if r := opts.Get("args"); r.OK {
-		runOpts.Args = optionStrings(r.Value)
-	}
-	if r := opts.Get("env"); r.OK {
-		runOpts.Env = optionStrings(r.Value)
-	}
-
-	r := s.StartWithOptions(ctx, runOpts)
-	if !r.OK {
-		return r
-	}
-	return core.Result{Value: r.Value.(*ManagedProcess).ID, OK: true}
-}
-
-func (s *Service) handleKill(_ context.Context, opts core.Options) core.Result {
-	id := opts.String("id")
-	if id != "" {
-		if err := s.Kill(id); err != nil {
-			if core.Is(err, ErrProcessNotFound) {
-				return core.Result{Value: core.E("process.kill", core.Concat("not found: ", id), nil), OK: false}
-			}
-			return core.Result{Value: core.E("process.kill", core.Concat("kill failed: ", id), err), OK: false}
-		}
-		return core.Result{OK: true}
-	}
-
-	pid := opts.Int("pid")
-	if pid > 0 {
-		proc, err := processHandle(pid)
-		if err != nil {
-			return core.Result{Value: core.E("process.kill", core.Concat("find pid failed: ", core.Sprintf("%d", pid)), err), OK: false}
-		}
-		if err := proc.Signal(syscall.SIGTERM); err != nil {
-			return core.Result{Value: core.E("process.kill", core.Concat("signal failed: ", core.Sprintf("%d", pid)), err), OK: false}
-		}
-		return core.Result{OK: true}
-	}
-
-	return core.Result{Value: core.E("process.kill", "need id or pid", nil), OK: false}
-}
-
-func (s *Service) handleList(_ context.Context, _ core.Options) core.Result {
-	return core.Result{Value: s.managed.Names(), OK: true}
-}
-
-func (s *Service) handleGet(_ context.Context, opts core.Options) core.Result {
-	id := opts.String("id")
-	if id == "" {
-		return core.Result{Value: core.E("process.get", "id is required", nil), OK: false}
-	}
-	proc, err := s.Get(id)
-	if err != nil {
-		return core.Result{Value: core.E("process.get", core.Concat("not found: ", id), err), OK: false}
-	}
-	return core.Result{Value: proc.Info(), OK: true}
-}
-
-func optionStrings(value any) []string {
-	switch typed := value.(type) {
-	case nil:
-		return nil
-	case []string:
-		return append([]string(nil), typed...)
-	case []any:
-		result := make([]string, 0, len(typed))
-		for _, item := range typed {
-			text, ok := item.(string)
-			if !ok {
-				return nil
-			}
-			result = append(result, text)
-		}
-		return result
-	default:
-		return nil
-	}
-}

buffer.go

@@ -4,8 +4,6 @@ import "sync"
 
 // RingBuffer is a fixed-size circular buffer that overwrites old data.
 // Thread-safe for concurrent reads and writes.
-//
-//	rb := process.NewRingBuffer(1024)
 type RingBuffer struct {
 	data  []byte
 	size  int
@@ -16,13 +14,10 @@ type RingBuffer struct {
 }
 
 // NewRingBuffer creates a ring buffer with the given capacity.
-//
-//	rb := process.NewRingBuffer(256)
 func NewRingBuffer(size int) *RingBuffer {
-	if size <= 0 {
+	if size < 0 {
-		size = 1
+		size = 0
 	}
-
 	return &RingBuffer{
 		data: make([]byte, size),
 		size: size,
@@ -34,6 +29,10 @@ func (rb *RingBuffer) Write(p []byte) (n int, err error) {
 	rb.mu.Lock()
 	defer rb.mu.Unlock()
 
+	if rb.size == 0 {
+		return len(p), nil
+	}
+
 	for _, b := range p {
 		rb.data[rb.end] = b
 		rb.end = (rb.end + 1) % rb.size

buffer_test.go

@@ -6,7 +6,7 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func TestRingBuffer_Basics_Good(t *testing.T) {
+func TestRingBuffer(t *testing.T) {
 	t.Run("write and read", func(t *testing.T) {
 		rb := NewRingBuffer(10)
 
@@ -69,4 +69,18 @@ func TestRingBuffer_Basics_Good(t *testing.T) {
 		bytes[0] = 'x'
 		assert.Equal(t, "hello", rb.String())
 	})
+
+	t.Run("zero or negative capacity is a no-op", func(t *testing.T) {
+		for _, size := range []int{0, -1} {
+			rb := NewRingBuffer(size)
+
+			n, err := rb.Write([]byte("discarded"))
+			assert.NoError(t, err)
+			assert.Equal(t, len("discarded"), n)
+			assert.Equal(t, 0, rb.Cap())
+			assert.Equal(t, 0, rb.Len())
+			assert.Equal(t, "", rb.String())
+			assert.Nil(t, rb.Bytes())
+		}
+	})
 }

daemon.go

@@ -2,15 +2,22 @@ package process
 
 import (
 	"context"
+	"errors"
+	"os"
 	"sync"
 	"time"
 
-	"dappco.re/go/core"
+	coreerr "dappco.re/go/core/log"
 )
 
 // DaemonOptions configures daemon mode execution.
 //
-//	opts := process.DaemonOptions{PIDFile: "/tmp/process.pid", HealthAddr: "127.0.0.1:0"}
+// Example:
+//
+//	opts := process.DaemonOptions{
+//	    PIDFile: "/var/run/myapp.pid",
+//	    HealthAddr: "127.0.0.1:0",
+//	}
 type DaemonOptions struct {
 	// PIDFile path for single-instance enforcement.
 	// Leave empty to skip PID file management.
@@ -32,13 +39,11 @@ type DaemonOptions struct {
 	Registry *Registry
 
 	// RegistryEntry provides the code and daemon name for registration.
-	// PID, Health, and Started are filled automatically.
+	// PID, Health, Project, Binary, and Started are filled automatically.
 	RegistryEntry DaemonEntry
 }
 
 // Daemon manages daemon lifecycle: PID file, health server, graceful shutdown.
-//
-//	daemon := process.NewDaemon(process.DaemonOptions{HealthAddr: "127.0.0.1:0"})
 type Daemon struct {
 	opts    DaemonOptions
 	pid     *PIDFile
@@ -49,7 +54,9 @@ type Daemon struct {
 
 // NewDaemon creates a daemon runner with the given options.
 //
-//	daemon := process.NewDaemon(process.DaemonOptions{PIDFile: "/tmp/process.pid"})
+// Example:
+//
+//	daemon := process.NewDaemon(process.DaemonOptions{HealthAddr: "127.0.0.1:0"})
 func NewDaemon(opts DaemonOptions) *Daemon {
 	if opts.ShutdownTimeout == 0 {
 		opts.ShutdownTimeout = 30 * time.Second
@@ -72,12 +79,16 @@ func NewDaemon(opts DaemonOptions) *Daemon {
 }
 
 // Start initialises the daemon (PID file, health server).
+//
+// Example:
+//
+//	if err := daemon.Start(); err != nil { return err }
 func (d *Daemon) Start() error {
 	d.mu.Lock()
 	defer d.mu.Unlock()
 
 	if d.running {
-		return core.E("daemon.start", "daemon already running", nil)
+		return coreerr.E("Daemon.Start", "daemon already running", nil)
 	}
 
 	if d.pid != nil {
@@ -95,38 +106,52 @@ func (d *Daemon) Start() error {
 		}
 	}
 
-	d.running = true
-
 	// Auto-register if registry is set
 	if d.opts.Registry != nil {
 		entry := d.opts.RegistryEntry
-		entry.PID = currentPID()
+		entry.PID = os.Getpid()
 		if d.health != nil {
 			entry.Health = d.health.Addr()
 		}
+		if entry.Project == "" {
+			if wd, err := os.Getwd(); err == nil {
+				entry.Project = wd
+			}
+		}
+		if entry.Binary == "" {
+			if binary, err := os.Executable(); err == nil {
+				entry.Binary = binary
+			}
+		}
 		if err := d.opts.Registry.Register(entry); err != nil {
 			if d.health != nil {
-				shutdownCtx, cancel := context.WithTimeout(context.Background(), d.opts.ShutdownTimeout)
+				_ = d.health.Stop(context.Background())
-				_ = d.health.Stop(shutdownCtx)
-				cancel()
 			}
 			if d.pid != nil {
 				_ = d.pid.Release()
 			}
-			d.running = false
+			return coreerr.E("Daemon.Start", "registry", err)
-			return core.E("daemon.start", "registry", err)
 		}
 	}
 
+	d.running = true
 	return nil
 }
 
 // Run blocks until the context is cancelled.
+//
+// Example:
+//
+//	if err := daemon.Run(ctx); err != nil { return err }
 func (d *Daemon) Run(ctx context.Context) error {
+	if ctx == nil {
+		return coreerr.E("Daemon.Run", "daemon context is required", ErrDaemonContextRequired)
+	}
+
 	d.mu.Lock()
 	if !d.running {
 		d.mu.Unlock()
-		return core.E("daemon.run", "daemon not started - call Start() first", nil)
+		return coreerr.E("Daemon.Run", "daemon not started - call Start() first", nil)
 	}
 	d.mu.Unlock()
 
@@ -136,6 +161,10 @@ func (d *Daemon) Run(ctx context.Context) error {
 }
 
 // Stop performs graceful shutdown.
+//
+// Example:
+//
+//	_ = daemon.Stop()
 func (d *Daemon) Stop() error {
 	d.mu.Lock()
 	defer d.mu.Unlock()
@@ -149,45 +178,75 @@ func (d *Daemon) Stop() error {
 	shutdownCtx, cancel := context.WithTimeout(context.Background(), d.opts.ShutdownTimeout)
 	defer cancel()
 
+	// Mark the daemon unavailable before tearing down listeners or registry state.
 	if d.health != nil {
 		d.health.SetReady(false)
+	}
+
+	if d.health != nil {
 		if err := d.health.Stop(shutdownCtx); err != nil {
-			errs = append(errs, core.E("daemon.stop", "health server", err))
+			errs = append(errs, coreerr.E("Daemon.Stop", "health server", err))
 		}
 	}
 
 	if d.pid != nil {
-		if err := d.pid.Release(); err != nil && !isNotExist(err) {
+		if err := d.pid.Release(); err != nil && !os.IsNotExist(err) {
-			errs = append(errs, core.E("daemon.stop", "pid file", err))
+			errs = append(errs, coreerr.E("Daemon.Stop", "pid file", err))
 		}
 	}
 
-	// Auto-unregister
+	// Auto-unregister after the daemon has stopped serving traffic and
+	// relinquished its PID file.
 	if d.opts.Registry != nil {
 		if err := d.opts.Registry.Unregister(d.opts.RegistryEntry.Code, d.opts.RegistryEntry.Daemon); err != nil {
-			errs = append(errs, core.E("daemon.stop", "registry", err))
+			errs = append(errs, coreerr.E("Daemon.Stop", "registry", err))
 		}
 	}
 
 	d.running = false
 
 	if len(errs) > 0 {
-		return core.ErrorJoin(errs...)
+		return errors.Join(errs...)
 	}
 	return nil
 }
 
-// SetReady sets the daemon readiness status for health checks.
+// SetReady sets the daemon readiness status for `/ready`.
+//
+// Example:
+//
+//	daemon.SetReady(false)
 func (d *Daemon) SetReady(ready bool) {
 	if d.health != nil {
 		d.health.SetReady(ready)
 	}
 }
 
+// Ready reports whether the daemon is currently ready for traffic.
+//
+// Example:
+//
+//	if daemon.Ready() {
+//	    // expose the service to callers
+//	}
+func (d *Daemon) Ready() bool {
+	if d.health != nil {
+		return d.health.Ready()
+	}
+	return false
+}
+
 // HealthAddr returns the health server address, or empty if disabled.
+//
+// Example:
+//
+//	addr := daemon.HealthAddr()
 func (d *Daemon) HealthAddr() string {
 	if d.health != nil {
 		return d.health.Addr()
 	}
 	return ""
 }
+
+// ErrDaemonContextRequired is returned when Run is called without a context.
+var ErrDaemonContextRequired = coreerr.E("", "daemon context is required", nil)

daemon_test.go

@@ -4,16 +4,17 @@ import (
 	"context"
 	"net/http"
 	"os"
+	"path/filepath"
+	"sync"
 	"testing"
 	"time"
 
-	"dappco.re/go/core"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
 
-func TestDaemon_Lifecycle_Good(t *testing.T) {
+func TestDaemon_StartAndStop(t *testing.T) {
-	pidPath := core.JoinPath(t.TempDir(), "test.pid")
+	pidPath := filepath.Join(t.TempDir(), "test.pid")
 
 	d := NewDaemon(DaemonOptions{
 		PIDFile:         pidPath,
@@ -36,7 +37,166 @@ func TestDaemon_Lifecycle_Good(t *testing.T) {
 	require.NoError(t, err)
 }
 
-func TestDaemon_AlreadyRunning_Bad(t *testing.T) {
+func TestDaemon_StopMarksNotReadyBeforeShutdownCompletes(t *testing.T) {
+	blockCheck := make(chan struct{})
+	checkEntered := make(chan struct{})
+	var once sync.Once
+
+	d := NewDaemon(DaemonOptions{
+		HealthAddr:      "127.0.0.1:0",
+		ShutdownTimeout: 5 * time.Second,
+		HealthChecks: []HealthCheck{
+			func() error {
+				once.Do(func() { close(checkEntered) })
+				<-blockCheck
+				return nil
+			},
+		},
+	})
+
+	err := d.Start()
+	require.NoError(t, err)
+
+	addr := d.HealthAddr()
+	require.NotEmpty(t, addr)
+
+	healthErr := make(chan error, 1)
+	go func() {
+		resp, err := http.Get("http://" + addr + "/health")
+		if err != nil {
+			healthErr <- err
+			return
+		}
+		_ = resp.Body.Close()
+		healthErr <- nil
+	}()
+
+	select {
+	case <-checkEntered:
+	case <-time.After(2 * time.Second):
+		t.Fatal("/health request did not enter the blocking check")
+	}
+
+	stopDone := make(chan error, 1)
+	go func() {
+		stopDone <- d.Stop()
+	}()
+
+	require.Eventually(t, func() bool {
+		return !d.Ready()
+	}, 500*time.Millisecond, 10*time.Millisecond, "daemon should become not ready before shutdown completes")
+
+	select {
+	case err := <-stopDone:
+		t.Fatalf("daemon stopped too early: %v", err)
+	default:
+	}
+
+	close(blockCheck)
+
+	select {
+	case err := <-stopDone:
+		require.NoError(t, err)
+	case <-time.After(2 * time.Second):
+		t.Fatal("daemon stop did not finish after health check unblocked")
+	}
+
+	select {
+	case err := <-healthErr:
+		require.NoError(t, err)
+	case <-time.After(2 * time.Second):
+		t.Fatal("/health request did not finish")
+	}
+}
+
+func TestDaemon_StopUnregistersAfterHealthShutdownCompletes(t *testing.T) {
+	blockCheck := make(chan struct{})
+	checkEntered := make(chan struct{})
+	var once sync.Once
+	dir := t.TempDir()
+	reg := NewRegistry(filepath.Join(dir, "registry"))
+
+	d := NewDaemon(DaemonOptions{
+		HealthAddr:      "127.0.0.1:0",
+		ShutdownTimeout: 5 * time.Second,
+		Registry:        reg,
+		RegistryEntry: DaemonEntry{
+			Code:   "test-app",
+			Daemon: "serve",
+		},
+		HealthChecks: []HealthCheck{
+			func() error {
+				once.Do(func() { close(checkEntered) })
+				<-blockCheck
+				return nil
+			},
+		},
+	})
+
+	err := d.Start()
+	require.NoError(t, err)
+
+	addr := d.HealthAddr()
+	require.NotEmpty(t, addr)
+
+	healthErr := make(chan error, 1)
+	go func() {
+		resp, err := http.Get("http://" + addr + "/health")
+		if err != nil {
+			healthErr <- err
+			return
+		}
+		_ = resp.Body.Close()
+		healthErr <- nil
+	}()
+
+	select {
+	case <-checkEntered:
+	case <-time.After(2 * time.Second):
+		t.Fatal("/health request did not enter the blocking check")
+	}
+
+	stopDone := make(chan error, 1)
+	go func() {
+		stopDone <- d.Stop()
+	}()
+
+	require.Eventually(t, func() bool {
+		return !d.Ready()
+	}, 500*time.Millisecond, 10*time.Millisecond, "daemon should become not ready before shutdown completes")
+
+	_, ok := reg.Get("test-app", "serve")
+	assert.True(t, ok, "daemon should remain registered until health shutdown completes")
+
+	select {
+	case err := <-stopDone:
+		t.Fatalf("daemon stopped too early: %v", err)
+	default:
+	}
+
+	close(blockCheck)
+
+	select {
+	case err := <-stopDone:
+		require.NoError(t, err)
+	case <-time.After(2 * time.Second):
+		t.Fatal("daemon stop did not finish after health check unblocked")
+	}
+
+	require.Eventually(t, func() bool {
+		_, ok := reg.Get("test-app", "serve")
+		return !ok
+	}, 500*time.Millisecond, 10*time.Millisecond, "daemon should unregister after health shutdown completes")
+
+	select {
+	case err := <-healthErr:
+		require.NoError(t, err)
+	case <-time.After(2 * time.Second):
+		t.Fatal("/health request did not finish")
+	}
+}
+
+func TestDaemon_DoubleStartFails(t *testing.T) {
 	d := NewDaemon(DaemonOptions{
 		HealthAddr: "127.0.0.1:0",
 	})
@@ -50,7 +210,7 @@ func TestDaemon_AlreadyRunning_Bad(t *testing.T) {
 	assert.Contains(t, err.Error(), "already running")
 }
 
-func TestDaemon_RunUnstarted_Bad(t *testing.T) {
+func TestDaemon_RunWithoutStartFails(t *testing.T) {
 	d := NewDaemon(DaemonOptions{})
 
 	ctx, cancel := context.WithCancel(context.Background())
@@ -61,7 +221,15 @@ func TestDaemon_RunUnstarted_Bad(t *testing.T) {
 	assert.Contains(t, err.Error(), "not started")
 }
 
-func TestDaemon_SetReady_Good(t *testing.T) {
+func TestDaemon_RunNilContextFails(t *testing.T) {
+	d := NewDaemon(DaemonOptions{})
+
+	err := d.Run(nil)
+	require.Error(t, err)
+	assert.ErrorIs(t, err, ErrDaemonContextRequired)
+}
+
+func TestDaemon_SetReady(t *testing.T) {
 	d := NewDaemon(DaemonOptions{
 		HealthAddr: "127.0.0.1:0",
 	})
@@ -75,25 +243,32 @@ func TestDaemon_SetReady_Good(t *testing.T) {
 	resp, _ := http.Get("http://" + addr + "/ready")
 	assert.Equal(t, http.StatusOK, resp.StatusCode)
 	_ = resp.Body.Close()
+	assert.True(t, d.Ready())
 
 	d.SetReady(false)
+	assert.False(t, d.Ready())
 
 	resp, _ = http.Get("http://" + addr + "/ready")
 	assert.Equal(t, http.StatusServiceUnavailable, resp.StatusCode)
 	_ = resp.Body.Close()
 }
 
-func TestDaemon_HealthAddrDisabled_Good(t *testing.T) {
+func TestDaemon_ReadyWithoutHealthServer(t *testing.T) {
+	d := NewDaemon(DaemonOptions{})
+	assert.False(t, d.Ready())
+}
+
+func TestDaemon_NoHealthAddrReturnsEmpty(t *testing.T) {
 	d := NewDaemon(DaemonOptions{})
 	assert.Empty(t, d.HealthAddr())
 }
 
-func TestDaemon_DefaultTimeout_Good(t *testing.T) {
+func TestDaemon_DefaultShutdownTimeout(t *testing.T) {
 	d := NewDaemon(DaemonOptions{})
 	assert.Equal(t, 30*time.Second, d.opts.ShutdownTimeout)
 }
 
-func TestDaemon_RunBlocking_Good(t *testing.T) {
+func TestDaemon_RunBlocksUntilCancelled(t *testing.T) {
 	d := NewDaemon(DaemonOptions{
 		HealthAddr: "127.0.0.1:0",
 	})
@@ -126,7 +301,7 @@ func TestDaemon_RunBlocking_Good(t *testing.T) {
 	}
 }
 
-func TestDaemon_StopIdempotent_Good(t *testing.T) {
+func TestDaemon_StopIdempotent(t *testing.T) {
 	d := NewDaemon(DaemonOptions{})
 
 	// Stop without Start should be a no-op
@@ -134,9 +309,13 @@ func TestDaemon_StopIdempotent_Good(t *testing.T) {
 	assert.NoError(t, err)
 }
 
-func TestDaemon_AutoRegister_Good(t *testing.T) {
+func TestDaemon_AutoRegisters(t *testing.T) {
 	dir := t.TempDir()
-	reg := NewRegistry(core.JoinPath(dir, "daemons"))
+	reg := NewRegistry(filepath.Join(dir, "daemons"))
+	wd, err := os.Getwd()
+	require.NoError(t, err)
+	exe, err := os.Executable()
+	require.NoError(t, err)
 
 	d := NewDaemon(DaemonOptions{
 		HealthAddr: "127.0.0.1:0",
@@ -147,7 +326,7 @@ func TestDaemon_AutoRegister_Good(t *testing.T) {
 		},
 	})
 
-	err := d.Start()
+	err = d.Start()
 	require.NoError(t, err)
 
 	// Should be registered
@@ -155,6 +334,8 @@ func TestDaemon_AutoRegister_Good(t *testing.T) {
 	require.True(t, ok)
 	assert.Equal(t, os.Getpid(), entry.PID)
 	assert.NotEmpty(t, entry.Health)
+	assert.Equal(t, wd, entry.Project)
+	assert.Equal(t, exe, entry.Binary)
 
 	// Stop should unregister
 	err = d.Stop()
@@ -163,3 +344,40 @@ func TestDaemon_AutoRegister_Good(t *testing.T) {
 	_, ok = reg.Get("test-app", "serve")
 	assert.False(t, ok)
 }
+
+func TestDaemon_StartRollsBackOnRegistryFailure(t *testing.T) {
+	dir := t.TempDir()
+
+	pidPath := filepath.Join(dir, "daemon.pid")
+	regDir := filepath.Join(dir, "registry")
+	require.NoError(t, os.MkdirAll(regDir, 0o755))
+	require.NoError(t, os.Chmod(regDir, 0o555))
+
+	d := NewDaemon(DaemonOptions{
+		PIDFile:    pidPath,
+		HealthAddr: "127.0.0.1:0",
+		Registry:   NewRegistry(regDir),
+		RegistryEntry: DaemonEntry{
+			Code:   "broken",
+			Daemon: "start",
+		},
+	})
+
+	err := d.Start()
+	require.Error(t, err)
+
+	_, statErr := os.Stat(pidPath)
+	assert.True(t, os.IsNotExist(statErr))
+
+	addr := d.HealthAddr()
+	require.NotEmpty(t, addr)
+
+	client := &http.Client{Timeout: 250 * time.Millisecond}
+	resp, reqErr := client.Get("http://" + addr + "/health")
+	if resp != nil {
+		_ = resp.Body.Close()
+	}
+	assert.Error(t, reqErr)
+
+	assert.NoError(t, d.Stop())
+}

docs/RFC.md

@@ -1,302 +0,0 @@
-# go-process API Contract — RFC Specification
-
-> `dappco.re/go/core/process` — Managed process execution for the Core ecosystem.
-> This package is the ONLY package that imports `os/exec`. Everything else uses
-> `c.Process()` which delegates to Actions registered by this package.
-
-**Status:** v0.8.0
-**Module:** `dappco.re/go/core/process`
-**Depends on:** core/go v0.8.0
-
----
-
-## 1. Purpose
-
-go-process provides the implementation behind `c.Process()`. Core defines the primitive (Section 17). go-process registers the Action handlers that make it work.
-
-```
-core/go defines:     c.Process().Run(ctx, "git", "log")
-                     → calls c.Action("process.run").Run(ctx, opts)
-
-go-process provides:  c.Action("process.run", s.handleRun)
-                     → actually executes the command via os/exec
-```
-
-Without go-process registered, `c.Process().Run()` returns `Result{OK: false}`. Permission-by-registration.
-
-### Current State (2026-03-30)
-
-The codebase now matches the v0.8.0 target. The bullets below are the historical migration delta that was closed out:
-
-- `service.go` — `NewService(opts) func(*Core) (any, error)` — **old factory signature**. Change to `Register(c *Core) core.Result`
-- `OnStartup() error` / `OnShutdown() error` — **Change** to return `core.Result`
-- `process.SetDefault(svc)` global singleton — **Remove**. Service registers in Core conclave
-- Own ID generation `fmt.Sprintf("proc-%d", ...)` — **Replace** with `core.ID()`
-- Custom `map[string]*ManagedProcess` — **Replace** with `core.Registry[*ManagedProcess]`
-- No named Actions registered — **Add** `process.run/start/kill/list/get` during OnStartup
-
-### File Layout
-
-```
-service.go        — main service (factory, lifecycle, process execution)
-registry.go       — daemon registry (PID files, health, restart)
-daemon.go         — DaemonEntry, managed daemon lifecycle
-health.go         — health check endpoints
-pidfile.go        — PID file management
-buffer.go         — output buffering
-actions.go        — Action payloads and Core action handlers
-global.go         — global Default() singleton — DELETE after migration
-```
-
----
-
-## 2. Registration
-
-```go
-// Register is the WithService factory.
-//
-//   core.New(core.WithService(process.Register))
-func Register(c *core.Core) core.Result {
-    svc := &Service{
-        ServiceRuntime: core.NewServiceRuntime(c, Options{}),
-        managed:        core.NewRegistry[*ManagedProcess](),
-    }
-    return core.Result{Value: svc, OK: true}
-}
-```
-
-### OnStartup — Register Actions
-
-```go
-func (s *Service) OnStartup(ctx context.Context) core.Result {
-    c := s.Core()
-    c.Action("process.run", s.handleRun)
-    c.Action("process.start", s.handleStart)
-    c.Action("process.kill", s.handleKill)
-    c.Action("process.list", s.handleList)
-    c.Action("process.get", s.handleGet)
-    return core.Result{OK: true}
-}
-```
-
-### OnShutdown — Kill Managed Processes
-
-```go
-func (s *Service) OnShutdown(ctx context.Context) core.Result {
-    s.managed.Each(func(id string, p *ManagedProcess) {
-        p.Kill()
-    })
-    return core.Result{OK: true}
-}
-```
-
----
-
-## 3. Action Handlers
-
-### process.run — Synchronous Execution
-
-```go
-func (s *Service) handleRun(ctx context.Context, opts core.Options) core.Result {
-    command := opts.String("command")
-    args, _ := opts.Get("args").Value.([]string)
-    dir := opts.String("dir")
-    env, _ := opts.Get("env").Value.([]string)
-
-    cmd := exec.CommandContext(ctx, command, args...)
-    if dir != "" { cmd.Dir = dir }
-    if len(env) > 0 { cmd.Env = append(os.Environ(), env...) }
-
-    output, err := cmd.CombinedOutput()
-    if err != nil {
-        return core.Result{Value: err, OK: false}
-    }
-    return core.Result{Value: string(output), OK: true}
-}
-```
-
-> Note: go-process is the ONLY package allowed to import `os` and `os/exec`.
-
-### process.start — Detached/Background
-
-```go
-func (s *Service) handleStart(ctx context.Context, opts core.Options) core.Result {
-    command := opts.String("command")
-    args, _ := opts.Get("args").Value.([]string)
-
-    cmd := exec.Command(command, args...)
-    cmd.Dir = opts.String("dir")
-
-    if err := cmd.Start(); err != nil {
-        return core.Result{Value: err, OK: false}
-    }
-
-    id := core.ID()
-    managed := &ManagedProcess{
-        ID: id, PID: cmd.Process.Pid, Command: command,
-        cmd: cmd, done: make(chan struct{}),
-    }
-    s.managed.Set(id, managed)
-
-    go func() {
-        cmd.Wait()
-        close(managed.done)
-        managed.ExitCode = cmd.ProcessState.ExitCode()
-    }()
-
-    return core.Result{Value: id, OK: true}
-}
-```
-
-### process.kill — Terminate by ID or PID
-
-```go
-func (s *Service) handleKill(ctx context.Context, opts core.Options) core.Result {
-    id := opts.String("id")
-    if id != "" {
-        r := s.managed.Get(id)
-        if !r.OK {
-            return core.Result{Value: core.E("process.kill", core.Concat("not found: ", id), nil), OK: false}
-        }
-        r.Value.(*ManagedProcess).Kill()
-        return core.Result{OK: true}
-    }
-
-    pid := opts.Int("pid")
-    if pid > 0 {
-        proc, err := os.FindProcess(pid)
-        if err != nil { return core.Result{Value: err, OK: false} }
-        proc.Signal(syscall.SIGTERM)
-        return core.Result{OK: true}
-    }
-
-    return core.Result{Value: core.E("process.kill", "need id or pid", nil), OK: false}
-}
-```
-
-### process.list / process.get
-
-```go
-func (s *Service) handleList(ctx context.Context, opts core.Options) core.Result {
-    return core.Result{Value: s.managed.Names(), OK: true}
-}
-
-func (s *Service) handleGet(ctx context.Context, opts core.Options) core.Result {
-    id := opts.String("id")
-    r := s.managed.Get(id)
-    if !r.OK { return r }
-    return core.Result{Value: r.Value.(*ManagedProcess).Info(), OK: true}
-}
-```
-
----
-
-## 4. ManagedProcess
-
-```go
-type ManagedProcess struct {
-    ID        string
-    PID       int
-    Command   string
-    ExitCode  int
-    StartedAt time.Time
-    cmd       *exec.Cmd
-    done      chan struct{}
-}
-
-func (p *ManagedProcess) IsRunning() bool {
-    select {
-    case <-p.done: return false
-    default: return true
-    }
-}
-
-func (p *ManagedProcess) Kill() {
-    if p.cmd != nil && p.cmd.Process != nil {
-        p.cmd.Process.Signal(syscall.SIGTERM)
-    }
-}
-
-func (p *ManagedProcess) Done() <-chan struct{} { return p.done }
-
-func (p *ManagedProcess) Info() ProcessInfo {
-    return ProcessInfo{
-        ID: p.ID, PID: p.PID, Command: p.Command,
-        Running: p.IsRunning(), ExitCode: p.ExitCode, StartedAt: p.StartedAt,
-    }
-}
-```
-
----
-
-## 5. Daemon Registry
-
-Higher-level abstraction over `process.start`:
-
-```
-process.start  → low level: start a command, get a handle
-daemon.Start   → high level: PID file, health endpoint, restart policy, signals
-```
-
-Daemon registry uses `core.Registry[*DaemonEntry]`.
-
----
-
-## 6. Error Handling
-
-All errors via `core.E()`. String building via `core.Concat()`.
-
-```go
-return core.Result{Value: core.E("process.run", core.Concat("command failed: ", command), err), OK: false}
-```
-
----
-
-## 7. Test Strategy
-
-AX-7: `TestFile_Function_{Good,Bad,Ugly}`
-
-```
-TestService_Register_Good           — factory returns Result
-TestService_OnStartup_Good          — registers 5 Actions
-TestService_HandleRun_Good          — runs command, returns output
-TestService_HandleRun_Bad           — command not found
-TestService_HandleRun_Ugly          — timeout via context
-TestService_HandleStart_Good        — starts detached, returns ID
-TestService_HandleStart_Bad         — invalid command
-TestService_HandleKill_Good         — kills by ID
-TestService_HandleKill_Bad          — unknown ID
-TestService_HandleList_Good         — returns managed process IDs
-TestService_OnShutdown_Good         — kills all managed processes
-TestService_Ugly_PermissionModel    — no go-process = c.Process().Run() fails
-```
-
----
-
-## 8. Quality Gates
-
-go-process is the ONE exception — it imports `os` and `os/exec` because it IS the process primitive. All other disallowed imports still apply:
-
-```bash
-# Should only find os/exec in service.go, os in service.go
-grep -rn '"os"\|"os/exec"' *.go | grep -v _test.go
-
-# No other disallowed imports
-grep -rn '"io"\|"fmt"\|"errors"\|"log"\|"encoding/json"\|"path/filepath"\|"unsafe"\|"strings"' *.go \
-  | grep -v _test.go
-```
-
----
-
-## Consumer RFCs
-
-| Package | RFC | Role |
-|---------|-----|------|
-| core/go | `core/go/docs/RFC.md` | Primitives — Process primitive (Section 17) |
-| core/agent | `core/agent/docs/RFC.md` | Consumer — `c.Process().RunIn()` for git/build ops |
-
----
-
-## Changelog
-
-- 2026-03-25: v0.8.0 spec — written with full core/go domain context.

docs/architecture.md

@@ -60,28 +60,32 @@ participate in the Core DI container and implements both `Startable` and
 ```go
 type Service struct {
     *core.ServiceRuntime[Options]
-    managed *core.Registry[*ManagedProcess]
+    processes map[string]*Process
+    mu        sync.RWMutex
     bufSize   int
+    idCounter atomic.Uint64
 }
 ```
 
 Key behaviours:
 
-- **OnStartup** — registers the named Core actions `process.run`, `process.start`, `process.kill`, `process.list`, and `process.get`.
+- **OnStartup** — currently a no-op; reserved for future initialisation.
 - **OnShutdown** — iterates all running processes and calls `Kill()` on each,
   ensuring no orphaned child processes when the application exits.
-- Process IDs are generated with `core.ID()` and stored in a Core registry.
+- Process IDs are generated as `proc-N` using an atomic counter, guaranteeing
+  uniqueness without locks.
 
 #### Registration
 
 The service is registered with Core via a factory function:
 
 ```go
-core.New(core.WithService(process.Register))
+process.NewService(process.Options{BufferSize: 2 * 1024 * 1024})
 ```
 
-`Register` returns `core.Result{Value: *Service, OK: true}` — the standard
+`NewService` returns a `func(*core.Core) (any, error)` closure — the standard
-Core `WithService` factory signature used by the v0.8.0 contract.
+Core service factory signature. The `Options` struct is captured by the closure
+and applied when Core instantiates the service.
 
 ### Process
 
@@ -159,12 +163,12 @@ const (
 When `Service.StartWithOptions()` is called:
 
 ```
-1. Generate a unique ID with `core.ID()`
+1. Generate unique ID (atomic counter)
 2. Create context with cancel
 3. Build os/exec.Cmd with dir, env, pipes
 4. Create RingBuffer (unless DisableCapture is set)
 5. cmd.Start()
-6. Store process in the Core registry
+6. Store process in map
 7. Broadcast ActionProcessStarted via Core.ACTION
 8. Spawn 2 goroutines to stream stdout and stderr
    - Each line is written to the RingBuffer
@@ -172,9 +176,8 @@ When `Service.StartWithOptions()` is called:
 9. Spawn 1 goroutine to wait for process exit
    - Waits for output goroutines to finish first
    - Calls cmd.Wait()
-   - Classifies the exit as exited, failed, or killed
+   - Updates process status and exit code
    - Closes the done channel
-   - Broadcasts ActionProcessKilled when the process died from a signal
    - Broadcasts ActionProcessExited
 ```
 
@@ -293,12 +296,12 @@ File naming convention: `{code}-{daemon}.json` (slashes replaced with dashes).
 
 ## exec Sub-Package
 
-The `exec` package (`dappco.re/go/core/process/exec`) provides a fluent
+The `exec` package (`forge.lthn.ai/core/go-process/exec`) provides a fluent
 wrapper around `os/exec` for simple, one-shot commands that do not need Core
 integration:
 
 ```go
-import "dappco.re/go/core/process/exec"
+import "forge.lthn.ai/core/go-process/exec"
 
 // Fluent API
 err := exec.Command(ctx, "go", "build", "./...").

docs/development.md

@@ -101,7 +101,9 @@ go-process/
     pidfile.go              # PID file single-instance lock
     pidfile_test.go         # PID file tests
     process.go              # Process type and methods
+    process_global.go       # Global singleton and convenience API
     process_test.go         # Process tests
+    global_test.go          # Global API tests (concurrency)
     registry.go             # Daemon registry (JSON file store)
     registry_test.go        # Registry tests
     runner.go               # Pipeline runner (sequential, parallel, DAG)
@@ -140,6 +142,8 @@ go-process/
 | `ErrProcessNotFound` | No process with the given ID exists in the service |
 | `ErrProcessNotRunning` | Operation requires a running process (e.g. SendInput, Signal) |
 | `ErrStdinNotAvailable` | Stdin pipe is nil (already closed or never created) |
+| `ErrServiceNotInitialized` | Global convenience function called before `process.Init()` |
+| `ServiceError` | Wraps service-level errors with a message string |
 
 ## Build Configuration
 

docs/index.md

@@ -5,10 +5,10 @@ description: Process management with Core IPC integration for Go applications.
 
 # go-process
 
-`dappco.re/go/core/process` is a process management library that provides
+`forge.lthn.ai/core/go-process` is a process management library that provides
 spawning, monitoring, and controlling external processes with real-time output
 streaming via the Core ACTION (IPC) system. It integrates directly with the
-[Core DI framework](https://dappco.re/go/core) as a first-class service.
+[Core DI framework](https://forge.lthn.ai/core/go) as a first-class service.
 
 ## Features
 
@@ -28,17 +28,22 @@ streaming via the Core ACTION (IPC) system. It integrates directly with the
 ```go
 import (
     "context"
-    "dappco.re/go/core"
+    framework "forge.lthn.ai/core/go/pkg/core"
-    "dappco.re/go/core/process"
+    "forge.lthn.ai/core/go-process"
 )
 
-// Create a Core instance with the process service registered.
+// Create a Core instance with the process service
-c := core.New(core.WithService(process.Register))
+c, err := framework.New(
+    framework.WithName("process", process.NewService(process.Options{})),
+)
+if err != nil {
+    log.Fatal(err)
+}
 
 // Retrieve the typed service
-svc, ok := core.ServiceFor[*process.Service](c, "process")
+svc, err := framework.ServiceFor[*process.Service](c, "process")
-if !ok {
+if err != nil {
-    panic("process service not registered")
+    log.Fatal(err)
 }
 ```
 
@@ -46,19 +51,15 @@ if !ok {
 
 ```go
 // Fire-and-forget (async)
-start := svc.Start(ctx, "go", "test", "./...")
+proc, err := svc.Start(ctx, "go", "test", "./...")
-if !start.OK {
+if err != nil {
-    return start.Value.(error)
+    return err
 }
-proc := start.Value.(*process.Process)
 <-proc.Done()
 fmt.Println(proc.Output())
 
 // Synchronous convenience
-run := svc.Run(ctx, "echo", "hello world")
+output, err := svc.Run(ctx, "echo", "hello world")
-if run.OK {
-    fmt.Println(run.Value.(string))
-}
 ```
 
 ### Listen for Events
@@ -66,7 +67,7 @@ if run.OK {
 Process lifecycle events are broadcast through Core's ACTION system:
 
 ```go
-c.RegisterAction(func(c *core.Core, msg core.Message) core.Result {
+c.RegisterAction(func(c *framework.Core, msg framework.Message) error {
     switch m := msg.(type) {
     case process.ActionProcessStarted:
         fmt.Printf("Started: %s (PID %d)\n", m.Command, m.PID)
@@ -77,24 +78,24 @@ c.RegisterAction(func(c *core.Core, msg core.Message) core.Result {
     case process.ActionProcessKilled:
         fmt.Printf("Killed with %s\n", m.Signal)
     }
-    return core.Result{OK: true}
+    return nil
 })
 ```
 
-### Permission Model
+### Global Convenience API
 
-Core's process primitive delegates to named actions registered by this module.
+For applications that only need a single process service, a global singleton
-Without `process.Register`, `c.Process().Run(...)` fails with `OK: false`.
+is available:
 
 ```go
-c := core.New()
+// Initialise once at startup
-r := c.Process().Run(ctx, "echo", "blocked")
+process.Init(coreInstance)
-fmt.Println(r.OK) // false
 
-c = core.New(core.WithService(process.Register))
+// Then use package-level functions anywhere
-_ = c.ServiceStartup(ctx, nil)
+proc, _ := process.Start(ctx, "ls", "-la")
-r = c.Process().Run(ctx, "echo", "allowed")
+output, _ := process.Run(ctx, "date")
-fmt.Println(r.OK) // true
+procs := process.List()
+running := process.Running()
 ```
 
 ## Package Layout
@@ -108,7 +109,7 @@ fmt.Println(r.OK) // true
 
 | Field | Value |
 |-------|-------|
-| Module path | `dappco.re/go/core/process` |
+| Module path | `forge.lthn.ai/core/go-process` |
 | Go version | 1.26.0 |
 | Licence | EUPL-1.2 |
 
@@ -116,7 +117,7 @@ fmt.Println(r.OK) // true
 
 | Module | Purpose |
 |--------|---------|
-| `dappco.re/go/core` | Core DI framework (`ServiceRuntime`, `Core.ACTION`, lifecycle interfaces) |
+| `forge.lthn.ai/core/go` | Core DI framework (`ServiceRuntime`, `Core.ACTION`, lifecycle interfaces) |
 | `github.com/stretchr/testify` | Test assertions (test-only) |
 
 The package has no other runtime dependencies beyond the Go standard library

docs/plans/2026-03-25-v0.7.0-core-alignment.md

@@ -1,151 +0,0 @@
-# go-process v0.7.0 — Core Alignment
-
-> Written by Cladius with full core/go domain context (2026-03-25).
-> Read core/go docs/RFC.md Section 17 for the full Process primitive spec.
-
-## What Changed in core/go
-
-core/go v0.8.0 added:
-- `c.Process()` — primitive that delegates to `c.Action("process.*")`
-- `c.Action("name")` — named action registry with panic recovery
-- `Startable.OnStartup()` returns `core.Result` (not `error`)
-- `Registry[T]` — universal thread-safe named collection
-- `core.ID()` — unique identifier primitive
-
-go-process needs to align its factory signature and register process Actions.
-
-## Step 1: Fix Factory Signature
-
-Current (`service.go`):
-```go
-func NewService(opts Options) func(*core.Core) (any, error) {
-```
-
-Target:
-```go
-func Register(c *core.Core) core.Result {
-    svc := &Service{
-        ServiceRuntime: core.NewServiceRuntime(c, Options{}),
-        processes:      make(map[string]*ManagedProcess),
-    }
-    return core.Result{Value: svc, OK: true}
-}
-```
-
-This matches `core.WithService(process.Register)` — the standard pattern.
-
-## Step 2: Register Process Actions During OnStartup
-
-```go
-func (s *Service) OnStartup(ctx context.Context) core.Result {
-    c := s.Core()
-
-    // Register named actions — these are what c.Process() calls
-    c.Action("process.run", s.handleRun)
-    c.Action("process.start", s.handleStart)
-    c.Action("process.kill", s.handleKill)
-
-    return core.Result{OK: true}
-}
-```
-
-Note: `OnStartup` now returns `core.Result` not `error`.
-
-## Step 3: Implement Action Handlers
-
-```go
-func (s *Service) handleRun(ctx context.Context, opts core.Options) core.Result {
-    command := opts.String("command")
-    args, _ := opts.Get("args").Value.([]string)
-    dir := opts.String("dir")
-    env, _ := opts.Get("env").Value.([]string)
-
-    // Use existing RunWithOptions internally
-    out, err := s.RunWithOptions(ctx, RunOptions{
-        Command: command,
-        Args:    args,
-        Dir:     dir,
-        Env:     env,
-    })
-    if err != nil {
-        return core.Result{Value: err, OK: false}
-    }
-    return core.Result{Value: out, OK: true}
-}
-
-func (s *Service) handleStart(ctx context.Context, opts core.Options) core.Result {
-    // Detached process — returns handle ID
-    command := opts.String("command")
-    args, _ := opts.Get("args").Value.([]string)
-
-    handle, err := s.Start(ctx, StartOptions{
-        Command: command,
-        Args:    args,
-        Dir:     opts.String("dir"),
-        Detach:  opts.Bool("detach"),
-    })
-    if err != nil {
-        return core.Result{Value: err, OK: false}
-    }
-    return core.Result{Value: handle.ID, OK: true}
-}
-
-func (s *Service) handleKill(ctx context.Context, opts core.Options) core.Result {
-    id := opts.String("id")
-    pid := opts.Int("pid")
-
-    if id != "" {
-        return s.KillByID(id)
-    }
-    return s.KillByPID(pid)
-}
-```
-
-## Step 4: Remove Global Singleton Pattern
-
-Current: `process.SetDefault(svc)` and `process.Default()` global state.
-
-Target: Service registered in Core's conclave. No global state.
-
-The `ensureProcess()` hack in core/agent exists because go-process doesn't register properly. Once this is done, that bridge can be deleted.
-
-## Step 5: Update OnShutdown
-
-```go
-func (s *Service) OnShutdown(ctx context.Context) core.Result {
-    // Kill all managed processes
-    for _, p := range s.processes {
-        p.Kill()
-    }
-    return core.Result{OK: true}
-}
-```
-
-## Step 6: Use core.ID() for Process IDs
-
-Current: `fmt.Sprintf("proc-%d", s.idCounter.Add(1))`
-
-Target: `core.ID()` — consistent format across ecosystem.
-
-## Step 7: AX-7 Tests
-
-All tests renamed to `TestFile_Function_{Good,Bad,Ugly}`:
-- `TestService_Register_Good` — factory returns Result
-- `TestService_HandleRun_Good` — runs command via Action
-- `TestService_HandleRun_Bad` — command not found
-- `TestService_HandleKill_Good` — kills by ID
-- `TestService_OnStartup_Good` — registers Actions
-- `TestService_OnShutdown_Good` — kills all processes
-
-## What This Unlocks
-
-Once go-process v0.7.0 ships:
-- `core.New(core.WithService(process.Register))` — standard registration
-- `c.Process().Run(ctx, "git", "log")` — works end-to-end
-- core/agent deletes `proc.go`, `ensureProcess()`, `ProcessRegister`
-- Tests can mock process execution by registering a fake handler
-
-## Dependencies
-
-- core/go v0.8.0 (already done — Action system, Process primitive, Result lifecycle)
-- No other deps change

errors.go

@@ -0,0 +1,12 @@
+package process
+
+import coreerr "dappco.re/go/core/log"
+
+// ServiceError wraps a service-level failure with a message string.
+//
+// Example:
+//
+//	return process.ServiceError("context is required", process.ErrContextRequired)
+func ServiceError(message string, err error) error {
+	return coreerr.E("ServiceError", message, err)
+}

errors_test.go

@@ -0,0 +1,15 @@
+package process
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestServiceError(t *testing.T) {
+	err := ServiceError("service failed", ErrContextRequired)
+	require.Error(t, err)
+	assert.Contains(t, err.Error(), "service failed")
+	assert.ErrorIs(t, err, ErrContextRequired)
+}

exec/doc.go

@@ -1,6 +0,0 @@
-// Package exec provides a small command wrapper around `os/exec` with
-// structured logging hooks.
-//
-//	ctx := context.Background()
-//	out, err := exec.Command(ctx, "echo", "hello").Output()
-package exec

exec/exec.go

@@ -3,27 +3,34 @@ package exec
 import (
 	"bytes"
 	"context"
-	"io"
+	"fmt"
 	"os"
 	"os/exec"
+	"strings"
 
-	"dappco.re/go/core"
+	coreerr "dappco.re/go/core/log"
+	goio "io"
 )
 
+// ErrCommandContextRequired is returned when a command is created without a context.
+var ErrCommandContextRequired = coreerr.E("", "exec: command context is required", nil)
+
 // Options configures command execution.
-//
-//	opts := exec.Options{Dir: "/workspace", Env: []string{"CI=1"}}
 type Options struct {
 	Dir    string
 	Env    []string
-	Stdin  io.Reader
+	Stdin  goio.Reader
-	Stdout io.Writer
+	Stdout goio.Writer
-	Stderr io.Writer
+	Stderr goio.Writer
+	// Background runs the command asynchronously and returns from Run immediately.
+	Background bool
 }
 
-// Command wraps `os/exec.Command` with logging and context.
+// Command wraps os/exec.Command with logging and context.
 //
-//	cmd := exec.Command(ctx, "git", "status").WithDir("/workspace")
+// Example:
+//
+//	cmd := exec.Command(ctx, "go", "test", "./...")
 func Command(ctx context.Context, name string, args ...string) *Cmd {
 	return &Cmd{
 		name: name,
@@ -43,31 +50,51 @@ type Cmd struct {
 }
 
 // WithDir sets the working directory.
+//
+// Example:
+//
+//	cmd.WithDir("/tmp")
 func (c *Cmd) WithDir(dir string) *Cmd {
 	c.opts.Dir = dir
 	return c
 }
 
 // WithEnv sets the environment variables.
+//
+// Example:
+//
+//	cmd.WithEnv([]string{"CGO_ENABLED=0"})
 func (c *Cmd) WithEnv(env []string) *Cmd {
 	c.opts.Env = env
 	return c
 }
 
 // WithStdin sets stdin.
-func (c *Cmd) WithStdin(r io.Reader) *Cmd {
+//
+// Example:
+//
+//	cmd.WithStdin(strings.NewReader("input"))
+func (c *Cmd) WithStdin(r goio.Reader) *Cmd {
 	c.opts.Stdin = r
 	return c
 }
 
 // WithStdout sets stdout.
-func (c *Cmd) WithStdout(w io.Writer) *Cmd {
+//
+// Example:
+//
+//	cmd.WithStdout(os.Stdout)
+func (c *Cmd) WithStdout(w goio.Writer) *Cmd {
 	c.opts.Stdout = w
 	return c
 }
 
 // WithStderr sets stderr.
-func (c *Cmd) WithStderr(w io.Writer) *Cmd {
+//
+// Example:
+//
+//	cmd.WithStderr(os.Stderr)
+func (c *Cmd) WithStderr(w goio.Writer) *Cmd {
 	c.opts.Stderr = w
 	return c
 }
@@ -79,14 +106,56 @@ func (c *Cmd) WithLogger(l Logger) *Cmd {
 	return c
 }
 
+// WithBackground configures whether Run should wait for the command to finish.
+func (c *Cmd) WithBackground(background bool) *Cmd {
+	c.opts.Background = background
+	return c
+}
+
+// Start launches the command.
+//
+// Example:
+//
+//	if err := cmd.Start(); err != nil { return err }
+func (c *Cmd) Start() error {
+	if err := c.prepare(); err != nil {
+		return err
+	}
+	c.logDebug("executing command")
+
+	if err := c.cmd.Start(); err != nil {
+		wrapped := wrapError("Cmd.Start", err, c.name, c.args)
+		c.logError("command failed", wrapped)
+		return wrapped
+	}
+
+	if c.opts.Background {
+		go func(cmd *exec.Cmd) {
+			_ = cmd.Wait()
+		}(c.cmd)
+	}
+
+	return nil
+}
+
 // Run executes the command and waits for it to finish.
 // It automatically logs the command execution at debug level.
+//
+// Example:
+//
+//	if err := cmd.Run(); err != nil { return err }
 func (c *Cmd) Run() error {
-	c.prepare()
+	if c.opts.Background {
+		return c.Start()
+	}
+
+	if err := c.prepare(); err != nil {
+		return err
+	}
 	c.logDebug("executing command")
 
 	if err := c.cmd.Run(); err != nil {
-		wrapped := wrapError("exec.cmd.run", err, c.name, c.args)
+		wrapped := wrapError("Cmd.Run", err, c.name, c.args)
 		c.logError("command failed", wrapped)
 		return wrapped
 	}
@@ -94,13 +163,23 @@ func (c *Cmd) Run() error {
 }
 
 // Output runs the command and returns its standard output.
+//
+// Example:
+//
+//	out, err := cmd.Output()
 func (c *Cmd) Output() ([]byte, error) {
-	c.prepare()
+	if c.opts.Background {
+		return nil, coreerr.E("Cmd.Output", "background execution is incompatible with Output", nil)
+	}
+
+	if err := c.prepare(); err != nil {
+		return nil, err
+	}
 	c.logDebug("executing command")
 
 	out, err := c.cmd.Output()
 	if err != nil {
-		wrapped := wrapError("exec.cmd.output", err, c.name, c.args)
+		wrapped := wrapError("Cmd.Output", err, c.name, c.args)
 		c.logError("command failed", wrapped)
 		return nil, wrapped
 	}
@@ -108,26 +187,35 @@ func (c *Cmd) Output() ([]byte, error) {
 }
 
 // CombinedOutput runs the command and returns its combined standard output and standard error.
+//
+// Example:
+//
+//	out, err := cmd.CombinedOutput()
 func (c *Cmd) CombinedOutput() ([]byte, error) {
-	c.prepare()
+	if c.opts.Background {
+		return nil, coreerr.E("Cmd.CombinedOutput", "background execution is incompatible with CombinedOutput", nil)
+	}
+
+	if err := c.prepare(); err != nil {
+		return nil, err
+	}
 	c.logDebug("executing command")
 
 	out, err := c.cmd.CombinedOutput()
 	if err != nil {
-		wrapped := wrapError("exec.cmd.combined_output", err, c.name, c.args)
+		wrapped := wrapError("Cmd.CombinedOutput", err, c.name, c.args)
 		c.logError("command failed", wrapped)
 		return out, wrapped
 	}
 	return out, nil
 }
 
-func (c *Cmd) prepare() {
+func (c *Cmd) prepare() error {
-	ctx := c.ctx
+	if c.ctx == nil {
-	if ctx == nil {
+		return coreerr.E("Cmd.prepare", "exec: command context is required", ErrCommandContextRequired)
-		ctx = context.Background()
 	}
 
-	c.cmd = exec.CommandContext(ctx, c.name, c.args...)
+	c.cmd = exec.CommandContext(c.ctx, c.name, c.args...)
 
 	c.cmd.Dir = c.opts.Dir
 	if len(c.opts.Env) > 0 {
@@ -137,27 +225,31 @@ func (c *Cmd) prepare() {
 	c.cmd.Stdin = c.opts.Stdin
 	c.cmd.Stdout = c.opts.Stdout
 	c.cmd.Stderr = c.opts.Stderr
+	return nil
 }
 
 // RunQuiet executes the command suppressing stdout unless there is an error.
 // Useful for internal commands.
 //
-//	_ = exec.RunQuiet(ctx, "go", "test", "./...")
+// Example:
+//
+//	err := exec.RunQuiet(ctx, "go", "vet", "./...")
 func RunQuiet(ctx context.Context, name string, args ...string) error {
 	var stderr bytes.Buffer
 	cmd := Command(ctx, name, args...).WithStderr(&stderr)
 	if err := cmd.Run(); err != nil {
-		return core.E("exec.run_quiet", core.Trim(stderr.String()), err)
+		// Include stderr in error message
+		return coreerr.E("RunQuiet", strings.TrimSpace(stderr.String()), err)
 	}
 	return nil
 }
 
 func wrapError(caller string, err error, name string, args []string) error {
-	cmdStr := commandString(name, args)
+	cmdStr := name + " " + strings.Join(args, " ")
 	if exitErr, ok := err.(*exec.ExitError); ok {
-		return core.E(caller, core.Sprintf("command %q failed with exit code %d", cmdStr, exitErr.ExitCode()), err)
+		return coreerr.E(caller, fmt.Sprintf("command %q failed with exit code %d", cmdStr, exitErr.ExitCode()), err)
 	}
-	return core.E(caller, core.Sprintf("failed to execute %q", cmdStr), err)
+	return coreerr.E(caller, fmt.Sprintf("failed to execute %q", cmdStr), err)
 }
 
 func (c *Cmd) getLogger() Logger {
@@ -168,17 +260,9 @@ func (c *Cmd) getLogger() Logger {
 }
 
 func (c *Cmd) logDebug(msg string) {
-	c.getLogger().Debug(msg, "cmd", c.name, "args", core.Join(" ", c.args...))
+	c.getLogger().Debug(msg, "cmd", c.name, "args", strings.Join(c.args, " "))
 }
 
 func (c *Cmd) logError(msg string, err error) {
-	c.getLogger().Error(msg, "cmd", c.name, "args", core.Join(" ", c.args...), "err", err)
+	c.getLogger().Error(msg, "cmd", c.name, "args", strings.Join(c.args, " "), "err", err)
-}
-
-func commandString(name string, args []string) string {
-	if len(args) == 0 {
-		return name
-	}
-	parts := append([]string{name}, args...)
-	return core.Join(" ", parts...)
 }

exec/exec_test.go

@@ -2,10 +2,17 @@ package exec_test
 
 import (
 	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
 	"testing"
+	"time"
 
-	"dappco.re/go/core"
 	"dappco.re/go/core/process/exec"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 // mockLogger captures log calls for testing
@@ -27,7 +34,7 @@ func (m *mockLogger) Error(msg string, keyvals ...any) {
 	m.errorCalls = append(m.errorCalls, logCall{msg, keyvals})
 }
 
-func TestCommand_Run_Good(t *testing.T) {
+func TestCommand_Run_Good_LogsDebug(t *testing.T) {
 	logger := &mockLogger{}
 	ctx := context.Background()
 
@@ -49,7 +56,7 @@ func TestCommand_Run_Good(t *testing.T) {
 	}
 }
 
-func TestCommand_Run_Bad(t *testing.T) {
+func TestCommand_Run_Bad_LogsError(t *testing.T) {
 	logger := &mockLogger{}
 	ctx := context.Background()
 
@@ -71,14 +78,6 @@ func TestCommand_Run_Bad(t *testing.T) {
 	}
 }
 
-func TestCommand_Run_WithNilContext_Good(t *testing.T) {
-	var ctx context.Context
-
-	if err := exec.Command(ctx, "echo", "hello").Run(); err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-}
-
 func TestCommand_Output_Good(t *testing.T) {
 	logger := &mockLogger{}
 	ctx := context.Background()
@@ -89,7 +88,7 @@ func TestCommand_Output_Good(t *testing.T) {
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
-	if core.Trim(string(out)) != "test" {
+	if strings.TrimSpace(string(out)) != "test" {
 		t.Errorf("expected 'test', got %q", string(out))
 	}
 	if len(logger.debugCalls) != 1 {
@@ -107,7 +106,7 @@ func TestCommand_CombinedOutput_Good(t *testing.T) {
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
-	if core.Trim(string(out)) != "combined" {
+	if strings.TrimSpace(string(out)) != "combined" {
 		t.Errorf("expected 'combined', got %q", string(out))
 	}
 	if len(logger.debugCalls) != 1 {
@@ -115,14 +114,14 @@ func TestCommand_CombinedOutput_Good(t *testing.T) {
 	}
 }
 
-func TestNopLogger_Methods_Good(t *testing.T) {
+func TestNopLogger(t *testing.T) {
 	// Verify NopLogger doesn't panic
 	var nop exec.NopLogger
 	nop.Debug("msg", "key", "val")
 	nop.Error("msg", "key", "val")
 }
 
-func TestLogger_SetDefault_Good(t *testing.T) {
+func TestSetDefaultLogger(t *testing.T) {
 	original := exec.DefaultLogger()
 	defer exec.SetDefaultLogger(original)
 
@@ -140,7 +139,30 @@ func TestLogger_SetDefault_Good(t *testing.T) {
 	}
 }
 
-func TestCommand_UsesDefaultLogger_Good(t *testing.T) {
+func TestDefaultLogger_IsConcurrentSafe(t *testing.T) {
+	original := exec.DefaultLogger()
+	defer exec.SetDefaultLogger(original)
+
+	logger := &mockLogger{}
+
+	var wg sync.WaitGroup
+	for i := 0; i < 32; i++ {
+		wg.Add(2)
+		go func() {
+			defer wg.Done()
+			exec.SetDefaultLogger(logger)
+		}()
+		go func() {
+			defer wg.Done()
+			_ = exec.DefaultLogger()
+		}()
+	}
+	wg.Wait()
+
+	assert.NotNil(t, exec.DefaultLogger())
+}
+
+func TestCommand_UsesDefaultLogger(t *testing.T) {
 	original := exec.DefaultLogger()
 	defer exec.SetDefaultLogger(original)
 
@@ -155,7 +177,7 @@ func TestCommand_UsesDefaultLogger_Good(t *testing.T) {
 	}
 }
 
-func TestCommand_WithDir_Good(t *testing.T) {
+func TestCommand_WithDir(t *testing.T) {
 	ctx := context.Background()
 	out, err := exec.Command(ctx, "pwd").
 		WithDir("/tmp").
@@ -164,13 +186,13 @@ func TestCommand_WithDir_Good(t *testing.T) {
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
-	trimmed := core.Trim(string(out))
+	trimmed := strings.TrimSpace(string(out))
 	if trimmed != "/tmp" && trimmed != "/private/tmp" {
 		t.Errorf("expected /tmp or /private/tmp, got %q", trimmed)
 	}
 }
 
-func TestCommand_WithEnv_Good(t *testing.T) {
+func TestCommand_WithEnv(t *testing.T) {
 	ctx := context.Background()
 	out, err := exec.Command(ctx, "sh", "-c", "echo $TEST_EXEC_VAR").
 		WithEnv([]string{"TEST_EXEC_VAR=exec_val"}).
@@ -179,32 +201,100 @@ func TestCommand_WithEnv_Good(t *testing.T) {
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
-	if core.Trim(string(out)) != "exec_val" {
+	if strings.TrimSpace(string(out)) != "exec_val" {
 		t.Errorf("expected 'exec_val', got %q", string(out))
 	}
 }
 
-func TestCommand_WithStdinStdoutStderr_Good(t *testing.T) {
+func TestCommand_WithStdinStdoutStderr(t *testing.T) {
 	ctx := context.Background()
-	input := core.NewReader("piped input\n")
+	input := strings.NewReader("piped input\n")
-	stdout := core.NewBuilder()
+	var stdout, stderr strings.Builder
-	stderr := core.NewBuilder()
 
 	err := exec.Command(ctx, "cat").
 		WithStdin(input).
-		WithStdout(stdout).
+		WithStdout(&stdout).
-		WithStderr(stderr).
+		WithStderr(&stderr).
 		WithLogger(&mockLogger{}).
 		Run()
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
-	if core.Trim(stdout.String()) != "piped input" {
+	if strings.TrimSpace(stdout.String()) != "piped input" {
 		t.Errorf("expected 'piped input', got %q", stdout.String())
 	}
 }
 
-func TestRunQuiet_Command_Good(t *testing.T) {
+func TestCommand_Run_Background(t *testing.T) {
+	logger := &mockLogger{}
+	ctx := context.Background()
+	dir := t.TempDir()
+	marker := filepath.Join(dir, "marker.txt")
+
+	start := time.Now()
+	err := exec.Command(ctx, "sh", "-c", fmt.Sprintf("sleep 0.2; printf done > %q", marker)).
+		WithBackground(true).
+		WithLogger(logger).
+		Run()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if elapsed := time.Since(start); elapsed > 100*time.Millisecond {
+		t.Fatalf("background run took too long: %s", elapsed)
+	}
+
+	deadline := time.Now().Add(2 * time.Second)
+	for {
+		data, readErr := os.ReadFile(marker)
+		if readErr == nil && strings.TrimSpace(string(data)) == "done" {
+			break
+		}
+		if time.Now().After(deadline) {
+			t.Fatalf("background command did not create marker file")
+		}
+		time.Sleep(20 * time.Millisecond)
+	}
+}
+
+func TestCommand_NilContextRejected(t *testing.T) {
+	t.Run("start", func(t *testing.T) {
+		err := exec.Command(nil, "echo", "test").Start()
+		require.Error(t, err)
+		assert.ErrorIs(t, err, exec.ErrCommandContextRequired)
+	})
+
+	t.Run("run", func(t *testing.T) {
+		err := exec.Command(nil, "echo", "test").Run()
+		require.Error(t, err)
+		assert.ErrorIs(t, err, exec.ErrCommandContextRequired)
+	})
+
+	t.Run("output", func(t *testing.T) {
+		_, err := exec.Command(nil, "echo", "test").Output()
+		require.Error(t, err)
+		assert.ErrorIs(t, err, exec.ErrCommandContextRequired)
+	})
+
+	t.Run("combined output", func(t *testing.T) {
+		_, err := exec.Command(nil, "echo", "test").CombinedOutput()
+		require.Error(t, err)
+		assert.ErrorIs(t, err, exec.ErrCommandContextRequired)
+	})
+}
+
+func TestCommand_Output_BackgroundRejected(t *testing.T) {
+	ctx := context.Background()
+
+	_, err := exec.Command(ctx, "echo", "test").
+		WithBackground(true).
+		Output()
+	if err == nil {
+		t.Fatal("expected error")
+	}
+}
+
+func TestRunQuiet_Good(t *testing.T) {
 	ctx := context.Background()
 	err := exec.RunQuiet(ctx, "echo", "quiet")
 	if err != nil {
@@ -212,7 +302,7 @@ func TestRunQuiet_Command_Good(t *testing.T) {
 	}
 }
 
-func TestRunQuiet_Command_Bad(t *testing.T) {
+func TestRunQuiet_Bad(t *testing.T) {
 	ctx := context.Background()
 	err := exec.RunQuiet(ctx, "sh", "-c", "echo fail >&2; exit 1")
 	if err == nil {

exec/logger.go

@@ -1,19 +1,23 @@
 package exec
 
+import "sync"
+
 // Logger interface for command execution logging.
 // Compatible with pkg/log.Logger and other structured loggers.
-//
-//	exec.SetDefaultLogger(myLogger)
 type Logger interface {
 	// Debug logs a debug-level message with optional key-value pairs.
+	//
+	// Example:
+	//   logger.Debug("starting", "cmd", "go")
 	Debug(msg string, keyvals ...any)
 	// Error logs an error-level message with optional key-value pairs.
+	//
+	// Example:
+	//   logger.Error("failed", "cmd", "go", "err", err)
 	Error(msg string, keyvals ...any)
 }
 
 // NopLogger is a no-op logger that discards all messages.
-//
-//	var logger exec.NopLogger
 type NopLogger struct{}
 
 // Debug discards the message (no-op implementation).
@@ -22,13 +26,23 @@ func (NopLogger) Debug(string, ...any) {}
 // Error discards the message (no-op implementation).
 func (NopLogger) Error(string, ...any) {}
 
-var defaultLogger Logger = NopLogger{}
+var _ Logger = NopLogger{}
+
+var (
+	defaultLoggerMu sync.RWMutex
+	defaultLogger   Logger = NopLogger{}
+)
 
 // SetDefaultLogger sets the package-level default logger.
 // Commands without an explicit logger will use this.
 //
-//	exec.SetDefaultLogger(myLogger)
+// Example:
+//
+//	exec.SetDefaultLogger(logger)
 func SetDefaultLogger(l Logger) {
+	defaultLoggerMu.Lock()
+	defer defaultLoggerMu.Unlock()
+
 	if l == nil {
 		l = NopLogger{}
 	}
@@ -37,7 +51,12 @@ func SetDefaultLogger(l Logger) {
 
 // DefaultLogger returns the current default logger.
 //
+// Example:
+//
 //	logger := exec.DefaultLogger()
 func DefaultLogger() Logger {
+	defaultLoggerMu.RLock()
+	defer defaultLoggerMu.RUnlock()
+
 	return defaultLogger
 }

global_test.go

@@ -0,0 +1,456 @@
+package process
+
+import (
+	"context"
+	"os/exec"
+	"sync"
+	"syscall"
+	"testing"
+	"time"
+
+	framework "dappco.re/go/core"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGlobal_DefaultNotInitialized(t *testing.T) {
+	// Reset global state for this test
+	old := defaultService.Swap(nil)
+	defer func() {
+		if old != nil {
+			defaultService.Store(old)
+		}
+	}()
+
+	assert.Nil(t, Default())
+
+	_, err := Start(context.Background(), "echo", "test")
+	assert.ErrorIs(t, err, ErrServiceNotInitialized)
+
+	_, err = Run(context.Background(), "echo", "test")
+	assert.ErrorIs(t, err, ErrServiceNotInitialized)
+
+	_, err = Get("proc-1")
+	assert.ErrorIs(t, err, ErrServiceNotInitialized)
+
+	_, err = Output("proc-1")
+	assert.ErrorIs(t, err, ErrServiceNotInitialized)
+
+	err = Input("proc-1", "test")
+	assert.ErrorIs(t, err, ErrServiceNotInitialized)
+
+	err = CloseStdin("proc-1")
+	assert.ErrorIs(t, err, ErrServiceNotInitialized)
+
+	assert.Nil(t, List())
+	assert.Nil(t, Running())
+
+	err = Remove("proc-1")
+	assert.ErrorIs(t, err, ErrServiceNotInitialized)
+
+	// Clear is a no-op without a default service.
+	Clear()
+
+	err = Kill("proc-1")
+	assert.ErrorIs(t, err, ErrServiceNotInitialized)
+
+	err = KillPID(1234)
+	assert.ErrorIs(t, err, ErrServiceNotInitialized)
+
+	_, err = StartWithOptions(context.Background(), RunOptions{Command: "echo"})
+	assert.ErrorIs(t, err, ErrServiceNotInitialized)
+
+	_, err = RunWithOptions(context.Background(), RunOptions{Command: "echo"})
+	assert.ErrorIs(t, err, ErrServiceNotInitialized)
+}
+
+func newGlobalTestService(t *testing.T) *Service {
+	t.Helper()
+	c := framework.New()
+	factory := NewService(Options{})
+	raw, err := factory(c)
+	require.NoError(t, err)
+	return raw.(*Service)
+}
+
+func TestGlobal_SetDefault(t *testing.T) {
+	t.Run("sets and retrieves service", func(t *testing.T) {
+		old := defaultService.Swap(nil)
+		defer func() {
+			if old != nil {
+				defaultService.Store(old)
+			}
+		}()
+
+		svc := newGlobalTestService(t)
+
+		err := SetDefault(svc)
+		require.NoError(t, err)
+		assert.Equal(t, svc, Default())
+	})
+
+	t.Run("errors on nil", func(t *testing.T) {
+		err := SetDefault(nil)
+		assert.Error(t, err)
+	})
+}
+
+func TestGlobal_Register(t *testing.T) {
+	c := framework.New()
+
+	result := Register(c)
+	require.True(t, result.OK)
+
+	svc, ok := result.Value.(*Service)
+	require.True(t, ok)
+	require.NotNil(t, svc)
+	assert.NotNil(t, svc.ServiceRuntime)
+	assert.Equal(t, DefaultBufferSize, svc.bufSize)
+}
+
+func TestGlobal_ConcurrentDefault(t *testing.T) {
+	old := defaultService.Swap(nil)
+	defer func() {
+		if old != nil {
+			defaultService.Store(old)
+		}
+	}()
+
+	svc := newGlobalTestService(t)
+
+	err := SetDefault(svc)
+	require.NoError(t, err)
+
+	var wg sync.WaitGroup
+	for i := 0; i < 100; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			s := Default()
+			assert.NotNil(t, s)
+			assert.Equal(t, svc, s)
+		}()
+	}
+	wg.Wait()
+}
+
+func TestGlobal_ConcurrentSetDefault(t *testing.T) {
+	old := defaultService.Swap(nil)
+	defer func() {
+		if old != nil {
+			defaultService.Store(old)
+		}
+	}()
+
+	var services []*Service
+	for i := 0; i < 10; i++ {
+		svc := newGlobalTestService(t)
+		services = append(services, svc)
+	}
+
+	var wg sync.WaitGroup
+	for _, svc := range services {
+		wg.Add(1)
+		go func(s *Service) {
+			defer wg.Done()
+			_ = SetDefault(s)
+		}(svc)
+	}
+	wg.Wait()
+
+	final := Default()
+	assert.NotNil(t, final)
+
+	found := false
+	for _, svc := range services {
+		if svc == final {
+			found = true
+			break
+		}
+	}
+	assert.True(t, found, "Default should be one of the set services")
+}
+
+func TestGlobal_ConcurrentOperations(t *testing.T) {
+	old := defaultService.Swap(nil)
+	defer func() {
+		if old != nil {
+			defaultService.Store(old)
+		}
+	}()
+
+	svc := newGlobalTestService(t)
+
+	err := SetDefault(svc)
+	require.NoError(t, err)
+
+	var wg sync.WaitGroup
+	var processes []*Process
+	var procMu sync.Mutex
+
+	for i := 0; i < 20; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			proc, err := Start(context.Background(), "echo", "concurrent")
+			if err == nil {
+				procMu.Lock()
+				processes = append(processes, proc)
+				procMu.Unlock()
+			}
+		}()
+	}
+
+	for i := 0; i < 10; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			_ = List()
+			_ = Running()
+		}()
+	}
+
+	wg.Wait()
+
+	procMu.Lock()
+	for _, p := range processes {
+		<-p.Done()
+	}
+	procMu.Unlock()
+
+	assert.Len(t, processes, 20)
+
+	var wg2 sync.WaitGroup
+	for _, p := range processes {
+		wg2.Add(1)
+		go func(id string) {
+			defer wg2.Done()
+			got, err := Get(id)
+			assert.NoError(t, err)
+			assert.NotNil(t, got)
+		}(p.ID)
+	}
+	wg2.Wait()
+}
+
+func TestGlobal_StartWithOptions(t *testing.T) {
+	svc, _ := newTestService(t)
+
+	old := defaultService.Swap(svc)
+	defer func() {
+		if old != nil {
+			defaultService.Store(old)
+		}
+	}()
+
+	proc, err := StartWithOptions(context.Background(), RunOptions{
+		Command: "echo",
+		Args:    []string{"with", "options"},
+	})
+	require.NoError(t, err)
+
+	<-proc.Done()
+
+	assert.Equal(t, 0, proc.ExitCode)
+	assert.Contains(t, proc.Output(), "with options")
+}
+
+func TestGlobal_RunWithOptions(t *testing.T) {
+	svc, _ := newTestService(t)
+
+	old := defaultService.Swap(svc)
+	defer func() {
+		if old != nil {
+			defaultService.Store(old)
+		}
+	}()
+
+	output, err := RunWithOptions(context.Background(), RunOptions{
+		Command: "echo",
+		Args:    []string{"run", "options"},
+	})
+	require.NoError(t, err)
+	assert.Contains(t, output, "run options")
+}
+
+func TestGlobal_Output(t *testing.T) {
+	svc, _ := newTestService(t)
+
+	old := defaultService.Swap(svc)
+	defer func() {
+		if old != nil {
+			defaultService.Store(old)
+		}
+	}()
+
+	proc, err := Start(context.Background(), "echo", "global-output")
+	require.NoError(t, err)
+	<-proc.Done()
+
+	output, err := Output(proc.ID)
+	require.NoError(t, err)
+	assert.Contains(t, output, "global-output")
+}
+
+func TestGlobal_InputAndCloseStdin(t *testing.T) {
+	svc, _ := newTestService(t)
+
+	old := defaultService.Swap(svc)
+	defer func() {
+		if old != nil {
+			defaultService.Store(old)
+		}
+	}()
+
+	proc, err := Start(context.Background(), "cat")
+	require.NoError(t, err)
+
+	err = Input(proc.ID, "global-input\n")
+	require.NoError(t, err)
+
+	err = CloseStdin(proc.ID)
+	require.NoError(t, err)
+
+	<-proc.Done()
+
+	assert.Contains(t, proc.Output(), "global-input")
+}
+
+func TestGlobal_Wait(t *testing.T) {
+	svc, _ := newTestService(t)
+
+	old := defaultService.Swap(svc)
+	defer func() {
+		if old != nil {
+			defaultService.Store(old)
+		}
+	}()
+
+	proc, err := Start(context.Background(), "echo", "global-wait")
+	require.NoError(t, err)
+
+	info, err := Wait(proc.ID)
+	require.NoError(t, err)
+	assert.Equal(t, proc.ID, info.ID)
+	assert.Equal(t, StatusExited, info.Status)
+	assert.Equal(t, 0, info.ExitCode)
+}
+
+func TestGlobal_Signal(t *testing.T) {
+	svc, _ := newTestService(t)
+
+	old := defaultService.Swap(svc)
+	defer func() {
+		if old != nil {
+			defaultService.Store(old)
+		}
+	}()
+
+	proc, err := Start(context.Background(), "sleep", "60")
+	require.NoError(t, err)
+
+	err = Signal(proc.ID, syscall.SIGTERM)
+	require.NoError(t, err)
+
+	select {
+	case <-proc.Done():
+	case <-time.After(2 * time.Second):
+		t.Fatal("process should have been signalled through the global helper")
+	}
+}
+
+func TestGlobal_SignalPID(t *testing.T) {
+	svc, _ := newTestService(t)
+
+	old := defaultService.Swap(svc)
+	defer func() {
+		if old != nil {
+			defaultService.Store(old)
+		}
+	}()
+
+	cmd := exec.Command("sleep", "60")
+	require.NoError(t, cmd.Start())
+
+	waitCh := make(chan error, 1)
+	go func() {
+		waitCh <- cmd.Wait()
+	}()
+
+	t.Cleanup(func() {
+		if cmd.ProcessState == nil && cmd.Process != nil {
+			_ = cmd.Process.Kill()
+		}
+		select {
+		case <-waitCh:
+		case <-time.After(2 * time.Second):
+		}
+	})
+
+	err := SignalPID(cmd.Process.Pid, syscall.SIGTERM)
+	require.NoError(t, err)
+
+	select {
+	case err := <-waitCh:
+		require.Error(t, err)
+	case <-time.After(2 * time.Second):
+		t.Fatal("unmanaged process should have been signalled through the global helper")
+	}
+}
+
+func TestGlobal_Running(t *testing.T) {
+	svc, _ := newTestService(t)
+
+	old := defaultService.Swap(svc)
+	defer func() {
+		if old != nil {
+			defaultService.Store(old)
+		}
+	}()
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	proc, err := Start(ctx, "sleep", "60")
+	require.NoError(t, err)
+
+	running := Running()
+	assert.Len(t, running, 1)
+	assert.Equal(t, proc.ID, running[0].ID)
+
+	cancel()
+	<-proc.Done()
+
+	running = Running()
+	assert.Len(t, running, 0)
+}
+
+func TestGlobal_RemoveAndClear(t *testing.T) {
+	svc, _ := newTestService(t)
+
+	old := defaultService.Swap(svc)
+	defer func() {
+		if old != nil {
+			defaultService.Store(old)
+		}
+	}()
+
+	proc, err := Start(context.Background(), "echo", "remove-me")
+	require.NoError(t, err)
+	<-proc.Done()
+
+	err = Remove(proc.ID)
+	require.NoError(t, err)
+
+	_, err = Get(proc.ID)
+	require.ErrorIs(t, err, ErrProcessNotFound)
+
+	proc2, err := Start(context.Background(), "echo", "clear-me")
+	require.NoError(t, err)
+	<-proc2.Done()
+
+	Clear()
+
+	_, err = Get(proc2.ID)
+	require.ErrorIs(t, err, ErrProcessNotFound)
+}

go.mod

@@ -3,18 +3,18 @@ module dappco.re/go/core/process
 go 1.26.0
 
 require (
-	dappco.re/go/core v0.8.0-alpha.1
+	dappco.re/go/core v0.5.0
+	dappco.re/go/core/api v0.2.0
 	dappco.re/go/core/io v0.2.0
+	dappco.re/go/core/log v0.1.0
 	dappco.re/go/core/ws v0.3.0
-	dappco.re/go/core/api v0.1.5
 	github.com/gin-gonic/gin v1.12.0
+	github.com/gorilla/websocket v1.5.3
 	github.com/stretchr/testify v1.11.1
 )
 
 require (
-	dappco.re/go/core/log v0.1.0 // indirect
+	forge.lthn.ai/core/go-log v0.0.4 // indirect
-	dappco.re/go/core/io v0.1.5 // indirect
-	dappco.re/go/core/log v0.0.4 // indirect
 	github.com/99designs/gqlgen v0.17.88 // indirect
 	github.com/KyleBanks/depth v1.2.1 // indirect
 	github.com/agnivade/levenshtein v1.2.1 // indirect
@@ -67,7 +67,6 @@ require (
 	github.com/gorilla/context v1.1.2 // indirect
 	github.com/gorilla/securecookie v1.1.2 // indirect
 	github.com/gorilla/sessions v1.4.0 // indirect
-	github.com/gorilla/websocket v1.5.3 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect

go.sum

@@ -1,15 +1,13 @@
-dappco.re/go/core v0.8.0-alpha.1 h1:gj7+Scv+L63Z7wMxbJYHhaRFkHJo2u4MMPuUSv/Dhtk=
+dappco.re/go/core v0.5.0 h1:P5DJoaCiK5Q+af5UiTdWqUIW4W4qYKzpgGK50thm21U=
-dappco.re/go/core v0.8.0-alpha.1/go.mod h1:f2/tBZ3+3IqDrg2F5F598llv0nmb/4gJVCFzM5geE4A=
+dappco.re/go/core v0.5.0/go.mod h1:f2/tBZ3+3IqDrg2F5F598llv0nmb/4gJVCFzM5geE4A=
+dappco.re/go/core/api v0.2.0 h1:5OcN9nawpp18Jp6dB1OwI2CBfs0Tacb0y0zqxFB6TJ0=
+dappco.re/go/core/api v0.2.0/go.mod h1:AtgNAx8lDY+qhVObFdNQOjSUQrHX1BeiDdMuA6RIfzo=
 dappco.re/go/core/io v0.2.0 h1:zuudgIiTsQQ5ipVt97saWdGLROovbEB/zdVyy9/l+I4=
 dappco.re/go/core/io v0.2.0/go.mod h1:1QnQV6X9LNgFKfm8SkOtR9LLaj3bDcsOIeJOOyjbL5E=
 dappco.re/go/core/log v0.1.0 h1:pa71Vq2TD2aoEUQWFKwNcaJ3GBY8HbaNGqtE688Unyc=
 dappco.re/go/core/log v0.1.0/go.mod h1:Nkqb8gsXhZAO8VLpx7B8i1iAmohhzqA20b9Zr8VUcJs=
 dappco.re/go/core/ws v0.3.0 h1:ZxR8y5pfrWvnCHVN7qExXz7fdP5a063uNqyqE0Ab8pQ=
 dappco.re/go/core/ws v0.3.0/go.mod h1:aLyXrJnbCOGL0SW9rC1EHAAIS83w3djO374gHIz4Nic=
-forge.lthn.ai/core/api v0.1.5 h1:NwZrcOyBjaiz5/cn0n0tnlMUodi8Or6FHMx59C7Kv2o=
-forge.lthn.ai/core/api v0.1.5/go.mod h1:PBnaWyOVXSOGy+0x2XAPUFMYJxQ2CNhppia/D06ZPII=
-forge.lthn.ai/core/go-io v0.1.5 h1:+XJ1YhaGGFLGtcNbPtVlndTjk+pO0Ydi2hRDj5/cHOM=
-forge.lthn.ai/core/go-io v0.1.5/go.mod h1:FRtXSsi8W+U9vewCU+LBAqqbIj3wjXA4dBdSv3SAtWI=
 forge.lthn.ai/core/go-log v0.0.4 h1:KTuCEPgFmuM8KJfnyQ8vPOU1Jg654W74h8IJvfQMfv0=
 forge.lthn.ai/core/go-log v0.0.4/go.mod h1:r14MXKOD3LF/sI8XUJQhRk/SZHBE7jAFVuCfgkXoZPw=
 github.com/99designs/gqlgen v0.17.88 h1:neMQDgehMwT1vYIOx/w5ZYPUU/iMNAJzRO44I5Intoc=

health.go

@@ -2,34 +2,35 @@ package process
 
 import (
 	"context"
+	"fmt"
+	"io"
 	"net"
 	"net/http"
+	"strings"
 	"sync"
 	"time"
 
-	"dappco.re/go/core"
+	coreerr "dappco.re/go/core/log"
 )
 
-// HealthCheck is a function that returns nil if healthy.
+// HealthCheck is a function that returns nil when the service is healthy.
-//
-//	check := process.HealthCheck(func() error { return nil })
 type HealthCheck func() error
 
-// HealthServer provides HTTP /health and /ready endpoints for process monitoring.
+// HealthServer provides HTTP `/health` and `/ready` endpoints for process monitoring.
-//
-//	hs := process.NewHealthServer("127.0.0.1:0")
 type HealthServer struct {
 	addr     string
 	server   *http.Server
 	listener net.Listener
-	mu       sync.Mutex
+	mu       sync.RWMutex
 	ready    bool
 	checks   []HealthCheck
 }
 
 // NewHealthServer creates a health check server on the given address.
 //
-//	hs := process.NewHealthServer("127.0.0.1:0")
+// Example:
+//
+//	server := process.NewHealthServer("127.0.0.1:0")
 func NewHealthServer(addr string) *HealthServer {
 	return &HealthServer{
 		addr:  addr,
@@ -38,114 +39,240 @@ func NewHealthServer(addr string) *HealthServer {
 }
 
 // AddCheck registers a health check function.
+//
+// Example:
+//
+//	server.AddCheck(func() error { return nil })
 func (h *HealthServer) AddCheck(check HealthCheck) {
 	h.mu.Lock()
 	h.checks = append(h.checks, check)
 	h.mu.Unlock()
 }
 
-// SetReady sets the readiness status.
+// SetReady sets the readiness status used by `/ready`.
+//
+// Example:
+//
+//	server.SetReady(false)
 func (h *HealthServer) SetReady(ready bool) {
 	h.mu.Lock()
 	h.ready = ready
 	h.mu.Unlock()
 }
 
+// Ready reports whether `/ready` currently returns HTTP 200.
+//
+// Example:
+//
+//	if server.Ready() {
+//	    // publish the service
+//	}
+func (h *HealthServer) Ready() bool {
+	h.mu.RLock()
+	defer h.mu.RUnlock()
+	return h.ready
+}
+
 // Start begins serving health check endpoints.
+//
+// Example:
+//
+//	if err := server.Start(); err != nil { return err }
 func (h *HealthServer) Start() error {
 	mux := http.NewServeMux()
 
 	mux.HandleFunc("/health", func(w http.ResponseWriter, r *http.Request) {
-		h.mu.Lock()
+		checks := h.checksSnapshot()
-		checks := h.checks
-		h.mu.Unlock()
 
 		for _, check := range checks {
+			if check == nil {
+				continue
+			}
 			if err := check(); err != nil {
 				w.WriteHeader(http.StatusServiceUnavailable)
-				_, _ = w.Write([]byte("unhealthy: " + err.Error() + "\n"))
+				_, _ = fmt.Fprintf(w, "unhealthy: %v\n", err)
 				return
 			}
 		}
 
 		w.WriteHeader(http.StatusOK)
-		_, _ = w.Write([]byte("ok\n"))
+		_, _ = fmt.Fprintln(w, "ok")
 	})
 
 	mux.HandleFunc("/ready", func(w http.ResponseWriter, r *http.Request) {
-		h.mu.Lock()
+		h.mu.RLock()
 		ready := h.ready
-		h.mu.Unlock()
+		h.mu.RUnlock()
 
 		if !ready {
 			w.WriteHeader(http.StatusServiceUnavailable)
-			_, _ = w.Write([]byte("not ready\n"))
+			_, _ = fmt.Fprintln(w, "not ready")
 			return
 		}
 
 		w.WriteHeader(http.StatusOK)
-		_, _ = w.Write([]byte("ready\n"))
+		_, _ = fmt.Fprintln(w, "ready")
 	})
 
 	listener, err := net.Listen("tcp", h.addr)
 	if err != nil {
-		return core.E("health.start", core.Concat("failed to listen on ", h.addr), err)
+		return coreerr.E("HealthServer.Start", fmt.Sprintf("failed to listen on %s", h.addr), err)
 	}
 
 	server := &http.Server{Handler: mux}
+	h.mu.Lock()
 	h.listener = listener
 	h.server = server
+	h.mu.Unlock()
 
-	go func(srv *http.Server, ln net.Listener) {
+	go func() {
-		_ = srv.Serve(ln)
+		_ = server.Serve(listener)
-	}(server, listener)
+	}()
 
 	return nil
 }
 
+// checksSnapshot returns a stable copy of the registered health checks.
+func (h *HealthServer) checksSnapshot() []HealthCheck {
+	h.mu.RLock()
+	defer h.mu.RUnlock()
+
+	if len(h.checks) == 0 {
+		return nil
+	}
+
+	checks := make([]HealthCheck, len(h.checks))
+	copy(checks, h.checks)
+	return checks
+}
+
 // Stop gracefully shuts down the health server.
+//
+// Example:
+//
+//	_ = server.Stop(context.Background())
 func (h *HealthServer) Stop(ctx context.Context) error {
 	h.mu.Lock()
 	server := h.server
 	h.server = nil
 	h.listener = nil
+	h.ready = false
 	h.mu.Unlock()
 
 	if server == nil {
 		return nil
 	}
-
 	return server.Shutdown(ctx)
 }
 
 // Addr returns the actual address the server is listening on.
+//
+// Example:
+//
+//	addr := server.Addr()
 func (h *HealthServer) Addr() string {
+	h.mu.RLock()
+	defer h.mu.RUnlock()
 	if h.listener != nil {
 		return h.listener.Addr().String()
 	}
 	return h.addr
 }
 
-// WaitForHealth polls a health endpoint until it responds 200 or the timeout
+// WaitForHealth polls `/health` until it responds 200 or the timeout expires.
-// (in milliseconds) expires. Returns true if healthy, false on timeout.
 //
-//	ok := process.WaitForHealth("127.0.0.1:9000", 2_000)
+// Example:
+//
+//	if !process.WaitForHealth("127.0.0.1:8080", 5_000) {
+//	    return errors.New("service did not become ready")
+//	}
 func WaitForHealth(addr string, timeoutMs int) bool {
+	ok, _ := ProbeHealth(addr, timeoutMs)
+	return ok
+}
+
+// ProbeHealth polls `/health` until it responds 200 or the timeout expires.
+// It returns the health status and the last observed failure reason.
+//
+// Example:
+//
+//	ok, reason := process.ProbeHealth("127.0.0.1:8080", 5_000)
+func ProbeHealth(addr string, timeoutMs int) (bool, string) {
 	deadline := time.Now().Add(time.Duration(timeoutMs) * time.Millisecond)
-	url := core.Concat("http://", addr, "/health")
+	url := fmt.Sprintf("http://%s/health", addr)
 
 	client := &http.Client{Timeout: 2 * time.Second}
+	var lastReason string
 
 	for time.Now().Before(deadline) {
 		resp, err := client.Get(url)
 		if err == nil {
-			resp.Body.Close()
+			body, _ := io.ReadAll(resp.Body)
+			_ = resp.Body.Close()
 			if resp.StatusCode == http.StatusOK {
-				return true
+				return true, ""
 			}
+			lastReason = strings.TrimSpace(string(body))
+			if lastReason == "" {
+				lastReason = resp.Status
+			}
+		} else {
+			lastReason = err.Error()
 		}
 		time.Sleep(200 * time.Millisecond)
 	}
 
-	return false
+	if lastReason == "" {
+		lastReason = "health check timed out"
+	}
+	return false, lastReason
+}
+
+// WaitForReady polls `/ready` until it responds 200 or the timeout expires.
+//
+// Example:
+//
+//	if !process.WaitForReady("127.0.0.1:8080", 5_000) {
+//	    return errors.New("service did not become ready")
+//	}
+func WaitForReady(addr string, timeoutMs int) bool {
+	ok, _ := ProbeReady(addr, timeoutMs)
+	return ok
+}
+
+// ProbeReady polls `/ready` until it responds 200 or the timeout expires.
+// It returns the readiness status and the last observed failure reason.
+//
+// Example:
+//
+//	ok, reason := process.ProbeReady("127.0.0.1:8080", 5_000)
+func ProbeReady(addr string, timeoutMs int) (bool, string) {
+	deadline := time.Now().Add(time.Duration(timeoutMs) * time.Millisecond)
+	url := fmt.Sprintf("http://%s/ready", addr)
+
+	client := &http.Client{Timeout: 2 * time.Second}
+	var lastReason string
+
+	for time.Now().Before(deadline) {
+		resp, err := client.Get(url)
+		if err == nil {
+			body, _ := io.ReadAll(resp.Body)
+			_ = resp.Body.Close()
+			if resp.StatusCode == http.StatusOK {
+				return true, ""
+			}
+			lastReason = strings.TrimSpace(string(body))
+			if lastReason == "" {
+				lastReason = resp.Status
+			}
+		} else {
+			lastReason = err.Error()
+		}
+		time.Sleep(200 * time.Millisecond)
+	}
+
+	if lastReason == "" {
+		lastReason = "readiness check timed out"
+	}
+	return false, lastReason
 }

health_test.go

@@ -9,8 +9,9 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-func TestHealthServer_Endpoints_Good(t *testing.T) {
+func TestHealthServer_Endpoints(t *testing.T) {
 	hs := NewHealthServer("127.0.0.1:0")
+	assert.True(t, hs.Ready())
 	err := hs.Start()
 	require.NoError(t, err)
 	defer func() { _ = hs.Stop(context.Background()) }()
@@ -29,6 +30,7 @@ func TestHealthServer_Endpoints_Good(t *testing.T) {
 	_ = resp.Body.Close()
 
 	hs.SetReady(false)
+	assert.False(t, hs.Ready())
 
 	resp, err = http.Get("http://" + addr + "/ready")
 	require.NoError(t, err)
@@ -36,7 +38,16 @@ func TestHealthServer_Endpoints_Good(t *testing.T) {
 	_ = resp.Body.Close()
 }
 
-func TestHealthServer_WithChecks_Good(t *testing.T) {
+func TestHealthServer_Ready(t *testing.T) {
+	hs := NewHealthServer("127.0.0.1:0")
+
+	assert.True(t, hs.Ready())
+
+	hs.SetReady(false)
+	assert.False(t, hs.Ready())
+}
+
+func TestHealthServer_WithChecks(t *testing.T) {
 	hs := NewHealthServer("127.0.0.1:0")
 
 	healthy := true
@@ -66,13 +77,36 @@ func TestHealthServer_WithChecks_Good(t *testing.T) {
 	_ = resp.Body.Close()
 }
 
-func TestHealthServer_StopImmediately_Good(t *testing.T) {
+func TestHealthServer_NilCheckIgnored(t *testing.T) {
 	hs := NewHealthServer("127.0.0.1:0")
-	require.NoError(t, hs.Start())
+
-	require.NoError(t, hs.Stop(context.Background()))
+	var check HealthCheck
+	hs.AddCheck(check)
+
+	err := hs.Start()
+	require.NoError(t, err)
+	defer func() { _ = hs.Stop(context.Background()) }()
+
+	addr := hs.Addr()
+
+	resp, err := http.Get("http://" + addr + "/health")
+	require.NoError(t, err)
+	assert.Equal(t, http.StatusOK, resp.StatusCode)
+	_ = resp.Body.Close()
 }
 
-func TestWaitForHealth_Reachable_Good(t *testing.T) {
+func TestHealthServer_ChecksSnapshotIsStable(t *testing.T) {
+	hs := NewHealthServer("127.0.0.1:0")
+
+	hs.AddCheck(func() error { return nil })
+	snapshot := hs.checksSnapshot()
+	hs.AddCheck(func() error { return assert.AnError })
+
+	require.Len(t, snapshot, 1)
+	require.NotNil(t, snapshot[0])
+}
+
+func TestWaitForHealth_Reachable(t *testing.T) {
 	hs := NewHealthServer("127.0.0.1:0")
 	require.NoError(t, hs.Start())
 	defer func() { _ = hs.Stop(context.Background()) }()
@@ -81,7 +115,34 @@ func TestWaitForHealth_Reachable_Good(t *testing.T) {
 	assert.True(t, ok)
 }
 
-func TestWaitForHealth_Unreachable_Bad(t *testing.T) {
+func TestWaitForHealth_Unreachable(t *testing.T) {
 	ok := WaitForHealth("127.0.0.1:19999", 500)
 	assert.False(t, ok)
 }
+
+func TestWaitForReady_Reachable(t *testing.T) {
+	hs := NewHealthServer("127.0.0.1:0")
+	require.NoError(t, hs.Start())
+	defer func() { _ = hs.Stop(context.Background()) }()
+
+	ok := WaitForReady(hs.Addr(), 2_000)
+	assert.True(t, ok)
+}
+
+func TestWaitForReady_Unreachable(t *testing.T) {
+	ok := WaitForReady("127.0.0.1:19999", 500)
+	assert.False(t, ok)
+}
+
+func TestHealthServer_StopMarksNotReady(t *testing.T) {
+	hs := NewHealthServer("127.0.0.1:0")
+	require.NoError(t, hs.Start())
+
+	require.NotEmpty(t, hs.Addr())
+	assert.True(t, hs.Ready())
+
+	require.NoError(t, hs.Stop(context.Background()))
+
+	assert.False(t, hs.Ready())
+	assert.NotEmpty(t, hs.Addr())
+}

pidfile.go

@@ -1,70 +1,92 @@
 package process
 
 import (
-	"bytes"
+	"fmt"
-	"path"
+	"os"
+	"path/filepath"
 	"strconv"
+	"strings"
 	"sync"
 	"syscall"
 
-	"dappco.re/go/core"
 	coreio "dappco.re/go/core/io"
+	coreerr "dappco.re/go/core/log"
 )
 
 // PIDFile manages a process ID file for single-instance enforcement.
+//
+// Example:
+//
+//	pidFile := process.NewPIDFile("/var/run/myapp.pid")
 type PIDFile struct {
 	path string
 	mu   sync.Mutex
 }
 
 // NewPIDFile creates a PID file manager.
+//
+// Example:
+//
+//	pidFile := process.NewPIDFile("/var/run/myapp.pid")
 func NewPIDFile(path string) *PIDFile {
 	return &PIDFile{path: path}
 }
 
 // Acquire writes the current PID to the file.
 // Returns error if another instance is running.
+//
+// Example:
+//
+//	if err := pidFile.Acquire(); err != nil { return err }
 func (p *PIDFile) Acquire() error {
 	p.mu.Lock()
 	defer p.mu.Unlock()
 
 	if data, err := coreio.Local.Read(p.path); err == nil {
-		pid, err := strconv.Atoi(string(bytes.TrimSpace([]byte(data))))
+		pid, err := strconv.Atoi(strings.TrimSpace(data))
 		if err == nil && pid > 0 {
-			if proc, err := processHandle(pid); err == nil {
+			if proc, err := os.FindProcess(pid); err == nil {
 				if err := proc.Signal(syscall.Signal(0)); err == nil {
-					return core.E("pidfile.acquire", core.Concat("another instance is running (PID ", strconv.Itoa(pid), ")"), nil)
+					return coreerr.E("PIDFile.Acquire", fmt.Sprintf("another instance is running (PID %d)", pid), nil)
 				}
 			}
 		}
 		_ = coreio.Local.Delete(p.path)
 	}
 
-	if dir := path.Dir(p.path); dir != "." {
+	if dir := filepath.Dir(p.path); dir != "." {
 		if err := coreio.Local.EnsureDir(dir); err != nil {
-			return core.E("pidfile.acquire", "failed to create PID directory", err)
+			return coreerr.E("PIDFile.Acquire", "failed to create PID directory", err)
 		}
 	}
 
-	pid := currentPID()
+	pid := os.Getpid()
 	if err := coreio.Local.Write(p.path, strconv.Itoa(pid)); err != nil {
-		return core.E("pidfile.acquire", "failed to write PID file", err)
+		return coreerr.E("PIDFile.Acquire", "failed to write PID file", err)
 	}
 
 	return nil
 }
 
 // Release removes the PID file.
+//
+// Example:
+//
+//	_ = pidFile.Release()
 func (p *PIDFile) Release() error {
 	p.mu.Lock()
 	defer p.mu.Unlock()
 	if err := coreio.Local.Delete(p.path); err != nil {
-		return core.E("pidfile.release", "failed to remove PID file", err)
+		return coreerr.E("PIDFile.Release", "failed to remove PID file", err)
 	}
 	return nil
 }
 
 // Path returns the PID file path.
+//
+// Example:
+//
+//	path := pidFile.Path()
 func (p *PIDFile) Path() string {
 	return p.path
 }
@@ -72,18 +94,22 @@ func (p *PIDFile) Path() string {
 // ReadPID reads a PID file and checks if the process is still running.
 // Returns (pid, true) if the process is alive, (pid, false) if dead/stale,
 // or (0, false) if the file doesn't exist or is invalid.
+//
+// Example:
+//
+//	pid, running := process.ReadPID("/var/run/myapp.pid")
 func ReadPID(path string) (int, bool) {
 	data, err := coreio.Local.Read(path)
 	if err != nil {
 		return 0, false
 	}
 
-	pid, err := strconv.Atoi(string(bytes.TrimSpace([]byte(data))))
+	pid, err := strconv.Atoi(strings.TrimSpace(data))
 	if err != nil || pid <= 0 {
 		return 0, false
 	}
 
-	proc, err := processHandle(pid)
+	proc, err := os.FindProcess(pid)
 	if err != nil {
 		return pid, false
 	}

pidfile_test.go

@@ -2,15 +2,15 @@ package process
 
 import (
 	"os"
+	"path/filepath"
 	"testing"
 
-	"dappco.re/go/core"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
 
-func TestPIDFile_Acquire_Good(t *testing.T) {
+func TestPIDFile_AcquireAndRelease(t *testing.T) {
-	pidPath := core.JoinPath(t.TempDir(), "test.pid")
+	pidPath := filepath.Join(t.TempDir(), "test.pid")
 	pid := NewPIDFile(pidPath)
 	err := pid.Acquire()
 	require.NoError(t, err)
@@ -23,8 +23,8 @@ func TestPIDFile_Acquire_Good(t *testing.T) {
 	assert.True(t, os.IsNotExist(err))
 }
 
-func TestPIDFile_AcquireStale_Good(t *testing.T) {
+func TestPIDFile_StalePID(t *testing.T) {
-	pidPath := core.JoinPath(t.TempDir(), "stale.pid")
+	pidPath := filepath.Join(t.TempDir(), "stale.pid")
 	require.NoError(t, os.WriteFile(pidPath, []byte("999999999"), 0644))
 	pid := NewPIDFile(pidPath)
 	err := pid.Acquire()
@@ -33,8 +33,8 @@ func TestPIDFile_AcquireStale_Good(t *testing.T) {
 	require.NoError(t, err)
 }
 
-func TestPIDFile_CreateDirectory_Good(t *testing.T) {
+func TestPIDFile_CreatesParentDirectory(t *testing.T) {
-	pidPath := core.JoinPath(t.TempDir(), "subdir", "nested", "test.pid")
+	pidPath := filepath.Join(t.TempDir(), "subdir", "nested", "test.pid")
 	pid := NewPIDFile(pidPath)
 	err := pid.Acquire()
 	require.NoError(t, err)
@@ -42,27 +42,27 @@ func TestPIDFile_CreateDirectory_Good(t *testing.T) {
 	require.NoError(t, err)
 }
 
-func TestPIDFile_Path_Good(t *testing.T) {
+func TestPIDFile_Path(t *testing.T) {
 	pid := NewPIDFile("/tmp/test.pid")
 	assert.Equal(t, "/tmp/test.pid", pid.Path())
 }
 
-func TestReadPID_Missing_Bad(t *testing.T) {
+func TestReadPID_Missing(t *testing.T) {
 	pid, running := ReadPID("/nonexistent/path.pid")
 	assert.Equal(t, 0, pid)
 	assert.False(t, running)
 }
 
-func TestReadPID_Invalid_Bad(t *testing.T) {
+func TestReadPID_InvalidContent(t *testing.T) {
-	path := core.JoinPath(t.TempDir(), "bad.pid")
+	path := filepath.Join(t.TempDir(), "bad.pid")
 	require.NoError(t, os.WriteFile(path, []byte("notanumber"), 0644))
 	pid, running := ReadPID(path)
 	assert.Equal(t, 0, pid)
 	assert.False(t, running)
 }
 
-func TestReadPID_Stale_Bad(t *testing.T) {
+func TestReadPID_StalePID(t *testing.T) {
-	path := core.JoinPath(t.TempDir(), "stale.pid")
+	path := filepath.Join(t.TempDir(), "stale.pid")
 	require.NoError(t, os.WriteFile(path, []byte("999999999"), 0644))
 	pid, running := ReadPID(path)
 	assert.Equal(t, 999999999, pid)

pkg/api/provider.go

@@ -5,15 +5,21 @@
 package api
 
 import (
+	"context"
 	"net/http"
 	"os"
 	"strconv"
+	"strings"
+	"sync"
 	"syscall"
+	"time"
 
+	"dappco.re/go/core"
+	"dappco.re/go/core/api"
+	"dappco.re/go/core/api/pkg/provider"
+	coreerr "dappco.re/go/core/log"
 	process "dappco.re/go/core/process"
 	"dappco.re/go/core/ws"
-	"forge.lthn.ai/core/api"
-	"forge.lthn.ai/core/api/pkg/provider"
 	"github.com/gin-gonic/gin"
 )
 
@@ -22,7 +28,10 @@ import (
 // and provider.Renderable.
 type ProcessProvider struct {
 	registry *process.Registry
+	service  *process.Service
+	runner   *process.Runner
 	hub      *ws.Hub
+	actions  sync.Once
 }
 
 // compile-time interface checks
@@ -33,17 +42,25 @@ var (
 	_ provider.Renderable  = (*ProcessProvider)(nil)
 )
 
-// NewProvider creates a process provider backed by the given daemon registry.
+// NewProvider creates a process provider backed by the given daemon registry
+// and optional process service for pipeline execution.
+//
 // The WS hub is used to emit daemon state change events. Pass nil for hub
 // if WebSocket streaming is not needed.
-func NewProvider(registry *process.Registry, hub *ws.Hub) *ProcessProvider {
+func NewProvider(registry *process.Registry, service *process.Service, hub *ws.Hub) *ProcessProvider {
 	if registry == nil {
 		registry = process.DefaultRegistry()
 	}
-	return &ProcessProvider{
+	p := &ProcessProvider{
 		registry: registry,
+		service:  service,
 		hub:      hub,
 	}
+	if service != nil {
+		p.runner = process.NewRunner(service)
+	}
+	p.registerProcessEvents()
+	return p
 }
 
 // Name implements api.RouteGroup.
@@ -79,6 +96,17 @@ func (p *ProcessProvider) RegisterRoutes(rg *gin.RouterGroup) {
 	rg.GET("/daemons/:code/:daemon", p.getDaemon)
 	rg.POST("/daemons/:code/:daemon/stop", p.stopDaemon)
 	rg.GET("/daemons/:code/:daemon/health", p.healthCheck)
+	rg.GET("/processes", p.listProcesses)
+	rg.POST("/processes", p.startProcess)
+	rg.POST("/processes/run", p.runProcess)
+	rg.GET("/processes/:id", p.getProcess)
+	rg.GET("/processes/:id/output", p.getProcessOutput)
+	rg.POST("/processes/:id/wait", p.waitProcess)
+	rg.POST("/processes/:id/input", p.inputProcess)
+	rg.POST("/processes/:id/close-stdin", p.closeProcessStdin)
+	rg.POST("/processes/:id/kill", p.killProcess)
+	rg.POST("/processes/:id/signal", p.signalProcess)
+	rg.POST("/pipelines/run", p.runPipeline)
 }
 
 // Describe implements api.DescribableGroup.
@@ -119,8 +147,6 @@ func (p *ProcessProvider) Describe() []api.RouteDescription {
 					"daemon":  map[string]any{"type": "string"},
 					"pid":     map[string]any{"type": "integer"},
 					"health":  map[string]any{"type": "string"},
-					"project": map[string]any{"type": "string"},
-					"binary":  map[string]any{"type": "string"},
 					"started": map[string]any{"type": "string", "format": "date-time"},
 				},
 			},
@@ -142,7 +168,7 @@ func (p *ProcessProvider) Describe() []api.RouteDescription {
 			Method:      "GET",
 			Path:        "/daemons/:code/:daemon/health",
 			Summary:     "Check daemon health",
-			Description: "Probes the daemon's health endpoint and returns the result.",
+			Description: "Probes the daemon's health endpoint and returns the result, including a failure reason when unhealthy.",
 			Tags:        []string{"process"},
 			Response: map[string]any{
 				"type": "object",
@@ -153,6 +179,232 @@ func (p *ProcessProvider) Describe() []api.RouteDescription {
 				},
 			},
 		},
+		{
+			Method:      "GET",
+			Path:        "/processes",
+			Summary:     "List managed processes",
+			Description: "Returns the current process service snapshot as serialisable process info entries. Pass runningOnly=true to limit results to active processes.",
+			Tags:        []string{"process"},
+			Response: map[string]any{
+				"type": "array",
+				"items": map[string]any{
+					"type": "object",
+					"properties": map[string]any{
+						"id":        map[string]any{"type": "string"},
+						"command":   map[string]any{"type": "string"},
+						"args":      map[string]any{"type": "array"},
+						"dir":       map[string]any{"type": "string"},
+						"startedAt": map[string]any{"type": "string", "format": "date-time"},
+						"running":   map[string]any{"type": "boolean"},
+						"status":    map[string]any{"type": "string"},
+						"exitCode":  map[string]any{"type": "integer"},
+						"duration":  map[string]any{"type": "integer"},
+						"pid":       map[string]any{"type": "integer"},
+					},
+				},
+			},
+		},
+		{
+			Method:      "POST",
+			Path:        "/processes",
+			Summary:     "Start a managed process",
+			Description: "Starts a process asynchronously and returns its initial snapshot immediately.",
+			Tags:        []string{"process"},
+			RequestBody: map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"command":        map[string]any{"type": "string"},
+					"args":           map[string]any{"type": "array"},
+					"dir":            map[string]any{"type": "string"},
+					"env":            map[string]any{"type": "array"},
+					"disableCapture": map[string]any{"type": "boolean"},
+					"detach":         map[string]any{"type": "boolean"},
+					"timeout":        map[string]any{"type": "integer"},
+					"gracePeriod":    map[string]any{"type": "integer"},
+					"killGroup":      map[string]any{"type": "boolean"},
+				},
+				"required": []string{"command"},
+			},
+			Response: map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"id":        map[string]any{"type": "string"},
+					"command":   map[string]any{"type": "string"},
+					"args":      map[string]any{"type": "array"},
+					"dir":       map[string]any{"type": "string"},
+					"startedAt": map[string]any{"type": "string", "format": "date-time"},
+					"running":   map[string]any{"type": "boolean"},
+					"status":    map[string]any{"type": "string"},
+					"exitCode":  map[string]any{"type": "integer"},
+					"duration":  map[string]any{"type": "integer"},
+					"pid":       map[string]any{"type": "integer"},
+				},
+			},
+		},
+		{
+			Method:      "POST",
+			Path:        "/processes/run",
+			Summary:     "Run a managed process",
+			Description: "Runs a process synchronously and returns its combined output on success.",
+			Tags:        []string{"process"},
+			RequestBody: map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"command":        map[string]any{"type": "string"},
+					"args":           map[string]any{"type": "array"},
+					"dir":            map[string]any{"type": "string"},
+					"env":            map[string]any{"type": "array"},
+					"disableCapture": map[string]any{"type": "boolean"},
+					"detach":         map[string]any{"type": "boolean"},
+					"timeout":        map[string]any{"type": "integer"},
+					"gracePeriod":    map[string]any{"type": "integer"},
+					"killGroup":      map[string]any{"type": "boolean"},
+				},
+				"required": []string{"command"},
+			},
+			Response: map[string]any{
+				"type": "string",
+			},
+		},
+		{
+			Method:      "GET",
+			Path:        "/processes/:id",
+			Summary:     "Get a managed process",
+			Description: "Returns a single managed process by ID as a process info snapshot.",
+			Tags:        []string{"process"},
+			Response: map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"id":        map[string]any{"type": "string"},
+					"command":   map[string]any{"type": "string"},
+					"args":      map[string]any{"type": "array"},
+					"dir":       map[string]any{"type": "string"},
+					"startedAt": map[string]any{"type": "string", "format": "date-time"},
+					"running":   map[string]any{"type": "boolean"},
+					"status":    map[string]any{"type": "string"},
+					"exitCode":  map[string]any{"type": "integer"},
+					"duration":  map[string]any{"type": "integer"},
+					"pid":       map[string]any{"type": "integer"},
+				},
+			},
+		},
+		{
+			Method:      "GET",
+			Path:        "/processes/:id/output",
+			Summary:     "Get process output",
+			Description: "Returns the captured stdout and stderr for a managed process.",
+			Tags:        []string{"process"},
+			Response: map[string]any{
+				"type": "string",
+			},
+		},
+		{
+			Method:      "POST",
+			Path:        "/processes/:id/wait",
+			Summary:     "Wait for a managed process",
+			Description: "Blocks until the process exits and returns the final process snapshot. Non-zero exits include the snapshot in the error details payload.",
+			Tags:        []string{"process"},
+			Response: map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"id":        map[string]any{"type": "string"},
+					"command":   map[string]any{"type": "string"},
+					"args":      map[string]any{"type": "array"},
+					"dir":       map[string]any{"type": "string"},
+					"startedAt": map[string]any{"type": "string", "format": "date-time"},
+					"running":   map[string]any{"type": "boolean"},
+					"status":    map[string]any{"type": "string"},
+					"exitCode":  map[string]any{"type": "integer"},
+					"duration":  map[string]any{"type": "integer"},
+					"pid":       map[string]any{"type": "integer"},
+				},
+			},
+		},
+		{
+			Method:      "POST",
+			Path:        "/processes/:id/input",
+			Summary:     "Write process input",
+			Description: "Writes the provided input string to a managed process stdin pipe.",
+			Tags:        []string{"process"},
+			RequestBody: map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"input": map[string]any{"type": "string"},
+				},
+				"required": []string{"input"},
+			},
+			Response: map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"written": map[string]any{"type": "boolean"},
+				},
+			},
+		},
+		{
+			Method:      "POST",
+			Path:        "/processes/:id/close-stdin",
+			Summary:     "Close process stdin",
+			Description: "Closes the stdin pipe of a managed process so it can exit cleanly.",
+			Tags:        []string{"process"},
+			Response: map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"closed": map[string]any{"type": "boolean"},
+				},
+			},
+		},
+		{
+			Method:      "POST",
+			Path:        "/processes/:id/kill",
+			Summary:     "Kill a managed process",
+			Description: "Sends SIGKILL to the managed process identified by ID, or to a raw OS PID when the path value is numeric.",
+			Tags:        []string{"process"},
+			Response: map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"killed": map[string]any{"type": "boolean"},
+				},
+			},
+		},
+		{
+			Method:      "POST",
+			Path:        "/processes/:id/signal",
+			Summary:     "Signal a managed process",
+			Description: "Sends a Unix signal to the managed process identified by ID, or to a raw OS PID when the path value is numeric.",
+			Tags:        []string{"process"},
+			RequestBody: map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"signal": map[string]any{"type": "string"},
+				},
+				"required": []string{"signal"},
+			},
+			Response: map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"signalled": map[string]any{"type": "boolean"},
+				},
+			},
+		},
+		{
+			Method:      "POST",
+			Path:        "/pipelines/run",
+			Summary:     "Run a process pipeline",
+			Description: "Executes a list of process specs using the configured runner in sequential, parallel, or dependency-aware mode.",
+			Tags:        []string{"process"},
+			Response: map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"results": map[string]any{
+						"type": "array",
+					},
+					"duration": map[string]any{"type": "integer"},
+					"passed":   map[string]any{"type": "integer"},
+					"failed":   map[string]any{"type": "integer"},
+					"skipped":  map[string]any{"type": "integer"},
+				},
+			},
+		},
 	}
 }
 
@@ -167,6 +419,9 @@ func (p *ProcessProvider) listDaemons(c *gin.Context) {
 	if entries == nil {
 		entries = []process.DaemonEntry{}
 	}
+	for _, entry := range entries {
+		p.emitEvent("process.daemon.started", daemonEventPayload(entry))
+	}
 	c.JSON(http.StatusOK, api.OK(entries))
 }
 
@@ -179,6 +434,7 @@ func (p *ProcessProvider) getDaemon(c *gin.Context) {
 		c.JSON(http.StatusNotFound, api.Fail("not_found", "daemon not found or not running"))
 		return
 	}
+	p.emitEvent("process.daemon.started", daemonEventPayload(*entry))
 	c.JSON(http.StatusOK, api.OK(entry))
 }
 
@@ -235,16 +491,14 @@ func (p *ProcessProvider) healthCheck(c *gin.Context) {
 		return
 	}
 
-	healthy := process.WaitForHealth(entry.Health, 2000)
+	healthy, reason := process.ProbeHealth(entry.Health, 2000)
-	reason := ""
-	if !healthy {
-		reason = "health endpoint did not report healthy"
-	}
 
 	result := map[string]any{
 		"healthy": healthy,
 		"address": entry.Health,
-		"reason":  reason,
+	}
+	if !healthy && reason != "" {
+		result["reason"] = reason
 	}
 
 	// Emit health event
@@ -262,15 +516,346 @@ func (p *ProcessProvider) healthCheck(c *gin.Context) {
 	c.JSON(statusCode, api.OK(result))
 }
 
+func (p *ProcessProvider) listProcesses(c *gin.Context) {
+	if p.service == nil {
+		c.JSON(http.StatusServiceUnavailable, api.Fail("service_unavailable", "process service is not configured"))
+		return
+	}
+
+	procs := p.service.List()
+	if runningOnly, _ := strconv.ParseBool(c.Query("runningOnly")); runningOnly {
+		procs = p.service.Running()
+	}
+	infos := make([]process.Info, 0, len(procs))
+	for _, proc := range procs {
+		infos = append(infos, proc.Info())
+	}
+
+	c.JSON(http.StatusOK, api.OK(infos))
+}
+
+func (p *ProcessProvider) startProcess(c *gin.Context) {
+	if p.service == nil {
+		c.JSON(http.StatusServiceUnavailable, api.Fail("service_unavailable", "process service is not configured"))
+		return
+	}
+
+	var req process.TaskProcessStart
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, api.Fail("invalid_request", err.Error()))
+		return
+	}
+	if strings.TrimSpace(req.Command) == "" {
+		c.JSON(http.StatusBadRequest, api.Fail("invalid_request", "command is required"))
+		return
+	}
+
+	proc, err := p.service.StartWithOptions(c.Request.Context(), process.RunOptions{
+		Command:        req.Command,
+		Args:           req.Args,
+		Dir:            req.Dir,
+		Env:            req.Env,
+		DisableCapture: req.DisableCapture,
+		Detach:         req.Detach,
+		Timeout:        req.Timeout,
+		GracePeriod:    req.GracePeriod,
+		KillGroup:      req.KillGroup,
+	})
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, api.Fail("start_failed", err.Error()))
+		return
+	}
+
+	c.JSON(http.StatusOK, api.OK(proc.Info()))
+}
+
+func (p *ProcessProvider) runProcess(c *gin.Context) {
+	if p.service == nil {
+		c.JSON(http.StatusServiceUnavailable, api.Fail("service_unavailable", "process service is not configured"))
+		return
+	}
+
+	var req process.TaskProcessRun
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, api.Fail("invalid_request", err.Error()))
+		return
+	}
+	if strings.TrimSpace(req.Command) == "" {
+		c.JSON(http.StatusBadRequest, api.Fail("invalid_request", "command is required"))
+		return
+	}
+
+	output, err := p.service.RunWithOptions(c.Request.Context(), process.RunOptions{
+		Command:        req.Command,
+		Args:           req.Args,
+		Dir:            req.Dir,
+		Env:            req.Env,
+		DisableCapture: req.DisableCapture,
+		Detach:         req.Detach,
+		Timeout:        req.Timeout,
+		GracePeriod:    req.GracePeriod,
+		KillGroup:      req.KillGroup,
+	})
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, api.FailWithDetails("run_failed", err.Error(), map[string]any{
+			"output": output,
+		}))
+		return
+	}
+
+	c.JSON(http.StatusOK, api.OK(output))
+}
+
+func (p *ProcessProvider) getProcess(c *gin.Context) {
+	if p.service == nil {
+		c.JSON(http.StatusServiceUnavailable, api.Fail("service_unavailable", "process service is not configured"))
+		return
+	}
+
+	proc, err := p.service.Get(c.Param("id"))
+	if err != nil {
+		c.JSON(http.StatusNotFound, api.Fail("not_found", err.Error()))
+		return
+	}
+
+	c.JSON(http.StatusOK, api.OK(proc.Info()))
+}
+
+func (p *ProcessProvider) getProcessOutput(c *gin.Context) {
+	if p.service == nil {
+		c.JSON(http.StatusServiceUnavailable, api.Fail("service_unavailable", "process service is not configured"))
+		return
+	}
+
+	output, err := p.service.Output(c.Param("id"))
+	if err != nil {
+		status := http.StatusInternalServerError
+		if err == process.ErrProcessNotFound {
+			status = http.StatusNotFound
+		}
+		c.JSON(status, api.Fail("not_found", err.Error()))
+		return
+	}
+
+	c.JSON(http.StatusOK, api.OK(output))
+}
+
+func (p *ProcessProvider) waitProcess(c *gin.Context) {
+	if p.service == nil {
+		c.JSON(http.StatusServiceUnavailable, api.Fail("service_unavailable", "process service is not configured"))
+		return
+	}
+
+	info, err := p.service.Wait(c.Param("id"))
+	if err != nil {
+		status := http.StatusInternalServerError
+		switch {
+		case err == process.ErrProcessNotFound:
+			status = http.StatusNotFound
+		case info.Status == process.StatusExited || info.Status == process.StatusKilled:
+			status = http.StatusConflict
+		}
+		c.JSON(status, api.FailWithDetails("wait_failed", err.Error(), info))
+		return
+	}
+
+	c.JSON(http.StatusOK, api.OK(info))
+}
+
+type processInputRequest struct {
+	Input string `json:"input"`
+}
+
+func (p *ProcessProvider) inputProcess(c *gin.Context) {
+	if p.service == nil {
+		c.JSON(http.StatusServiceUnavailable, api.Fail("service_unavailable", "process service is not configured"))
+		return
+	}
+
+	var req processInputRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, api.Fail("invalid_request", err.Error()))
+		return
+	}
+
+	if err := p.service.Input(c.Param("id"), req.Input); err != nil {
+		status := http.StatusInternalServerError
+		if err == process.ErrProcessNotFound || err == process.ErrProcessNotRunning {
+			status = http.StatusNotFound
+		}
+		c.JSON(status, api.Fail("input_failed", err.Error()))
+		return
+	}
+
+	c.JSON(http.StatusOK, api.OK(map[string]any{"written": true}))
+}
+
+func (p *ProcessProvider) closeProcessStdin(c *gin.Context) {
+	if p.service == nil {
+		c.JSON(http.StatusServiceUnavailable, api.Fail("service_unavailable", "process service is not configured"))
+		return
+	}
+
+	if err := p.service.CloseStdin(c.Param("id")); err != nil {
+		status := http.StatusInternalServerError
+		if err == process.ErrProcessNotFound {
+			status = http.StatusNotFound
+		}
+		c.JSON(status, api.Fail("close_stdin_failed", err.Error()))
+		return
+	}
+
+	c.JSON(http.StatusOK, api.OK(map[string]any{"closed": true}))
+}
+
+func (p *ProcessProvider) killProcess(c *gin.Context) {
+	if p.service == nil {
+		c.JSON(http.StatusServiceUnavailable, api.Fail("service_unavailable", "process service is not configured"))
+		return
+	}
+
+	id := c.Param("id")
+	if err := p.service.Kill(id); err != nil {
+		if pid, ok := pidFromString(id); ok {
+			if pidErr := p.service.KillPID(pid); pidErr == nil {
+				c.JSON(http.StatusOK, api.OK(map[string]any{"killed": true}))
+				return
+			} else {
+				err = pidErr
+			}
+		}
+		status := http.StatusInternalServerError
+		if err == process.ErrProcessNotFound {
+			status = http.StatusNotFound
+		}
+		c.JSON(status, api.Fail("kill_failed", err.Error()))
+		return
+	}
+
+	c.JSON(http.StatusOK, api.OK(map[string]any{"killed": true}))
+}
+
+type processSignalRequest struct {
+	Signal string `json:"signal"`
+}
+
+func (p *ProcessProvider) signalProcess(c *gin.Context) {
+	if p.service == nil {
+		c.JSON(http.StatusServiceUnavailable, api.Fail("service_unavailable", "process service is not configured"))
+		return
+	}
+
+	var req processSignalRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, api.Fail("invalid_request", err.Error()))
+		return
+	}
+
+	sig, err := parseSignal(req.Signal)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, api.Fail("invalid_signal", err.Error()))
+		return
+	}
+
+	id := c.Param("id")
+	if err := p.service.Signal(id, sig); err != nil {
+		if pid, ok := pidFromString(id); ok {
+			if pidErr := p.service.SignalPID(pid, sig); pidErr == nil {
+				c.JSON(http.StatusOK, api.OK(map[string]any{"signalled": true}))
+				return
+			} else {
+				err = pidErr
+			}
+		}
+		status := http.StatusInternalServerError
+		if err == process.ErrProcessNotFound || err == process.ErrProcessNotRunning {
+			status = http.StatusNotFound
+		}
+		c.JSON(status, api.Fail("signal_failed", err.Error()))
+		return
+	}
+
+	c.JSON(http.StatusOK, api.OK(map[string]any{"signalled": true}))
+}
+
+type pipelineRunRequest struct {
+	Mode  string            `json:"mode"`
+	Specs []process.RunSpec `json:"specs"`
+}
+
+func (p *ProcessProvider) runPipeline(c *gin.Context) {
+	if p.runner == nil {
+		c.JSON(http.StatusServiceUnavailable, api.Fail("runner_unavailable", "pipeline runner is not configured"))
+		return
+	}
+
+	var req pipelineRunRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, api.Fail("invalid_request", err.Error()))
+		return
+	}
+
+	mode := strings.ToLower(strings.TrimSpace(req.Mode))
+	if mode == "" {
+		mode = "all"
+	}
+
+	ctx := c.Request.Context()
+	if ctx == nil {
+		ctx = context.Background()
+	}
+
+	var (
+		result *process.RunAllResult
+		err    error
+	)
+
+	switch mode {
+	case "all":
+		result, err = p.runner.RunAll(ctx, req.Specs)
+	case "sequential":
+		result, err = p.runner.RunSequential(ctx, req.Specs)
+	case "parallel":
+		result, err = p.runner.RunParallel(ctx, req.Specs)
+	default:
+		c.JSON(http.StatusBadRequest, api.Fail("invalid_mode", "mode must be one of: all, sequential, parallel"))
+		return
+	}
+	if err != nil {
+		c.JSON(http.StatusBadRequest, api.Fail("pipeline_failed", err.Error()))
+		return
+	}
+
+	c.JSON(http.StatusOK, api.OK(result))
+}
+
 // emitEvent sends a WS event if the hub is available.
 func (p *ProcessProvider) emitEvent(channel string, data any) {
 	if p.hub == nil {
 		return
 	}
-	_ = p.hub.SendToChannel(channel, ws.Message{
+	msg := ws.Message{
 		Type: ws.TypeEvent,
 		Data: data,
+	}
+	_ = p.hub.Broadcast(ws.Message{
+		Type:    msg.Type,
+		Channel: channel,
+		Data:    data,
 	})
+	_ = p.hub.SendToChannel(channel, msg)
+}
+
+func daemonEventPayload(entry process.DaemonEntry) map[string]any {
+	return map[string]any{
+		"code":    entry.Code,
+		"daemon":  entry.Daemon,
+		"pid":     entry.PID,
+		"health":  entry.Health,
+		"project": entry.Project,
+		"binary":  entry.Binary,
+		"started": entry.Started,
+	}
 }
 
 // PIDAlive checks whether a PID is still running. Exported for use by
@@ -291,3 +876,125 @@ func intParam(c *gin.Context, name string) int {
 	v, _ := strconv.Atoi(c.Param(name))
 	return v
 }
+
+func pidFromString(value string) (int, bool) {
+	pid, err := strconv.Atoi(strings.TrimSpace(value))
+	if err != nil || pid <= 0 {
+		return 0, false
+	}
+	return pid, true
+}
+
+func parseSignal(value string) (syscall.Signal, error) {
+	trimmed := strings.TrimSpace(strings.ToUpper(value))
+	if trimmed == "" {
+		return 0, coreerr.E("ProcessProvider.parseSignal", "signal is required", nil)
+	}
+
+	if n, err := strconv.Atoi(trimmed); err == nil {
+		return syscall.Signal(n), nil
+	}
+
+	switch trimmed {
+	case "SIGTERM", "TERM":
+		return syscall.SIGTERM, nil
+	case "SIGKILL", "KILL":
+		return syscall.SIGKILL, nil
+	case "SIGINT", "INT":
+		return syscall.SIGINT, nil
+	case "SIGQUIT", "QUIT":
+		return syscall.SIGQUIT, nil
+	case "SIGHUP", "HUP":
+		return syscall.SIGHUP, nil
+	case "SIGSTOP", "STOP":
+		return syscall.SIGSTOP, nil
+	case "SIGCONT", "CONT":
+		return syscall.SIGCONT, nil
+	case "SIGUSR1", "USR1":
+		return syscall.SIGUSR1, nil
+	case "SIGUSR2", "USR2":
+		return syscall.SIGUSR2, nil
+	default:
+		return 0, coreerr.E("ProcessProvider.parseSignal", "unsupported signal", nil)
+	}
+}
+
+func (p *ProcessProvider) registerProcessEvents() {
+	if p == nil || p.hub == nil || p.service == nil {
+		return
+	}
+
+	coreApp := p.service.Core()
+	if coreApp == nil {
+		return
+	}
+
+	p.actions.Do(func() {
+		coreApp.RegisterAction(func(_ *core.Core, msg core.Message) core.Result {
+			p.forwardProcessEvent(msg)
+			return core.Result{OK: true}
+		})
+	})
+}
+
+func (p *ProcessProvider) forwardProcessEvent(msg core.Message) {
+	switch m := msg.(type) {
+	case process.ActionProcessStarted:
+		payload := p.processEventPayload(m.ID)
+		payload["id"] = m.ID
+		payload["command"] = m.Command
+		payload["args"] = append([]string(nil), m.Args...)
+		payload["dir"] = m.Dir
+		payload["pid"] = m.PID
+		if _, ok := payload["startedAt"]; !ok {
+			payload["startedAt"] = time.Now().UTC()
+		}
+		p.emitEvent("process.started", payload)
+	case process.ActionProcessOutput:
+		p.emitEvent("process.output", map[string]any{
+			"id":     m.ID,
+			"line":   m.Line,
+			"stream": m.Stream,
+		})
+	case process.ActionProcessExited:
+		payload := p.processEventPayload(m.ID)
+		payload["id"] = m.ID
+		payload["exitCode"] = m.ExitCode
+		payload["duration"] = m.Duration
+		if m.Error != nil {
+			payload["error"] = m.Error.Error()
+		}
+		p.emitEvent("process.exited", payload)
+	case process.ActionProcessKilled:
+		payload := p.processEventPayload(m.ID)
+		payload["id"] = m.ID
+		payload["signal"] = m.Signal
+		payload["exitCode"] = -1
+		p.emitEvent("process.killed", payload)
+	}
+}
+
+func (p *ProcessProvider) processEventPayload(id string) map[string]any {
+	if p == nil || p.service == nil || id == "" {
+		return map[string]any{}
+	}
+
+	proc, err := p.service.Get(id)
+	if err != nil {
+		return map[string]any{}
+	}
+
+	info := proc.Info()
+	return map[string]any{
+		"id":        info.ID,
+		"command":   info.Command,
+		"args":      append([]string(nil), info.Args...),
+		"dir":       info.Dir,
+		"startedAt": info.StartedAt,
+		"running":   info.Running,
+		"status":    info.Status,
+		"exitCode":  info.ExitCode,
+		"duration":  info.Duration,
+		"pid":       info.PID,
+	}
+}

pkg/api/provider_test.go

@@ -3,15 +3,24 @@
 package api_test
 
 import (
+	"context"
+	"encoding/json"
 	"net/http"
 	"net/http/httptest"
 	"os"
+	"os/exec"
+	"strconv"
+	"strings"
 	"testing"
+	"time"
 
+	core "dappco.re/go/core"
+	goapi "dappco.re/go/core/api"
 	process "dappco.re/go/core/process"
 	processapi "dappco.re/go/core/process/pkg/api"
-	goapi "forge.lthn.ai/core/api"
+	corews "dappco.re/go/core/ws"
 	"github.com/gin-gonic/gin"
+	"github.com/gorilla/websocket"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -21,17 +30,17 @@ func init() {
 }
 
 func TestProcessProvider_Name_Good(t *testing.T) {
-	p := processapi.NewProvider(nil, nil)
+	p := processapi.NewProvider(nil, nil, nil)
 	assert.Equal(t, "process", p.Name())
 }
 
 func TestProcessProvider_BasePath_Good(t *testing.T) {
-	p := processapi.NewProvider(nil, nil)
+	p := processapi.NewProvider(nil, nil, nil)
 	assert.Equal(t, "/api/process", p.BasePath())
 }
 
 func TestProcessProvider_Channels_Good(t *testing.T) {
-	p := processapi.NewProvider(nil, nil)
+	p := processapi.NewProvider(nil, nil, nil)
 	channels := p.Channels()
 	assert.Contains(t, channels, "process.daemon.started")
 	assert.Contains(t, channels, "process.daemon.stopped")
@@ -39,9 +48,9 @@ func TestProcessProvider_Channels_Good(t *testing.T) {
 }
 
 func TestProcessProvider_Describe_Good(t *testing.T) {
-	p := processapi.NewProvider(nil, nil)
+	p := processapi.NewProvider(nil, nil, nil)
 	descs := p.Describe()
-	assert.GreaterOrEqual(t, len(descs), 4)
+	assert.GreaterOrEqual(t, len(descs), 5)
 
 	// Verify all descriptions have required fields
 	for _, d := range descs {
@@ -51,20 +60,25 @@ func TestProcessProvider_Describe_Good(t *testing.T) {
 		assert.NotEmpty(t, d.Tags)
 	}
 
+	foundPipelineRoute := false
+	foundSignalRoute := false
 	for _, d := range descs {
-		if d.Path == "/daemons/:code/:daemon/health" {
+		if d.Method == "POST" && d.Path == "/pipelines/run" {
-			props, ok := d.Response["properties"].(map[string]any)
+			foundPipelineRoute = true
-			require.True(t, ok)
+		}
-			assert.Contains(t, props, "reason")
+		if d.Method == "POST" && d.Path == "/processes/:id/signal" {
+			foundSignalRoute = true
 		}
 	}
+	assert.True(t, foundPipelineRoute, "pipeline route should be described")
+	assert.True(t, foundSignalRoute, "signal route should be described")
 }
 
 func TestProcessProvider_ListDaemons_Good(t *testing.T) {
 	// Use a temp directory so the registry has no daemons
 	dir := t.TempDir()
 	registry := newTestRegistry(dir)
-	p := processapi.NewProvider(registry, nil)
+	p := processapi.NewProvider(registry, nil, nil)
 
 	r := setupRouter(p)
 	w := httptest.NewRecorder()
@@ -73,14 +87,58 @@ func TestProcessProvider_ListDaemons_Good(t *testing.T) {
 
 	assert.Equal(t, http.StatusOK, w.Code)
 
-	body := w.Body.String()
+	var resp goapi.Response[[]any]
-	assert.NotEmpty(t, body)
+	err := json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	assert.True(t, resp.Success)
+}
+
+func TestProcessProvider_ListDaemons_BroadcastsStarted_Good(t *testing.T) {
+	dir := t.TempDir()
+	registry := newTestRegistry(dir)
+	require.NoError(t, registry.Register(process.DaemonEntry{
+		Code:   "test",
+		Daemon: "serve",
+		PID:    os.Getpid(),
+	}))
+
+	hub := corews.NewHub()
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+	go hub.Run(ctx)
+
+	p := processapi.NewProvider(registry, nil, hub)
+	server := httptest.NewServer(hub.Handler())
+	defer server.Close()
+
+	conn := connectWS(t, server.URL)
+	defer conn.Close()
+
+	require.Eventually(t, func() bool {
+		return hub.ClientCount() == 1
+	}, time.Second, 10*time.Millisecond)
+
+	r := setupRouter(p)
+	w := httptest.NewRecorder()
+	req, _ := http.NewRequest("GET", "/api/process/daemons", nil)
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	events := readWSEvents(t, conn, "process.daemon.started")
+	started := events["process.daemon.started"]
+	require.NotNil(t, started)
+
+	startedData := started.Data.(map[string]any)
+	assert.Equal(t, "test", startedData["code"])
+	assert.Equal(t, "serve", startedData["daemon"])
+	assert.Equal(t, float64(os.Getpid()), startedData["pid"])
 }
 
 func TestProcessProvider_GetDaemon_Bad(t *testing.T) {
 	dir := t.TempDir()
 	registry := newTestRegistry(dir)
-	p := processapi.NewProvider(registry, nil)
+	p := processapi.NewProvider(registry, nil, nil)
 
 	r := setupRouter(p)
 	w := httptest.NewRecorder()
@@ -90,29 +148,45 @@ func TestProcessProvider_GetDaemon_Bad(t *testing.T) {
 	assert.Equal(t, http.StatusNotFound, w.Code)
 }
 
-func TestProcessProvider_HealthCheck_NoEndpoint_Good(t *testing.T) {
+func TestProcessProvider_HealthCheck_Bad(t *testing.T) {
 	dir := t.TempDir()
 	registry := newTestRegistry(dir)
+
+	healthSrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusServiceUnavailable)
+		_, _ = w.Write([]byte("upstream health check failed"))
+	}))
+	defer healthSrv.Close()
+
+	hostPort := strings.TrimPrefix(healthSrv.URL, "http://")
 	require.NoError(t, registry.Register(process.DaemonEntry{
 		Code:   "test",
-		Daemon: "nohealth",
+		Daemon: "broken",
 		PID:    os.Getpid(),
+		Health: hostPort,
 	}))
 
-	p := processapi.NewProvider(registry, nil)
+	p := processapi.NewProvider(registry, nil, nil)
 
 	r := setupRouter(p)
 	w := httptest.NewRecorder()
-	req, _ := http.NewRequest("GET", "/api/process/daemons/test/nohealth/health", nil)
+	req, _ := http.NewRequest("GET", "/api/process/daemons/test/broken/health", nil)
 	r.ServeHTTP(w, req)
 
-	assert.Equal(t, http.StatusOK, w.Code)
+	assert.Equal(t, http.StatusServiceUnavailable, w.Code)
-	assert.Contains(t, w.Body.String(), "no health endpoint configured")
+
-	assert.Contains(t, w.Body.String(), "\"reason\"")
+	var resp goapi.Response[map[string]any]
+	err := json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	require.True(t, resp.Success)
+
+	assert.Equal(t, false, resp.Data["healthy"])
+	assert.Equal(t, hostPort, resp.Data["address"])
+	assert.Equal(t, "upstream health check failed", resp.Data["reason"])
 }
 
 func TestProcessProvider_RegistersAsRouteGroup_Good(t *testing.T) {
-	p := processapi.NewProvider(nil, nil)
+	p := processapi.NewProvider(nil, nil, nil)
 
 	engine, err := goapi.New()
 	require.NoError(t, err)
@@ -122,8 +196,8 @@ func TestProcessProvider_RegistersAsRouteGroup_Good(t *testing.T) {
 	assert.Equal(t, "process", engine.Groups()[0].Name())
 }
 
-func TestProcessProvider_StreamGroup_Good(t *testing.T) {
+func TestProcessProvider_Channels_RegisterAsStreamGroup_Good(t *testing.T) {
-	p := processapi.NewProvider(nil, nil)
+	p := processapi.NewProvider(nil, nil, nil)
 
 	engine, err := goapi.New()
 	require.NoError(t, err)
@@ -135,6 +209,600 @@ func TestProcessProvider_StreamGroup_Good(t *testing.T) {
 	assert.Contains(t, channels, "process.daemon.started")
 }
 
+func TestProcessProvider_RunPipeline_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	p := processapi.NewProvider(nil, svc, nil)
+
+	r := setupRouter(p)
+	w := httptest.NewRecorder()
+
+	body := strings.NewReader(`{
+		"mode": "parallel",
+		"specs": [
+			{"name": "first", "command": "echo", "args": ["1"]},
+			{"name": "second", "command": "echo", "args": ["2"]}
+		]
+	}`)
+	req, err := http.NewRequest("POST", "/api/process/pipelines/run", body)
+	require.NoError(t, err)
+	req.Header.Set("Content-Type", "application/json")
+
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var resp goapi.Response[process.RunAllResult]
+	err = json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	assert.True(t, resp.Success)
+	assert.Equal(t, 2, resp.Data.Passed)
+	assert.Len(t, resp.Data.Results, 2)
+}
+
+func TestProcessProvider_RunPipeline_Unavailable(t *testing.T) {
+	p := processapi.NewProvider(nil, nil, nil)
+
+	r := setupRouter(p)
+	w := httptest.NewRecorder()
+
+	req, err := http.NewRequest("POST", "/api/process/pipelines/run", strings.NewReader(`{"mode":"all","specs":[]}`))
+	require.NoError(t, err)
+	req.Header.Set("Content-Type", "application/json")
+
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusServiceUnavailable, w.Code)
+}
+
+func TestProcessProvider_ListProcesses_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	proc, err := svc.Start(context.Background(), "echo", "hello-api")
+	require.NoError(t, err)
+	<-proc.Done()
+
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+	w := httptest.NewRecorder()
+
+	req, err := http.NewRequest("GET", "/api/process/processes", nil)
+	require.NoError(t, err)
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var resp goapi.Response[[]process.Info]
+	err = json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	require.True(t, resp.Success)
+	require.Len(t, resp.Data, 1)
+	assert.Equal(t, proc.ID, resp.Data[0].ID)
+	assert.Equal(t, "echo", resp.Data[0].Command)
+}
+
+func TestProcessProvider_ListProcesses_RunningOnly_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+
+	runningProc, err := svc.Start(context.Background(), "sleep", "60")
+	require.NoError(t, err)
+
+	exitedProc, err := svc.Start(context.Background(), "echo", "done")
+	require.NoError(t, err)
+	<-exitedProc.Done()
+
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+	w := httptest.NewRecorder()
+
+	req, err := http.NewRequest("GET", "/api/process/processes?runningOnly=true", nil)
+	require.NoError(t, err)
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var resp goapi.Response[[]process.Info]
+	err = json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	require.True(t, resp.Success)
+	require.Len(t, resp.Data, 1)
+	assert.Equal(t, runningProc.ID, resp.Data[0].ID)
+	assert.Equal(t, process.StatusRunning, resp.Data[0].Status)
+
+	require.NoError(t, svc.Kill(runningProc.ID))
+	<-runningProc.Done()
+}
+
+func TestProcessProvider_StartProcess_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+
+	body := strings.NewReader(`{
+		"command": "sleep",
+		"args": ["60"],
+		"detach": true,
+		"killGroup": true
+	}`)
+	req, err := http.NewRequest("POST", "/api/process/processes", body)
+	require.NoError(t, err)
+	req.Header.Set("Content-Type", "application/json")
+
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var resp goapi.Response[process.Info]
+	err = json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	require.True(t, resp.Success)
+	assert.Equal(t, "sleep", resp.Data.Command)
+	assert.Equal(t, process.StatusRunning, resp.Data.Status)
+	assert.True(t, resp.Data.Running)
+	assert.NotEmpty(t, resp.Data.ID)
+
+	managed, err := svc.Get(resp.Data.ID)
+	require.NoError(t, err)
+	require.NoError(t, svc.Kill(managed.ID))
+	select {
+	case <-managed.Done():
+	case <-time.After(5 * time.Second):
+		t.Fatal("process should have been killed after start test")
+	}
+}
+
+func TestProcessProvider_RunProcess_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+
+	body := strings.NewReader(`{
+		"command": "echo",
+		"args": ["run-check"]
+	}`)
+	req, err := http.NewRequest("POST", "/api/process/processes/run", body)
+	require.NoError(t, err)
+	req.Header.Set("Content-Type", "application/json")
+
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var resp goapi.Response[string]
+	err = json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	require.True(t, resp.Success)
+	assert.Contains(t, resp.Data, "run-check")
+}
+
+func TestProcessProvider_GetProcess_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	proc, err := svc.Start(context.Background(), "echo", "single")
+	require.NoError(t, err)
+	<-proc.Done()
+
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+	w := httptest.NewRecorder()
+
+	req, err := http.NewRequest("GET", "/api/process/processes/"+proc.ID, nil)
+	require.NoError(t, err)
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var resp goapi.Response[process.Info]
+	err = json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	require.True(t, resp.Success)
+	assert.Equal(t, proc.ID, resp.Data.ID)
+	assert.Equal(t, "echo", resp.Data.Command)
+}
+
+func TestProcessProvider_GetProcessOutput_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	proc, err := svc.Start(context.Background(), "echo", "output-check")
+	require.NoError(t, err)
+	<-proc.Done()
+
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+	w := httptest.NewRecorder()
+
+	req, err := http.NewRequest("GET", "/api/process/processes/"+proc.ID+"/output", nil)
+	require.NoError(t, err)
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var resp goapi.Response[string]
+	err = json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	require.True(t, resp.Success)
+	assert.Contains(t, resp.Data, "output-check")
+}
+
+func TestProcessProvider_WaitProcess_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	proc, err := svc.Start(context.Background(), "echo", "wait-check")
+	require.NoError(t, err)
+
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+	w := httptest.NewRecorder()
+
+	req, err := http.NewRequest("POST", "/api/process/processes/"+proc.ID+"/wait", nil)
+	require.NoError(t, err)
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var resp goapi.Response[process.Info]
+	err = json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	require.True(t, resp.Success)
+	assert.Equal(t, proc.ID, resp.Data.ID)
+	assert.Equal(t, process.StatusExited, resp.Data.Status)
+	assert.Equal(t, 0, resp.Data.ExitCode)
+}
+
+func TestProcessProvider_WaitProcess_NonZeroExit_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	proc, err := svc.Start(context.Background(), "sh", "-c", "exit 7")
+	require.NoError(t, err)
+
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+	w := httptest.NewRecorder()
+
+	req, err := http.NewRequest("POST", "/api/process/processes/"+proc.ID+"/wait", nil)
+	require.NoError(t, err)
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusConflict, w.Code)
+
+	var resp goapi.Response[any]
+	err = json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	require.False(t, resp.Success)
+	require.NotNil(t, resp.Error)
+	assert.Equal(t, "wait_failed", resp.Error.Code)
+	assert.Contains(t, resp.Error.Message, "process exited with code 7")
+
+	details, ok := resp.Error.Details.(map[string]any)
+	require.True(t, ok)
+	assert.Equal(t, "exited", details["status"])
+	assert.Equal(t, float64(7), details["exitCode"])
+	assert.Equal(t, proc.ID, details["id"])
+}
+
+func TestProcessProvider_InputAndCloseStdin_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	proc, err := svc.Start(context.Background(), "cat")
+	require.NoError(t, err)
+
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+
+	inputReq := strings.NewReader("{\"input\":\"hello-api\\n\"}")
+	inputHTTPReq, err := http.NewRequest("POST", "/api/process/processes/"+proc.ID+"/input", inputReq)
+	require.NoError(t, err)
+	inputHTTPReq.Header.Set("Content-Type", "application/json")
+
+	inputResp := httptest.NewRecorder()
+	r.ServeHTTP(inputResp, inputHTTPReq)
+
+	assert.Equal(t, http.StatusOK, inputResp.Code)
+
+	closeReq, err := http.NewRequest("POST", "/api/process/processes/"+proc.ID+"/close-stdin", nil)
+	require.NoError(t, err)
+
+	closeResp := httptest.NewRecorder()
+	r.ServeHTTP(closeResp, closeReq)
+
+	assert.Equal(t, http.StatusOK, closeResp.Code)
+
+	select {
+	case <-proc.Done():
+	case <-time.After(5 * time.Second):
+		t.Fatal("process should have exited after stdin was closed")
+	}
+
+	assert.Contains(t, proc.Output(), "hello-api")
+}
+
+func TestProcessProvider_KillProcess_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	proc, err := svc.Start(context.Background(), "sleep", "60")
+	require.NoError(t, err)
+
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+	w := httptest.NewRecorder()
+
+	req, err := http.NewRequest("POST", "/api/process/processes/"+proc.ID+"/kill", nil)
+	require.NoError(t, err)
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var resp goapi.Response[map[string]any]
+	err = json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	require.True(t, resp.Success)
+	assert.Equal(t, true, resp.Data["killed"])
+
+	select {
+	case <-proc.Done():
+	case <-time.After(5 * time.Second):
+		t.Fatal("process should have been killed")
+	}
+	assert.Equal(t, process.StatusKilled, proc.Status)
+}
+
+func TestProcessProvider_KillProcess_ByPID_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+
+	cmd := exec.Command("sleep", "60")
+	require.NoError(t, cmd.Start())
+
+	waitCh := make(chan error, 1)
+	go func() {
+		waitCh <- cmd.Wait()
+	}()
+
+	t.Cleanup(func() {
+		if cmd.ProcessState == nil && cmd.Process != nil {
+			_ = cmd.Process.Kill()
+		}
+		select {
+		case <-waitCh:
+		case <-time.After(2 * time.Second):
+		}
+	})
+
+	w := httptest.NewRecorder()
+	req, err := http.NewRequest("POST", "/api/process/processes/"+strconv.Itoa(cmd.Process.Pid)+"/kill", nil)
+	require.NoError(t, err)
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var resp goapi.Response[map[string]any]
+	err = json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	require.True(t, resp.Success)
+	assert.Equal(t, true, resp.Data["killed"])
+
+	select {
+	case err := <-waitCh:
+		require.Error(t, err)
+	case <-time.After(5 * time.Second):
+		t.Fatal("unmanaged process should have been killed by PID")
+	}
+}
+
+func TestProcessProvider_SignalProcess_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	proc, err := svc.Start(context.Background(), "sleep", "60")
+	require.NoError(t, err)
+
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+	w := httptest.NewRecorder()
+
+	req, err := http.NewRequest("POST", "/api/process/processes/"+proc.ID+"/signal", strings.NewReader(`{"signal":"SIGTERM"}`))
+	require.NoError(t, err)
+	req.Header.Set("Content-Type", "application/json")
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var resp goapi.Response[map[string]any]
+	err = json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	require.True(t, resp.Success)
+	assert.Equal(t, true, resp.Data["signalled"])
+
+	select {
+	case <-proc.Done():
+	case <-time.After(5 * time.Second):
+		t.Fatal("process should have been signalled")
+	}
+	assert.Equal(t, process.StatusKilled, proc.Status)
+}
+
+func TestProcessProvider_SignalProcess_ByPID_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+
+	cmd := exec.Command("sleep", "60")
+	require.NoError(t, cmd.Start())
+
+	waitCh := make(chan error, 1)
+	go func() {
+		waitCh <- cmd.Wait()
+	}()
+
+	t.Cleanup(func() {
+		if cmd.ProcessState == nil && cmd.Process != nil {
+			_ = cmd.Process.Kill()
+		}
+		select {
+		case <-waitCh:
+		case <-time.After(2 * time.Second):
+		}
+	})
+
+	w := httptest.NewRecorder()
+	req, err := http.NewRequest("POST", "/api/process/processes/"+strconv.Itoa(cmd.Process.Pid)+"/signal", strings.NewReader(`{"signal":"SIGTERM"}`))
+	require.NoError(t, err)
+	req.Header.Set("Content-Type", "application/json")
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var resp goapi.Response[map[string]any]
+	err = json.Unmarshal(w.Body.Bytes(), &resp)
+	require.NoError(t, err)
+	require.True(t, resp.Success)
+	assert.Equal(t, true, resp.Data["signalled"])
+
+	select {
+	case err := <-waitCh:
+		require.Error(t, err)
+	case <-time.After(5 * time.Second):
+		t.Fatal("unmanaged process should have been signalled by PID")
+	}
+}
+
+func TestProcessProvider_SignalProcess_InvalidSignal_Bad(t *testing.T) {
+	svc := newTestProcessService(t)
+	proc, err := svc.Start(context.Background(), "sleep", "60")
+	require.NoError(t, err)
+
+	p := processapi.NewProvider(nil, svc, nil)
+	r := setupRouter(p)
+	w := httptest.NewRecorder()
+
+	req, err := http.NewRequest("POST", "/api/process/processes/"+proc.ID+"/signal", strings.NewReader(`{"signal":"NOPE"}`))
+	require.NoError(t, err)
+	req.Header.Set("Content-Type", "application/json")
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusBadRequest, w.Code)
+	assert.True(t, proc.IsRunning())
+
+	require.NoError(t, svc.Kill(proc.ID))
+	<-proc.Done()
+}
+
+func TestProcessProvider_BroadcastsProcessEvents_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	hub := corews.NewHub()
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+	go hub.Run(ctx)
+
+	_ = processapi.NewProvider(nil, svc, hub)
+
+	server := httptest.NewServer(hub.Handler())
+	defer server.Close()
+
+	conn := connectWS(t, server.URL)
+	defer conn.Close()
+
+	require.Eventually(t, func() bool {
+		return hub.ClientCount() == 1
+	}, time.Second, 10*time.Millisecond)
+
+	proc, err := svc.Start(context.Background(), "sh", "-c", "echo live-event")
+	require.NoError(t, err)
+	<-proc.Done()
+
+	events := readWSEvents(t, conn, "process.started", "process.output", "process.exited")
+
+	started := events["process.started"]
+	require.NotNil(t, started)
+	startedData := started.Data.(map[string]any)
+	assert.Equal(t, proc.ID, startedData["id"])
+	assert.Equal(t, "sh", startedData["command"])
+	assert.Equal(t, float64(proc.Info().PID), startedData["pid"])
+
+	output := events["process.output"]
+	require.NotNil(t, output)
+	outputData := output.Data.(map[string]any)
+	assert.Equal(t, proc.ID, outputData["id"])
+	assert.Equal(t, "stdout", outputData["stream"])
+	assert.Contains(t, outputData["line"], "live-event")
+
+	exited := events["process.exited"]
+	require.NotNil(t, exited)
+	exitedData := exited.Data.(map[string]any)
+	assert.Equal(t, proc.ID, exitedData["id"])
+	assert.Equal(t, float64(0), exitedData["exitCode"])
+}
+
+func TestProcessProvider_BroadcastsKilledEvents_Good(t *testing.T) {
+	svc := newTestProcessService(t)
+	hub := corews.NewHub()
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+	go hub.Run(ctx)
+
+	_ = processapi.NewProvider(nil, svc, hub)
+
+	server := httptest.NewServer(hub.Handler())
+	defer server.Close()
+
+	conn := connectWS(t, server.URL)
+	defer conn.Close()
+
+	require.Eventually(t, func() bool {
+		return hub.ClientCount() == 1
+	}, time.Second, 10*time.Millisecond)
+
+	proc, err := svc.Start(context.Background(), "sleep", "60")
+	require.NoError(t, err)
+
+	require.NoError(t, svc.Kill(proc.ID))
+
+	select {
+	case <-proc.Done():
+	case <-time.After(2 * time.Second):
+		t.Fatal("process should have been killed")
+	}
+
+	events := readWSEvents(t, conn, "process.killed", "process.exited")
+
+	killed := events["process.killed"]
+	require.NotNil(t, killed)
+	killedData := killed.Data.(map[string]any)
+	assert.Equal(t, proc.ID, killedData["id"])
+	assert.Equal(t, "SIGKILL", killedData["signal"])
+	assert.Equal(t, float64(-1), killedData["exitCode"])
+
+	exited := events["process.exited"]
+	require.NotNil(t, exited)
+	exitedData := exited.Data.(map[string]any)
+	assert.Equal(t, proc.ID, exitedData["id"])
+	assert.Equal(t, float64(-1), exitedData["exitCode"])
+}
+
+func TestProcessProvider_ProcessRoutes_Unavailable(t *testing.T) {
+	p := processapi.NewProvider(nil, nil, nil)
+	r := setupRouter(p)
+
+	cases := []string{
+		"/api/process/processes",
+		"/api/process/processes/anything",
+		"/api/process/processes/anything/output",
+		"/api/process/processes/anything/wait",
+		"/api/process/processes/anything/input",
+		"/api/process/processes/anything/close-stdin",
+		"/api/process/processes/anything/kill",
+	}
+
+	for _, path := range cases {
+		w := httptest.NewRecorder()
+		method := "GET"
+		switch {
+		case strings.HasSuffix(path, "/kill"),
+			strings.HasSuffix(path, "/wait"),
+			strings.HasSuffix(path, "/input"),
+			strings.HasSuffix(path, "/close-stdin"):
+			method = "POST"
+		}
+		req, err := http.NewRequest(method, path, nil)
+		require.NoError(t, err)
+		r.ServeHTTP(w, req)
+		assert.Equal(t, http.StatusServiceUnavailable, w.Code)
+	}
+}
+
 // -- Test helpers -------------------------------------------------------------
 
 func setupRouter(p *processapi.ProcessProvider) *gin.Engine {
@@ -148,3 +816,58 @@ func setupRouter(p *processapi.ProcessProvider) *gin.Engine {
 func newTestRegistry(dir string) *process.Registry {
 	return process.NewRegistry(dir)
 }
+
+func newTestProcessService(t *testing.T) *process.Service {
+	t.Helper()
+
+	c := core.New()
+	factory := process.NewService(process.Options{})
+	raw, err := factory(c)
+	require.NoError(t, err)
+
+	return raw.(*process.Service)
+}
+
+func connectWS(t *testing.T, serverURL string) *websocket.Conn {
+	t.Helper()
+
+	wsURL := "ws" + strings.TrimPrefix(serverURL, "http")
+	conn, _, err := websocket.DefaultDialer.Dial(wsURL, nil)
+	require.NoError(t, err)
+	return conn
+}
+
+func readWSEvents(t *testing.T, conn *websocket.Conn, channels ...string) map[string]corews.Message {
+	t.Helper()
+
+	want := make(map[string]struct{}, len(channels))
+	for _, channel := range channels {
+		want[channel] = struct{}{}
+	}
+
+	events := make(map[string]corews.Message, len(channels))
+	deadline := time.Now().Add(3 * time.Second)
+
+	for len(events) < len(channels) && time.Now().Before(deadline) {
+		require.NoError(t, conn.SetReadDeadline(time.Now().Add(500*time.Millisecond)))
+
+		_, payload, err := conn.ReadMessage()
+		require.NoError(t, err)
+
+		for _, line := range strings.Split(strings.TrimSpace(string(payload)), "\n") {
+			if strings.TrimSpace(line) == "" {
+				continue
+			}
+
+			var msg corews.Message
+			require.NoError(t, json.Unmarshal([]byte(line), &msg))
+
+			if _, ok := want[msg.Channel]; ok {
+				events[msg.Channel] = msg
+			}
+		}
+	}
+
+	require.Len(t, events, len(channels))
+	return events
+}

process.go

@@ -2,23 +2,24 @@ package process
 
 import (
 	"context"
-	"strconv"
+	"fmt"
+	"os"
+	"os/exec"
 	"sync"
 	"syscall"
 	"time"
 
-	"dappco.re/go/core"
+	coreerr "dappco.re/go/core/log"
+	goio "io"
 )
 
-type processStdin interface {
+// ManagedProcess represents a managed external process.
-	Write(p []byte) (n int, err error)
+//
-	Close() error
+// Example:
-}
+//
-
+//	proc, err := svc.Start(ctx, "echo", "hello")
-// ManagedProcess represents a tracked external process started by the service.
 type ManagedProcess struct {
 	ID        string
-	PID       int
 	Command   string
 	Args      []string
 	Dir       string
@@ -28,28 +29,42 @@ type ManagedProcess struct {
 	ExitCode  int
 	Duration  time.Duration
 
-	cmd         *execCmd
+	cmd          *exec.Cmd
 	ctx          context.Context
 	cancel       context.CancelFunc
 	output       *RingBuffer
-	stdin       processStdin
+	stdin        goio.WriteCloser
 	done         chan struct{}
 	mu           sync.RWMutex
 	gracePeriod  time.Duration
 	killGroup    bool
-	lastSignal  string
+	killNotified bool
-	killEmitted bool
+	killSignal   string
 }
 
-// Process is kept as a compatibility alias for ManagedProcess.
+// Process is kept as an alias for ManagedProcess for compatibility.
 type Process = ManagedProcess
 
 // Info returns a snapshot of process state.
-func (p *ManagedProcess) Info() ProcessInfo {
+//
+// Example:
+//
+//	info := proc.Info()
+func (p *ManagedProcess) Info() Info {
 	p.mu.RLock()
 	defer p.mu.RUnlock()
 
-	return ProcessInfo{
+	pid := 0
+	if p.cmd != nil && p.cmd.Process != nil {
+		pid = p.cmd.Process.Pid
+	}
+
+	duration := p.Duration
+	if p.Status == StatusRunning {
+		duration = time.Since(p.StartedAt)
+	}
+
+	return Info{
 		ID:        p.ID,
 		Command:   p.Command,
 		Args:      append([]string(nil), p.Args...),
@@ -58,12 +73,16 @@ func (p *ManagedProcess) Info() ProcessInfo {
 		Running:   p.Status == StatusRunning,
 		Status:    p.Status,
 		ExitCode:  p.ExitCode,
-		Duration:  p.Duration,
+		Duration:  duration,
-		PID:       p.PID,
+		PID:       pid,
 	}
 }
 
 // Output returns the captured output as a string.
+//
+// Example:
+//
+//	fmt.Println(proc.Output())
 func (p *ManagedProcess) Output() string {
 	p.mu.RLock()
 	defer p.mu.RUnlock()
@@ -74,6 +93,10 @@ func (p *ManagedProcess) Output() string {
 }
 
 // OutputBytes returns the captured output as bytes.
+//
+// Example:
+//
+//	data := proc.OutputBytes()
 func (p *ManagedProcess) OutputBytes() []byte {
 	p.mu.RLock()
 	defer p.mu.RUnlock()
@@ -85,61 +108,95 @@ func (p *ManagedProcess) OutputBytes() []byte {
 
 // IsRunning returns true if the process is still executing.
 func (p *ManagedProcess) IsRunning() bool {
-	select {
+	p.mu.RLock()
-	case <-p.done:
+	defer p.mu.RUnlock()
-		return false
+	return p.Status == StatusRunning
-	default:
-		return true
-	}
 }
 
 // Wait blocks until the process exits.
+//
+// Example:
+//
+//	if err := proc.Wait(); err != nil { return err }
 func (p *ManagedProcess) Wait() error {
 	<-p.done
 	p.mu.RLock()
 	defer p.mu.RUnlock()
 	if p.Status == StatusFailed {
-		return core.E("process.wait", core.Concat("process failed to start: ", p.ID), nil)
+		return coreerr.E("Process.Wait", fmt.Sprintf("process failed to start: %s", p.ID), nil)
 	}
 	if p.Status == StatusKilled {
-		return core.E("process.wait", core.Concat("process was killed: ", p.ID), nil)
+		return coreerr.E("Process.Wait", fmt.Sprintf("process was killed: %s", p.ID), nil)
 	}
 	if p.ExitCode != 0 {
-		return core.E("process.wait", core.Concat("process exited with code ", strconv.Itoa(p.ExitCode)), nil)
+		return coreerr.E("Process.Wait", fmt.Sprintf("process exited with code %d", p.ExitCode), nil)
 	}
 	return nil
 }
 
 // Done returns a channel that closes when the process exits.
+//
+// Example:
+//
+//	<-proc.Done()
 func (p *ManagedProcess) Done() <-chan struct{} {
 	return p.done
 }
 
 // Kill forcefully terminates the process.
 // If KillGroup is set, kills the entire process group.
+//
+// Example:
+//
+//	_ = proc.Kill()
 func (p *ManagedProcess) Kill() error {
+	_, err := p.kill()
+	return err
+}
+
+// kill terminates the process and reports whether a signal was actually sent.
+func (p *ManagedProcess) kill() (bool, error) {
 	p.mu.Lock()
 	defer p.mu.Unlock()
 
 	if p.Status != StatusRunning {
-		return nil
+		return false, nil
 	}
 
 	if p.cmd == nil || p.cmd.Process == nil {
-		return nil
+		return false, nil
 	}
 
-	p.lastSignal = "SIGKILL"
 	if p.killGroup {
 		// Kill entire process group (negative PID)
-		return syscall.Kill(-p.cmd.Process.Pid, syscall.SIGKILL)
+		return true, syscall.Kill(-p.cmd.Process.Pid, syscall.SIGKILL)
 	}
-	return p.cmd.Process.Kill()
+	return true, p.cmd.Process.Kill()
+}
+
+// killTree forcefully terminates the process group when one exists.
+func (p *ManagedProcess) killTree() (bool, error) {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+
+	if p.Status != StatusRunning {
+		return false, nil
+	}
+
+	if p.cmd == nil || p.cmd.Process == nil {
+		return false, nil
+	}
+
+	return true, syscall.Kill(-p.cmd.Process.Pid, syscall.SIGKILL)
 }
 
 // Shutdown gracefully stops the process: SIGTERM, then SIGKILL after grace period.
 // If GracePeriod was not set (zero), falls back to immediate Kill().
 // If KillGroup is set, signals are sent to the entire process group.
+//
+// Example:
+//
+//	_ = proc.Shutdown()
 func (p *ManagedProcess) Shutdown() error {
 	p.mu.RLock()
 	grace := p.gracePeriod
@@ -180,11 +237,79 @@ func (p *ManagedProcess) terminate() error {
 	if p.killGroup {
 		pid = -pid
 	}
-	p.lastSignal = "SIGTERM"
 	return syscall.Kill(pid, syscall.SIGTERM)
 }
 
+// Signal sends a signal to the process.
+//
+// Example:
+//
+//	_ = proc.Signal(os.Interrupt)
+func (p *ManagedProcess) Signal(sig os.Signal) error {
+	p.mu.RLock()
+	status := p.Status
+	cmd := p.cmd
+	killGroup := p.killGroup
+	p.mu.RUnlock()
+
+	if status != StatusRunning {
+		return ErrProcessNotRunning
+	}
+
+	if cmd == nil || cmd.Process == nil {
+		return nil
+	}
+
+	if !killGroup {
+		return cmd.Process.Signal(sig)
+	}
+
+	sysSig, ok := sig.(syscall.Signal)
+	if !ok {
+		return cmd.Process.Signal(sig)
+	}
+
+	if sysSig == 0 {
+		return syscall.Kill(-cmd.Process.Pid, 0)
+	}
+
+	if err := syscall.Kill(-cmd.Process.Pid, sysSig); err != nil {
+		return err
+	}
+
+	// Some shells briefly ignore or defer the signal while they are still
+	// initialising child jobs. Retry a few times after short delays so the
+	// whole process group is more reliably terminated. If the requested signal
+	// still does not stop the group, escalate to SIGKILL so callers do not hang.
+	go func(pid int, sig syscall.Signal, done <-chan struct{}) {
+		ticker := time.NewTicker(100 * time.Millisecond)
+		defer ticker.Stop()
+
+		for i := 0; i < 5; i++ {
+			select {
+			case <-done:
+				return
+			case <-ticker.C:
+				_ = syscall.Kill(-pid, sig)
+			}
+		}
+
+		select {
+		case <-done:
+			return
+		default:
+			_ = syscall.Kill(-pid, syscall.SIGKILL)
+		}
+	}(cmd.Process.Pid, sysSig, p.done)
+
+	return nil
+}
+
 // SendInput writes to the process stdin.
+//
+// Example:
+//
+//	_ = proc.SendInput("hello\n")
 func (p *ManagedProcess) SendInput(input string) error {
 	p.mu.RLock()
 	defer p.mu.RUnlock()
@@ -202,6 +327,10 @@ func (p *ManagedProcess) SendInput(input string) error {
 }
 
 // CloseStdin closes the process stdin pipe.
+//
+// Example:
+//
+//	_ = proc.CloseStdin()
 func (p *ManagedProcess) CloseStdin() error {
 	p.mu.Lock()
 	defer p.mu.Unlock()
@@ -214,20 +343,3 @@ func (p *ManagedProcess) CloseStdin() error {
 	p.stdin = nil
 	return err
 }
-
-func (p *ManagedProcess) requestedSignal() string {
-	p.mu.RLock()
-	defer p.mu.RUnlock()
-	return p.lastSignal
-}
-
-func (p *ManagedProcess) markKillEmitted() bool {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-
-	if p.killEmitted {
-		return false
-	}
-	p.killEmitted = true
-	return true
-}

process_global.go

@@ -0,0 +1,306 @@
+package process
+
+import (
+	"context"
+	"os"
+	"sync"
+	"sync/atomic"
+
+	"dappco.re/go/core"
+	coreerr "dappco.re/go/core/log"
+)
+
+// Global default service used by package-level helpers.
+var (
+	defaultService atomic.Pointer[Service]
+	defaultOnce    sync.Once
+	defaultErr     error
+)
+
+// Default returns the global process service.
+// Returns nil if not initialised.
+//
+// Example:
+//
+//	svc := process.Default()
+func Default() *Service {
+	return defaultService.Load()
+}
+
+// SetDefault sets the global process service.
+// Thread-safe: can be called concurrently with Default().
+//
+// Example:
+//
+//	_ = process.SetDefault(svc)
+func SetDefault(s *Service) error {
+	if s == nil {
+		return ErrSetDefaultNil
+	}
+	defaultService.Store(s)
+	return nil
+}
+
+// Init initializes the default global service with a Core instance.
+// This is typically called during application startup.
+//
+// Example:
+//
+//	_ = process.Init(coreInstance)
+func Init(c *core.Core) error {
+	defaultOnce.Do(func() {
+		factory := NewService(Options{})
+		svc, err := factory(c)
+		if err != nil {
+			defaultErr = err
+			return
+		}
+		defaultService.Store(svc.(*Service))
+	})
+	return defaultErr
+}
+
+// Register creates a process service for Core registration.
+//
+// Example:
+//
+//	result := process.Register(coreInstance)
+func Register(c *core.Core) core.Result {
+	factory := NewService(Options{})
+	svc, err := factory(c)
+	if err != nil {
+		return core.Result{Value: err, OK: false}
+	}
+	return core.Result{Value: svc, OK: true}
+}
+
+// --- Global convenience functions ---
+
+// Start spawns a new process using the default service.
+//
+// Example:
+//
+//	proc, err := process.Start(ctx, "echo", "hello")
+func Start(ctx context.Context, command string, args ...string) (*Process, error) {
+	svc := Default()
+	if svc == nil {
+		return nil, ErrServiceNotInitialized
+	}
+	return svc.Start(ctx, command, args...)
+}
+
+// Run executes a command and waits for completion using the default service.
+//
+// Example:
+//
+//	out, err := process.Run(ctx, "echo", "hello")
+func Run(ctx context.Context, command string, args ...string) (string, error) {
+	svc := Default()
+	if svc == nil {
+		return "", ErrServiceNotInitialized
+	}
+	return svc.Run(ctx, command, args...)
+}
+
+// Get returns a process by ID from the default service.
+//
+// Example:
+//
+//	proc, err := process.Get("proc-1")
+func Get(id string) (*Process, error) {
+	svc := Default()
+	if svc == nil {
+		return nil, ErrServiceNotInitialized
+	}
+	return svc.Get(id)
+}
+
+// Output returns the captured output for a process from the default service.
+//
+// Example:
+//
+//	out, err := process.Output("proc-1")
+func Output(id string) (string, error) {
+	svc := Default()
+	if svc == nil {
+		return "", ErrServiceNotInitialized
+	}
+	return svc.Output(id)
+}
+
+// Input writes data to the stdin of a managed process using the default service.
+//
+// Example:
+//
+//	_ = process.Input("proc-1", "hello\n")
+func Input(id string, input string) error {
+	svc := Default()
+	if svc == nil {
+		return ErrServiceNotInitialized
+	}
+	return svc.Input(id, input)
+}
+
+// CloseStdin closes the stdin pipe of a managed process using the default service.
+//
+// Example:
+//
+//	_ = process.CloseStdin("proc-1")
+func CloseStdin(id string) error {
+	svc := Default()
+	if svc == nil {
+		return ErrServiceNotInitialized
+	}
+	return svc.CloseStdin(id)
+}
+
+// Wait blocks until a managed process exits and returns its final snapshot.
+//
+// Example:
+//
+//	info, err := process.Wait("proc-1")
+func Wait(id string) (Info, error) {
+	svc := Default()
+	if svc == nil {
+		return Info{}, ErrServiceNotInitialized
+	}
+	return svc.Wait(id)
+}
+
+// List returns all processes from the default service.
+//
+// Example:
+//
+//	procs := process.List()
+func List() []*Process {
+	svc := Default()
+	if svc == nil {
+		return nil
+	}
+	return svc.List()
+}
+
+// Kill terminates a process by ID using the default service.
+//
+// Example:
+//
+//	_ = process.Kill("proc-1")
+func Kill(id string) error {
+	svc := Default()
+	if svc == nil {
+		return ErrServiceNotInitialized
+	}
+	return svc.Kill(id)
+}
+
+// KillPID terminates a process by operating-system PID using the default service.
+//
+// Example:
+//
+//	_ = process.KillPID(1234)
+func KillPID(pid int) error {
+	svc := Default()
+	if svc == nil {
+		return ErrServiceNotInitialized
+	}
+	return svc.KillPID(pid)
+}
+
+// Signal sends a signal to a process by ID using the default service.
+//
+// Example:
+//
+//	_ = process.Signal("proc-1", syscall.SIGTERM)
+func Signal(id string, sig os.Signal) error {
+	svc := Default()
+	if svc == nil {
+		return ErrServiceNotInitialized
+	}
+	return svc.Signal(id, sig)
+}
+
+// SignalPID sends a signal to a process by operating-system PID using the default service.
+//
+// Example:
+//
+//	_ = process.SignalPID(1234, syscall.SIGTERM)
+func SignalPID(pid int, sig os.Signal) error {
+	svc := Default()
+	if svc == nil {
+		return ErrServiceNotInitialized
+	}
+	return svc.SignalPID(pid, sig)
+}
+
+// StartWithOptions spawns a process with full configuration using the default service.
+//
+// Example:
+//
+//	proc, err := process.StartWithOptions(ctx, process.RunOptions{Command: "pwd", Dir: "/tmp"})
+func StartWithOptions(ctx context.Context, opts RunOptions) (*Process, error) {
+	svc := Default()
+	if svc == nil {
+		return nil, ErrServiceNotInitialized
+	}
+	return svc.StartWithOptions(ctx, opts)
+}
+
+// RunWithOptions executes a command with options and waits using the default service.
+//
+// Example:
+//
+//	out, err := process.RunWithOptions(ctx, process.RunOptions{Command: "echo", Args: []string{"hello"}})
+func RunWithOptions(ctx context.Context, opts RunOptions) (string, error) {
+	svc := Default()
+	if svc == nil {
+		return "", ErrServiceNotInitialized
+	}
+	return svc.RunWithOptions(ctx, opts)
+}
+
+// Running returns all currently running processes from the default service.
+//
+// Example:
+//
+//	running := process.Running()
+func Running() []*Process {
+	svc := Default()
+	if svc == nil {
+		return nil
+	}
+	return svc.Running()
+}
+
+// Remove removes a completed process from the default service.
+//
+// Example:
+//
+//	_ = process.Remove("proc-1")
+func Remove(id string) error {
+	svc := Default()
+	if svc == nil {
+		return ErrServiceNotInitialized
+	}
+	return svc.Remove(id)
+}
+
+// Clear removes all completed processes from the default service.
+//
+// Example:
+//
+//	process.Clear()
+func Clear() {
+	svc := Default()
+	if svc == nil {
+		return
+	}
+	svc.Clear()
+}
+
+// Errors
+var (
+	// ErrServiceNotInitialized is returned when the service is not initialised.
+	ErrServiceNotInitialized = coreerr.E("", "process: service not initialized; call process.Init(core) first", nil)
+	// ErrSetDefaultNil is returned when SetDefault is called with nil.
+	ErrSetDefaultNil = coreerr.E("", "process: SetDefault called with nil service", nil)
+)

process_test.go

@@ -3,6 +3,7 @@ package process
 import (
 	"context"
 	"os"
+	"syscall"
 	"testing"
 	"time"
 
@@ -10,10 +11,13 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-func TestProcess_Info_Good(t *testing.T) {
+var _ *Process = (*ManagedProcess)(nil)
+
+func TestProcess_Info(t *testing.T) {
 	svc, _ := newTestService(t)
 
-	proc := startProc(t, svc, context.Background(), "echo", "hello")
+	proc, err := svc.Start(context.Background(), "echo", "hello")
+	require.NoError(t, err)
 
 	<-proc.Done()
 
@@ -21,13 +25,14 @@ func TestProcess_Info_Good(t *testing.T) {
 	assert.Equal(t, proc.ID, info.ID)
 	assert.Equal(t, "echo", info.Command)
 	assert.Equal(t, []string{"hello"}, info.Args)
+	assert.False(t, info.Running)
 	assert.Equal(t, StatusExited, info.Status)
 	assert.Equal(t, 0, info.ExitCode)
 	assert.Greater(t, info.Duration, time.Duration(0))
 }
 
-func TestProcess_Info_Pending_Good(t *testing.T) {
+func TestProcess_Info_Pending(t *testing.T) {
-	proc := &ManagedProcess{
+	proc := &Process{
 		ID:     "pending",
 		Status: StatusPending,
 		done:   make(chan struct{}),
@@ -38,163 +43,307 @@ func TestProcess_Info_Pending_Good(t *testing.T) {
 	assert.False(t, info.Running)
 }
 
-func TestProcess_Output_Good(t *testing.T) {
+func TestProcess_Info_RunningDuration(t *testing.T) {
+	svc, _ := newTestService(t)
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	proc, err := svc.Start(ctx, "sleep", "10")
+	require.NoError(t, err)
+
+	time.Sleep(10 * time.Millisecond)
+	info := proc.Info()
+	assert.True(t, info.Running)
+	assert.Equal(t, StatusRunning, info.Status)
+	assert.Greater(t, info.Duration, time.Duration(0))
+
+	cancel()
+	<-proc.Done()
+}
+
+func TestProcess_InfoSnapshot(t *testing.T) {
+	svc, _ := newTestService(t)
+
+	proc, err := svc.Start(context.Background(), "echo", "snapshot")
+	require.NoError(t, err)
+
+	<-proc.Done()
+
+	info := proc.Info()
+	require.NotEmpty(t, info.Args)
+
+	info.Args[0] = "mutated"
+
+	assert.Equal(t, "snapshot", proc.Args[0])
+	assert.Equal(t, "mutated", info.Args[0])
+}
+
+func TestProcess_Output(t *testing.T) {
 	t.Run("captures stdout", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		proc := startProc(t, svc, context.Background(), "echo", "hello world")
+
+		proc, err := svc.Start(context.Background(), "echo", "hello world")
+		require.NoError(t, err)
+
 		<-proc.Done()
-		assert.Contains(t, proc.Output(), "hello world")
+
+		output := proc.Output()
+		assert.Contains(t, output, "hello world")
 	})
 
 	t.Run("OutputBytes returns copy", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		proc := startProc(t, svc, context.Background(), "echo", "test")
+
+		proc, err := svc.Start(context.Background(), "echo", "test")
+		require.NoError(t, err)
+
 		<-proc.Done()
+
 		bytes := proc.OutputBytes()
 		assert.NotNil(t, bytes)
 		assert.Contains(t, string(bytes), "test")
 	})
 }
 
-func TestProcess_IsRunning_Good(t *testing.T) {
+func TestProcess_IsRunning(t *testing.T) {
 	t.Run("true while running", func(t *testing.T) {
 		svc, _ := newTestService(t)
+
 		ctx, cancel := context.WithCancel(context.Background())
 		defer cancel()
 
-		proc := startProc(t, svc, ctx, "sleep", "10")
+		proc, err := svc.Start(ctx, "sleep", "10")
+		require.NoError(t, err)
+
 		assert.True(t, proc.IsRunning())
+		assert.True(t, proc.Info().Running)
 
 		cancel()
 		<-proc.Done()
+
 		assert.False(t, proc.IsRunning())
+		assert.False(t, proc.Info().Running)
 	})
 
 	t.Run("false after completion", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		proc := startProc(t, svc, context.Background(), "echo", "done")
+
+		proc, err := svc.Start(context.Background(), "echo", "done")
+		require.NoError(t, err)
+
 		<-proc.Done()
+
 		assert.False(t, proc.IsRunning())
 	})
 }
 
-func TestProcess_Wait_Good(t *testing.T) {
+func TestProcess_Wait(t *testing.T) {
 	t.Run("returns nil on success", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		proc := startProc(t, svc, context.Background(), "echo", "ok")
+
-		err := proc.Wait()
+		proc, err := svc.Start(context.Background(), "echo", "ok")
+		require.NoError(t, err)
+
+		err = proc.Wait()
 		assert.NoError(t, err)
 	})
 
 	t.Run("returns error on failure", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		proc := startProc(t, svc, context.Background(), "sh", "-c", "exit 1")
+
-		err := proc.Wait()
+		proc, err := svc.Start(context.Background(), "sh", "-c", "exit 1")
+		require.NoError(t, err)
+
+		err = proc.Wait()
 		assert.Error(t, err)
 	})
 }
 
-func TestProcess_Done_Good(t *testing.T) {
+func TestProcess_Done(t *testing.T) {
 	t.Run("channel closes on completion", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		proc := startProc(t, svc, context.Background(), "echo", "test")
+
+		proc, err := svc.Start(context.Background(), "echo", "test")
+		require.NoError(t, err)
 
 		select {
 		case <-proc.Done():
+			// Success - channel closed
 		case <-time.After(5 * time.Second):
 			t.Fatal("Done channel should have closed")
 		}
 	})
 }
 
-func TestProcess_Kill_Good(t *testing.T) {
+func TestProcess_Kill(t *testing.T) {
 	t.Run("terminates running process", func(t *testing.T) {
 		svc, _ := newTestService(t)
+
 		ctx, cancel := context.WithCancel(context.Background())
 		defer cancel()
 
-		proc := startProc(t, svc, ctx, "sleep", "60")
+		proc, err := svc.Start(ctx, "sleep", "60")
+		require.NoError(t, err)
+
 		assert.True(t, proc.IsRunning())
 
-		err := proc.Kill()
+		err = proc.Kill()
 		assert.NoError(t, err)
 
 		select {
 		case <-proc.Done():
+			// Good - process terminated
 		case <-time.After(2 * time.Second):
 			t.Fatal("process should have been killed")
 		}
+
 		assert.Equal(t, StatusKilled, proc.Status)
-		assert.Equal(t, -1, proc.ExitCode)
 	})
 
 	t.Run("noop on completed process", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		proc := startProc(t, svc, context.Background(), "echo", "done")
+
+		proc, err := svc.Start(context.Background(), "echo", "done")
+		require.NoError(t, err)
+
 		<-proc.Done()
-		err := proc.Kill()
+
+		err = proc.Kill()
 		assert.NoError(t, err)
 	})
 }
 
-func TestProcess_SendInput_Good(t *testing.T) {
+func TestProcess_SendInput(t *testing.T) {
 	t.Run("writes to stdin", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		proc := startProc(t, svc, context.Background(), "cat")
 
-		err := proc.SendInput("hello\n")
+		// Use cat to echo back stdin
+		proc, err := svc.Start(context.Background(), "cat")
+		require.NoError(t, err)
+
+		err = proc.SendInput("hello\n")
 		assert.NoError(t, err)
+
 		err = proc.CloseStdin()
 		assert.NoError(t, err)
+
 		<-proc.Done()
+
 		assert.Contains(t, proc.Output(), "hello")
 	})
 
 	t.Run("error on completed process", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		proc := startProc(t, svc, context.Background(), "echo", "done")
+
+		proc, err := svc.Start(context.Background(), "echo", "done")
+		require.NoError(t, err)
+
 		<-proc.Done()
-		err := proc.SendInput("test")
+
+		err = proc.SendInput("test")
 		assert.ErrorIs(t, err, ErrProcessNotRunning)
 	})
 }
 
-func TestProcess_Signal_Good(t *testing.T) {
+func TestProcess_Signal(t *testing.T) {
 	t.Run("sends signal to running process", func(t *testing.T) {
 		svc, _ := newTestService(t)
+
 		ctx, cancel := context.WithCancel(context.Background())
 		defer cancel()
 
-		proc := startProc(t, svc, ctx, "sleep", "60")
+		proc, err := svc.Start(ctx, "sleep", "60")
-		err := proc.Signal(os.Interrupt)
+		require.NoError(t, err)
+
+		err = proc.Signal(os.Interrupt)
 		assert.NoError(t, err)
 
 		select {
 		case <-proc.Done():
+			// Process terminated by signal
 		case <-time.After(2 * time.Second):
 			t.Fatal("process should have been terminated by signal")
 		}
+
 		assert.Equal(t, StatusKilled, proc.Status)
 	})
 
 	t.Run("error on completed process", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		proc := startProc(t, svc, context.Background(), "echo", "done")
+
+		proc, err := svc.Start(context.Background(), "echo", "done")
+		require.NoError(t, err)
 		<-proc.Done()
-		err := proc.Signal(os.Interrupt)
+
+		err = proc.Signal(os.Interrupt)
 		assert.ErrorIs(t, err, ErrProcessNotRunning)
 	})
-}
 
-func TestProcess_CloseStdin_Good(t *testing.T) {
+	t.Run("signals process group when kill group is enabled", func(t *testing.T) {
-	t.Run("closes stdin pipe", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		proc := startProc(t, svc, context.Background(), "cat")
+
-		err := proc.CloseStdin()
+		proc, err := svc.StartWithOptions(context.Background(), RunOptions{
+			Command:   "sh",
+			Args:      []string{"-c", "trap '' INT; sh -c 'trap - INT; sleep 60' & wait"},
+			Detach:    true,
+			KillGroup: true,
+		})
+		require.NoError(t, err)
+
+		err = proc.Signal(os.Interrupt)
 		assert.NoError(t, err)
 
 		select {
 		case <-proc.Done():
+			// Good - the whole process group responded to the signal.
+		case <-time.After(5 * time.Second):
+			t.Fatal("process group should have been terminated by signal")
+		}
+	})
+
+	t.Run("signal zero only probes process group liveness", func(t *testing.T) {
+		svc, _ := newTestService(t)
+
+		proc, err := svc.StartWithOptions(context.Background(), RunOptions{
+			Command:   "sh",
+			Args:      []string{"-c", "sleep 60 & wait"},
+			Detach:    true,
+			KillGroup: true,
+		})
+		require.NoError(t, err)
+
+		err = proc.Signal(syscall.Signal(0))
+		assert.NoError(t, err)
+
+		time.Sleep(300 * time.Millisecond)
+		assert.True(t, proc.IsRunning())
+
+		err = proc.Kill()
+		assert.NoError(t, err)
+
+		select {
+		case <-proc.Done():
+		case <-time.After(5 * time.Second):
+			t.Fatal("process group should have been killed for cleanup")
+		}
+	})
+}
+
+func TestProcess_CloseStdin(t *testing.T) {
+	t.Run("closes stdin pipe", func(t *testing.T) {
+		svc, _ := newTestService(t)
+
+		proc, err := svc.Start(context.Background(), "cat")
+		require.NoError(t, err)
+
+		err = proc.CloseStdin()
+		assert.NoError(t, err)
+
+		// Process should exit now that stdin is closed
+		select {
+		case <-proc.Done():
+			// Good
 		case <-time.After(2 * time.Second):
 			t.Fatal("cat should exit when stdin is closed")
 		}
@@ -202,132 +351,156 @@ func TestProcess_CloseStdin_Good(t *testing.T) {
 
 	t.Run("double close is safe", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		proc := startProc(t, svc, context.Background(), "cat")
+
-		err := proc.CloseStdin()
+		proc, err := svc.Start(context.Background(), "cat")
+		require.NoError(t, err)
+
+		// First close
+		err = proc.CloseStdin()
 		assert.NoError(t, err)
+
 		<-proc.Done()
+
+		// Second close should be safe (stdin already nil)
 		err = proc.CloseStdin()
 		assert.NoError(t, err)
 	})
 }
 
-func TestProcess_Timeout_Good(t *testing.T) {
+func TestProcess_Timeout(t *testing.T) {
 	t.Run("kills process after timeout", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		r := svc.StartWithOptions(context.Background(), RunOptions{
+
+		proc, err := svc.StartWithOptions(context.Background(), RunOptions{
 			Command: "sleep",
 			Args:    []string{"60"},
 			Timeout: 200 * time.Millisecond,
 		})
-		require.True(t, r.OK)
+		require.NoError(t, err)
-		proc := r.Value.(*Process)
 
 		select {
 		case <-proc.Done():
+			// Good — process was killed by timeout
 		case <-time.After(5 * time.Second):
 			t.Fatal("process should have been killed by timeout")
 		}
+
 		assert.False(t, proc.IsRunning())
 		assert.Equal(t, StatusKilled, proc.Status)
 	})
 
 	t.Run("no timeout when zero", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		r := svc.StartWithOptions(context.Background(), RunOptions{
+
+		proc, err := svc.StartWithOptions(context.Background(), RunOptions{
 			Command: "echo",
 			Args:    []string{"fast"},
 			Timeout: 0,
 		})
-		require.True(t, r.OK)
+		require.NoError(t, err)
-		proc := r.Value.(*Process)
+
 		<-proc.Done()
 		assert.Equal(t, 0, proc.ExitCode)
 	})
 }
 
-func TestProcess_Shutdown_Good(t *testing.T) {
+func TestProcess_Shutdown(t *testing.T) {
 	t.Run("graceful with grace period", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		r := svc.StartWithOptions(context.Background(), RunOptions{
+
+		// Use a process that traps SIGTERM
+		proc, err := svc.StartWithOptions(context.Background(), RunOptions{
 			Command:     "sleep",
 			Args:        []string{"60"},
 			GracePeriod: 100 * time.Millisecond,
 		})
-		require.True(t, r.OK)
+		require.NoError(t, err)
-		proc := r.Value.(*Process)
 
 		assert.True(t, proc.IsRunning())
-		err := proc.Shutdown()
+
+		err = proc.Shutdown()
 		assert.NoError(t, err)
 
 		select {
 		case <-proc.Done():
+			// Good
 		case <-time.After(5 * time.Second):
 			t.Fatal("shutdown should have completed")
 		}
+
+		assert.Equal(t, StatusKilled, proc.Status)
 	})
 
 	t.Run("immediate kill without grace period", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		r := svc.StartWithOptions(context.Background(), RunOptions{
+
+		proc, err := svc.StartWithOptions(context.Background(), RunOptions{
 			Command: "sleep",
 			Args:    []string{"60"},
 		})
-		require.True(t, r.OK)
+		require.NoError(t, err)
-		proc := r.Value.(*Process)
 
-		err := proc.Shutdown()
+		err = proc.Shutdown()
 		assert.NoError(t, err)
 
 		select {
 		case <-proc.Done():
+			// Good
 		case <-time.After(2 * time.Second):
 			t.Fatal("kill should be immediate")
 		}
 	})
 }
 
-func TestProcess_KillGroup_Good(t *testing.T) {
+func TestProcess_KillGroup(t *testing.T) {
 	t.Run("kills child processes", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		r := svc.StartWithOptions(context.Background(), RunOptions{
+
+		// Spawn a parent that spawns a child — KillGroup should kill both
+		proc, err := svc.StartWithOptions(context.Background(), RunOptions{
 			Command:   "sh",
 			Args:      []string{"-c", "sleep 60 & wait"},
 			Detach:    true,
 			KillGroup: true,
 		})
-		require.True(t, r.OK)
+		require.NoError(t, err)
-		proc := r.Value.(*Process)
 
+		// Give child time to spawn
 		time.Sleep(100 * time.Millisecond)
-		err := proc.Kill()
+
+		err = proc.Kill()
 		assert.NoError(t, err)
 
 		select {
 		case <-proc.Done():
+			// Good — whole group killed
 		case <-time.After(5 * time.Second):
 			t.Fatal("process group should have been killed")
 		}
+
+		assert.Equal(t, StatusKilled, proc.Status)
 	})
 }
 
-func TestProcess_TimeoutWithGrace_Good(t *testing.T) {
+func TestProcess_TimeoutWithGrace(t *testing.T) {
 	t.Run("timeout triggers graceful shutdown", func(t *testing.T) {
 		svc, _ := newTestService(t)
-		r := svc.StartWithOptions(context.Background(), RunOptions{
+
+		proc, err := svc.StartWithOptions(context.Background(), RunOptions{
 			Command:     "sleep",
 			Args:        []string{"60"},
 			Timeout:     200 * time.Millisecond,
 			GracePeriod: 100 * time.Millisecond,
 		})
-		require.True(t, r.OK)
+		require.NoError(t, err)
-		proc := r.Value.(*Process)
 
 		select {
 		case <-proc.Done():
+			// Good — timeout + grace triggered
 		case <-time.After(5 * time.Second):
 			t.Fatal("process should have been killed by timeout")
 		}
+
 		assert.Equal(t, StatusKilled, proc.Status)
 	})
 }

program.go

@@ -3,24 +3,36 @@ package process
 import (
 	"bytes"
 	"context"
-	"path/filepath"
+	"os/exec"
-	"strconv"
+	"strings"
+	"unicode"
 
-	"dappco.re/go/core"
+	core "dappco.re/go/core"
+	coreerr "dappco.re/go/core/log"
 )
 
 // ErrProgramNotFound is returned when Find cannot locate the binary on PATH.
-// Callers may use core.Is to detect this condition.
+// Callers may use errors.Is to detect this condition.
-var ErrProgramNotFound = core.E("", "program: binary not found in PATH", nil)
+var ErrProgramNotFound = coreerr.E("", "program: binary not found in PATH", nil)
+
+// ErrProgramContextRequired is returned when Run or RunDir is called without a context.
+var ErrProgramContextRequired = coreerr.E("", "program: command context is required", nil)
+
+// ErrProgramNameRequired is returned when Run or RunDir is called without a program name.
+var ErrProgramNameRequired = coreerr.E("", "program: program name is empty", nil)
 
 // Program represents a named executable located on the system PATH.
-// Create one with a Name, call Find to resolve its path, then Run or RunDir.
 //
-//	p := &process.Program{Name: "go"}
+// Example:
+//
+//	git := &process.Program{Name: "git"}
+//	if err := git.Find(); err != nil { return err }
+//	out, err := git.Run(ctx, "status")
 type Program struct {
 	// Name is the binary name (e.g. "go", "node", "git").
 	Name string
 	// Path is the absolute path resolved by Find.
+	// Example: "/usr/bin/git"
 	// If empty, Run and RunDir fall back to Name for OS PATH resolution.
 	Path string
 }
@@ -28,20 +40,20 @@ type Program struct {
 // Find resolves the program's absolute path using exec.LookPath.
 // Returns ErrProgramNotFound (wrapped) if the binary is not on PATH.
 //
-//	err := p.Find()
+// Example:
+//
+//	if err := p.Find(); err != nil { return err }
 func (p *Program) Find() error {
-	if p.Name == "" {
+	target := p.Path
-		return core.E("program.find", "program name is empty", nil)
+	if target == "" {
+		target = p.Name
 	}
-	path, err := execLookPath(p.Name)
+	if target == "" {
+		return coreerr.E("Program.Find", "program name is empty", nil)
+	}
+	path, err := exec.LookPath(target)
 	if err != nil {
-		return core.E("program.find", core.Concat(strconv.Quote(p.Name), ": not found in PATH"), ErrProgramNotFound)
+		return coreerr.E("Program.Find", core.Sprintf("%q: not found in PATH", target), ErrProgramNotFound)
-	}
-	if !filepath.IsAbs(path) {
-		path, err = filepath.Abs(path)
-		if err != nil {
-			return core.E("program.find", core.Concat(strconv.Quote(p.Name), ": failed to resolve absolute path"), err)
-		}
 	}
 	p.Path = path
 	return nil
@@ -50,7 +62,9 @@ func (p *Program) Find() error {
 // Run executes the program with args in the current working directory.
 // Returns trimmed combined stdout+stderr output and any error.
 //
-//	out, err := p.Run(ctx, "version")
+// Example:
+//
+//	out, err := p.Run(ctx, "hello")
 func (p *Program) Run(ctx context.Context, args ...string) (string, error) {
 	return p.RunDir(ctx, "", args...)
 }
@@ -59,18 +73,25 @@ func (p *Program) Run(ctx context.Context, args ...string) (string, error) {
 // Returns trimmed combined stdout+stderr output and any error.
 // If dir is empty, the process inherits the caller's working directory.
 //
-//	out, err := p.RunDir(ctx, "/workspace", "test", "./...")
+// Example:
+//
+//	out, err := p.RunDir(ctx, "/tmp", "pwd")
 func (p *Program) RunDir(ctx context.Context, dir string, args ...string) (string, error) {
+	if ctx == nil {
+		return "", coreerr.E("Program.RunDir", "program: command context is required", ErrProgramContextRequired)
+	}
+
 	binary := p.Path
 	if binary == "" {
 		binary = p.Name
 	}
-	if ctx == nil {
+
-		ctx = context.Background()
+	if binary == "" {
+		return "", coreerr.E("Program.RunDir", "program name is empty", ErrProgramNameRequired)
 	}
 
 	var out bytes.Buffer
-	cmd := execCommandContext(ctx, binary, args...)
+	cmd := exec.CommandContext(ctx, binary, args...)
 	cmd.Stdout = &out
 	cmd.Stderr = &out
 	if dir != "" {
@@ -78,7 +99,7 @@ func (p *Program) RunDir(ctx context.Context, dir string, args ...string) (strin
 	}
 
 	if err := cmd.Run(); err != nil {
-		return string(bytes.TrimSpace(out.Bytes())), core.E("program.run", core.Concat(strconv.Quote(p.Name), ": command failed"), err)
+		return strings.TrimRightFunc(out.String(), unicode.IsSpace), coreerr.E("Program.RunDir", core.Sprintf("%q: command failed", p.Name), err)
 	}
-	return string(bytes.TrimSpace(out.Bytes())), nil
+	return strings.TrimRightFunc(out.String(), unicode.IsSpace), nil
 }

program_test.go

@@ -2,12 +2,11 @@ package process_test
 
 import (
 	"context"
-	"os"
+	"os/exec"
 	"path/filepath"
 	"testing"
 	"time"
 
-	"dappco.re/go/core"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
@@ -21,26 +20,47 @@ func testCtx(t *testing.T) context.Context {
 	return ctx
 }
 
-func TestProgram_Find_Good(t *testing.T) {
+func TestProgram_Find_KnownBinary(t *testing.T) {
 	p := &process.Program{Name: "echo"}
 	require.NoError(t, p.Find())
 	assert.NotEmpty(t, p.Path)
-	assert.True(t, filepath.IsAbs(p.Path))
 }
 
-func TestProgram_FindUnknown_Bad(t *testing.T) {
+func TestProgram_Find_UnknownBinary(t *testing.T) {
 	p := &process.Program{Name: "no-such-binary-xyzzy-42"}
 	err := p.Find()
 	require.Error(t, err)
 	assert.ErrorIs(t, err, process.ErrProgramNotFound)
 }
 
-func TestProgram_FindEmpty_Bad(t *testing.T) {
+func TestProgram_Find_UsesExistingPath(t *testing.T) {
+	path, err := exec.LookPath("echo")
+	require.NoError(t, err)
+
+	p := &process.Program{Path: path}
+	require.NoError(t, p.Find())
+	assert.Equal(t, path, p.Path)
+}
+
+func TestProgram_Find_PrefersExistingPathOverName(t *testing.T) {
+	path, err := exec.LookPath("echo")
+	require.NoError(t, err)
+
+	p := &process.Program{
+		Name: "no-such-binary-xyzzy-42",
+		Path: path,
+	}
+
+	require.NoError(t, p.Find())
+	assert.Equal(t, path, p.Path)
+}
+
+func TestProgram_Find_EmptyName(t *testing.T) {
 	p := &process.Program{}
 	require.Error(t, p.Find())
 }
 
-func TestProgram_Run_Good(t *testing.T) {
+func TestProgram_Run_ReturnsOutput(t *testing.T) {
 	p := &process.Program{Name: "echo"}
 	require.NoError(t, p.Find())
 
@@ -49,7 +69,16 @@ func TestProgram_Run_Good(t *testing.T) {
 	assert.Equal(t, "hello", out)
 }
 
-func TestProgram_RunFallback_Good(t *testing.T) {
+func TestProgram_Run_PreservesLeadingWhitespace(t *testing.T) {
+	p := &process.Program{Name: "sh"}
+	require.NoError(t, p.Find())
+
+	out, err := p.Run(testCtx(t), "-c", "printf '  hello  \n'")
+	require.NoError(t, err)
+	assert.Equal(t, "  hello", out)
+}
+
+func TestProgram_Run_WithoutFind_FallsBackToName(t *testing.T) {
 	// Path is empty; RunDir should fall back to Name for OS PATH resolution.
 	p := &process.Program{Name: "echo"}
 
@@ -58,15 +87,7 @@ func TestProgram_RunFallback_Good(t *testing.T) {
 	assert.Equal(t, "fallback", out)
 }
 
-func TestProgram_RunNilContext_Good(t *testing.T) {
+func TestProgram_RunDir_UsesDirectory(t *testing.T) {
-	p := &process.Program{Name: "echo"}
-
-	out, err := p.Run(nil, "nil-context")
-	require.NoError(t, err)
-	assert.Equal(t, "nil-context", out)
-}
-
-func TestProgram_RunDir_Good(t *testing.T) {
 	p := &process.Program{Name: "pwd"}
 	require.NoError(t, p.Find())
 
@@ -74,17 +95,34 @@ func TestProgram_RunDir_Good(t *testing.T) {
 
 	out, err := p.RunDir(testCtx(t), dir)
 	require.NoError(t, err)
-	dirInfo, err := os.Stat(dir)
+	// Resolve symlinks on both sides for portability (macOS uses /private/ prefix).
+	canonicalDir, err := filepath.EvalSymlinks(dir)
 	require.NoError(t, err)
-	outInfo, err := os.Stat(core.Trim(out))
+	canonicalOut, err := filepath.EvalSymlinks(out)
 	require.NoError(t, err)
-	assert.True(t, os.SameFile(dirInfo, outInfo))
+	assert.Equal(t, canonicalDir, canonicalOut)
 }
 
-func TestProgram_RunFailure_Bad(t *testing.T) {
+func TestProgram_Run_FailingCommand(t *testing.T) {
 	p := &process.Program{Name: "false"}
 	require.NoError(t, p.Find())
 
 	_, err := p.Run(testCtx(t))
 	require.Error(t, err)
 }
+
+func TestProgram_Run_NilContextRejected(t *testing.T) {
+	p := &process.Program{Name: "echo"}
+
+	_, err := p.Run(nil, "test")
+	require.Error(t, err)
+	assert.ErrorIs(t, err, process.ErrProgramContextRequired)
+}
+
+func TestProgram_RunDir_EmptyNameRejected(t *testing.T) {
+	p := &process.Program{}
+
+	_, err := p.RunDir(testCtx(t), "", "test")
+	require.Error(t, err)
+	assert.ErrorIs(t, err, process.ErrProgramNameRequired)
+}

registry.go

@@ -1,18 +1,23 @@
 package process
 
 import (
-	"path"
+	"encoding/json"
-	"strconv"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
 	"syscall"
 	"time"
 
-	"dappco.re/go/core"
 	coreio "dappco.re/go/core/io"
+	coreerr "dappco.re/go/core/log"
 )
 
 // DaemonEntry records a running daemon in the registry.
 //
-//	entry := process.DaemonEntry{Code: "myapp", Daemon: "serve", PID: 1234}
+// Example:
+//
+//	entry := process.DaemonEntry{Code: "app", Daemon: "serve", PID: os.Getpid()}
 type DaemonEntry struct {
 	Code    string    `json:"code"`
 	Daemon  string    `json:"daemon"`
@@ -24,63 +29,80 @@ type DaemonEntry struct {
 }
 
 // Registry tracks running daemons via JSON files in a directory.
-//
-//	reg := process.NewRegistry("/tmp/process-daemons")
 type Registry struct {
 	dir string
 }
 
 // NewRegistry creates a registry backed by the given directory.
 //
-//	reg := process.NewRegistry("/tmp/process-daemons")
+// Example:
+//
+//	reg := process.NewRegistry("/tmp/daemons")
 func NewRegistry(dir string) *Registry {
 	return &Registry{dir: dir}
 }
 
 // DefaultRegistry returns a registry using ~/.core/daemons/.
 //
+// Example:
+//
 //	reg := process.DefaultRegistry()
 func DefaultRegistry() *Registry {
-	home, err := userHomeDir()
+	home, err := os.UserHomeDir()
 	if err != nil {
-		home = tempDir()
+		home = os.TempDir()
 	}
-	return NewRegistry(path.Join(home, ".core", "daemons"))
+	return NewRegistry(filepath.Join(home, ".core", "daemons"))
 }
 
 // Register writes a daemon entry to the registry directory.
 // If Started is zero, it is set to the current time.
 // The directory is created if it does not exist.
+//
+// Example:
+//
+//	_ = reg.Register(entry)
 func (r *Registry) Register(entry DaemonEntry) error {
 	if entry.Started.IsZero() {
 		entry.Started = time.Now()
 	}
 
 	if err := coreio.Local.EnsureDir(r.dir); err != nil {
-		return core.E("registry.register", "failed to create registry directory", err)
+		return coreerr.E("Registry.Register", "failed to create registry directory", err)
 	}
 
-	data, err := marshalDaemonEntry(entry)
+	data, err := json.MarshalIndent(entry, "", "  ")
 	if err != nil {
-		return core.E("registry.register", "failed to marshal entry", err)
+		return coreerr.E("Registry.Register", "failed to marshal entry", err)
 	}
 
-	if err := coreio.Local.Write(r.entryPath(entry.Code, entry.Daemon), data); err != nil {
+	if err := coreio.Local.Write(r.entryPath(entry.Code, entry.Daemon), string(data)); err != nil {
-		return core.E("registry.register", "failed to write entry file", err)
+		return coreerr.E("Registry.Register", "failed to write entry file", err)
 	}
 	return nil
 }
 
 // Unregister removes a daemon entry from the registry.
+//
+// Example:
+//
+//	_ = reg.Unregister("app", "serve")
 func (r *Registry) Unregister(code, daemon string) error {
 	if err := coreio.Local.Delete(r.entryPath(code, daemon)); err != nil {
-		return core.E("registry.unregister", "failed to delete entry file", err)
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return coreerr.E("Registry.Unregister", "failed to delete entry file", err)
 	}
 	return nil
 }
 
 // Get reads a single daemon entry and checks whether its process is alive.
 // If the process is dead, the stale file is removed and (nil, false) is returned.
+//
+// Example:
+//
+//	entry, ok := reg.Get("app", "serve")
 func (r *Registry) Get(code, daemon string) (*DaemonEntry, bool) {
 	path := r.entryPath(code, daemon)
 
@@ -89,8 +111,8 @@ func (r *Registry) Get(code, daemon string) (*DaemonEntry, bool) {
 		return nil, false
 	}
 
-	entry, err := unmarshalDaemonEntry(data)
+	var entry DaemonEntry
-	if err != nil {
+	if err := json.Unmarshal([]byte(data), &entry); err != nil {
 		_ = coreio.Local.Delete(path)
 		return nil, false
 	}
@@ -104,29 +126,25 @@ func (r *Registry) Get(code, daemon string) (*DaemonEntry, bool) {
 }
 
 // List returns all alive daemon entries, pruning any with dead PIDs.
+//
+// Example:
+//
+//	entries, err := reg.List()
 func (r *Registry) List() ([]DaemonEntry, error) {
-	if !coreio.Local.Exists(r.dir) {
+	matches, err := filepath.Glob(filepath.Join(r.dir, "*.json"))
-		return nil, nil
-	}
-
-	entries, err := coreio.Local.List(r.dir)
 	if err != nil {
-		return nil, core.E("registry.list", "failed to list registry directory", err)
+		return nil, err
 	}
 
 	var alive []DaemonEntry
-	for _, entryFile := range entries {
+	for _, path := range matches {
-		if entryFile.IsDir() || !core.HasSuffix(entryFile.Name(), ".json") {
-			continue
-		}
-		path := path.Join(r.dir, entryFile.Name())
 		data, err := coreio.Local.Read(path)
 		if err != nil {
 			continue
 		}
 
-		entry, err := unmarshalDaemonEntry(data)
+		var entry DaemonEntry
-		if err != nil {
+		if err := json.Unmarshal([]byte(data), &entry); err != nil {
 			_ = coreio.Local.Delete(path)
 			continue
 		}
@@ -139,13 +157,23 @@ func (r *Registry) List() ([]DaemonEntry, error) {
 		alive = append(alive, entry)
 	}
 
+	sort.Slice(alive, func(i, j int) bool {
+		if alive[i].Started.Equal(alive[j].Started) {
+			if alive[i].Code == alive[j].Code {
+				return alive[i].Daemon < alive[j].Daemon
+			}
+			return alive[i].Code < alive[j].Code
+		}
+		return alive[i].Started.Before(alive[j].Started)
+	})
+
 	return alive, nil
 }
 
 // entryPath returns the filesystem path for a daemon entry.
 func (r *Registry) entryPath(code, daemon string) string {
-	name := sanitizeRegistryComponent(code) + "-" + sanitizeRegistryComponent(daemon) + ".json"
+	name := strings.ReplaceAll(code, "/", "-") + "-" + strings.ReplaceAll(daemon, "/", "-") + ".json"
-	return path.Join(r.dir, name)
+	return filepath.Join(r.dir, name)
 }
 
 // isAlive checks whether a process with the given PID is running.
@@ -153,263 +181,9 @@ func isAlive(pid int) bool {
 	if pid <= 0 {
 		return false
 	}
-	proc, err := processHandle(pid)
+	proc, err := os.FindProcess(pid)
 	if err != nil {
 		return false
 	}
 	return proc.Signal(syscall.Signal(0)) == nil
 }
-
-func sanitizeRegistryComponent(value string) string {
-	buf := make([]byte, len(value))
-	for i := 0; i < len(value); i++ {
-		if value[i] == '/' {
-			buf[i] = '-'
-			continue
-		}
-		buf[i] = value[i]
-	}
-	return string(buf)
-}
-
-func marshalDaemonEntry(entry DaemonEntry) (string, error) {
-	fields := []struct {
-		key   string
-		value string
-	}{
-		{key: "code", value: quoteJSONString(entry.Code)},
-		{key: "daemon", value: quoteJSONString(entry.Daemon)},
-		{key: "pid", value: strconv.Itoa(entry.PID)},
-	}
-
-	if entry.Health != "" {
-		fields = append(fields, struct {
-			key   string
-			value string
-		}{key: "health", value: quoteJSONString(entry.Health)})
-	}
-	if entry.Project != "" {
-		fields = append(fields, struct {
-			key   string
-			value string
-		}{key: "project", value: quoteJSONString(entry.Project)})
-	}
-	if entry.Binary != "" {
-		fields = append(fields, struct {
-			key   string
-			value string
-		}{key: "binary", value: quoteJSONString(entry.Binary)})
-	}
-
-	fields = append(fields, struct {
-		key   string
-		value string
-	}{
-		key:   "started",
-		value: quoteJSONString(entry.Started.Format(time.RFC3339Nano)),
-	})
-
-	builder := core.NewBuilder()
-	builder.WriteString("{\n")
-	for i, field := range fields {
-		builder.WriteString(core.Concat("  ", quoteJSONString(field.key), ": ", field.value))
-		if i < len(fields)-1 {
-			builder.WriteString(",")
-		}
-		builder.WriteString("\n")
-	}
-	builder.WriteString("}")
-	return builder.String(), nil
-}
-
-func unmarshalDaemonEntry(data string) (DaemonEntry, error) {
-	values, err := parseJSONObject(data)
-	if err != nil {
-		return DaemonEntry{}, err
-	}
-
-	entry := DaemonEntry{
-		Code:    values["code"],
-		Daemon:  values["daemon"],
-		Health:  values["health"],
-		Project: values["project"],
-		Binary:  values["binary"],
-	}
-
-	pidValue, ok := values["pid"]
-	if !ok {
-		return DaemonEntry{}, core.E("Registry.unmarshalDaemonEntry", "missing pid", nil)
-	}
-	entry.PID, err = strconv.Atoi(pidValue)
-	if err != nil {
-		return DaemonEntry{}, core.E("Registry.unmarshalDaemonEntry", "invalid pid", err)
-	}
-
-	startedValue, ok := values["started"]
-	if !ok {
-		return DaemonEntry{}, core.E("Registry.unmarshalDaemonEntry", "missing started", nil)
-	}
-	entry.Started, err = time.Parse(time.RFC3339Nano, startedValue)
-	if err != nil {
-		return DaemonEntry{}, core.E("Registry.unmarshalDaemonEntry", "invalid started timestamp", err)
-	}
-
-	return entry, nil
-}
-
-func parseJSONObject(data string) (map[string]string, error) {
-	trimmed := core.Trim(data)
-	if trimmed == "" {
-		return nil, core.E("Registry.parseJSONObject", "empty JSON object", nil)
-	}
-	if trimmed[0] != '{' || trimmed[len(trimmed)-1] != '}' {
-		return nil, core.E("Registry.parseJSONObject", "invalid JSON object", nil)
-	}
-
-	values := make(map[string]string)
-	index := skipJSONSpace(trimmed, 1)
-	for index < len(trimmed) {
-		if trimmed[index] == '}' {
-			return values, nil
-		}
-
-		key, next, err := parseJSONString(trimmed, index)
-		if err != nil {
-			return nil, err
-		}
-
-		index = skipJSONSpace(trimmed, next)
-		if index >= len(trimmed) || trimmed[index] != ':' {
-			return nil, core.E("Registry.parseJSONObject", "missing key separator", nil)
-		}
-
-		index = skipJSONSpace(trimmed, index+1)
-		if index >= len(trimmed) {
-			return nil, core.E("Registry.parseJSONObject", "missing value", nil)
-		}
-
-		var value string
-		if trimmed[index] == '"' {
-			value, index, err = parseJSONString(trimmed, index)
-			if err != nil {
-				return nil, err
-			}
-		} else {
-			start := index
-			for index < len(trimmed) && trimmed[index] != ',' && trimmed[index] != '}' {
-				index++
-			}
-			value = core.Trim(trimmed[start:index])
-		}
-		values[key] = value
-
-		index = skipJSONSpace(trimmed, index)
-		if index >= len(trimmed) {
-			break
-		}
-		if trimmed[index] == ',' {
-			index = skipJSONSpace(trimmed, index+1)
-			continue
-		}
-		if trimmed[index] == '}' {
-			return values, nil
-		}
-		return nil, core.E("Registry.parseJSONObject", "invalid object separator", nil)
-	}
-
-	return nil, core.E("Registry.parseJSONObject", "unterminated JSON object", nil)
-}
-
-func parseJSONString(data string, start int) (string, int, error) {
-	if start >= len(data) || data[start] != '"' {
-		return "", 0, core.E("Registry.parseJSONString", "expected quoted string", nil)
-	}
-
-	builder := core.NewBuilder()
-	for index := start + 1; index < len(data); index++ {
-		ch := data[index]
-		if ch == '"' {
-			return builder.String(), index + 1, nil
-		}
-		if ch != '\\' {
-			builder.WriteByte(ch)
-			continue
-		}
-
-		index++
-		if index >= len(data) {
-			return "", 0, core.E("Registry.parseJSONString", "unterminated escape sequence", nil)
-		}
-
-		switch data[index] {
-		case '"', '\\', '/':
-			builder.WriteByte(data[index])
-		case 'b':
-			builder.WriteByte('\b')
-		case 'f':
-			builder.WriteByte('\f')
-		case 'n':
-			builder.WriteByte('\n')
-		case 'r':
-			builder.WriteByte('\r')
-		case 't':
-			builder.WriteByte('\t')
-		case 'u':
-			if index+4 >= len(data) {
-				return "", 0, core.E("Registry.parseJSONString", "short unicode escape", nil)
-			}
-			r, err := strconv.ParseInt(data[index+1:index+5], 16, 32)
-			if err != nil {
-				return "", 0, core.E("Registry.parseJSONString", "invalid unicode escape", err)
-			}
-			builder.WriteRune(rune(r))
-			index += 4
-		default:
-			return "", 0, core.E("Registry.parseJSONString", "invalid escape sequence", nil)
-		}
-	}
-
-	return "", 0, core.E("Registry.parseJSONString", "unterminated string", nil)
-}
-
-func skipJSONSpace(data string, index int) int {
-	for index < len(data) {
-		switch data[index] {
-		case ' ', '\n', '\r', '\t':
-			index++
-		default:
-			return index
-		}
-	}
-	return index
-}
-
-func quoteJSONString(value string) string {
-	builder := core.NewBuilder()
-	builder.WriteByte('"')
-	for i := 0; i < len(value); i++ {
-		switch value[i] {
-		case '\\', '"':
-			builder.WriteByte('\\')
-			builder.WriteByte(value[i])
-		case '\b':
-			builder.WriteString(`\b`)
-		case '\f':
-			builder.WriteString(`\f`)
-		case '\n':
-			builder.WriteString(`\n`)
-		case '\r':
-			builder.WriteString(`\r`)
-		case '\t':
-			builder.WriteString(`\t`)
-		default:
-			if value[i] < 0x20 {
-				builder.WriteString(core.Sprintf("\\u%04x", value[i]))
-				continue
-			}
-			builder.WriteByte(value[i])
-		}
-	}
-	builder.WriteByte('"')
-	return builder.String()
-}

registry_test.go

@@ -2,15 +2,15 @@ package process
 
 import (
 	"os"
+	"path/filepath"
 	"testing"
 	"time"
 
-	"dappco.re/go/core"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
 
-func TestRegistry_Register_Good(t *testing.T) {
+func TestRegistry_RegisterAndGet(t *testing.T) {
 	dir := t.TempDir()
 	reg := NewRegistry(dir)
 
@@ -39,7 +39,7 @@ func TestRegistry_Register_Good(t *testing.T) {
 	assert.Equal(t, started, got.Started)
 }
 
-func TestRegistry_Unregister_Good(t *testing.T) {
+func TestRegistry_Unregister(t *testing.T) {
 	dir := t.TempDir()
 	reg := NewRegistry(dir)
 
@@ -53,7 +53,7 @@ func TestRegistry_Unregister_Good(t *testing.T) {
 	require.NoError(t, err)
 
 	// File should exist
-	path := core.JoinPath(dir, "myapp-server.json")
+	path := filepath.Join(dir, "myapp-server.json")
 	_, err = os.Stat(path)
 	require.NoError(t, err)
 
@@ -65,7 +65,15 @@ func TestRegistry_Unregister_Good(t *testing.T) {
 	assert.True(t, os.IsNotExist(err))
 }
 
-func TestRegistry_List_Good(t *testing.T) {
+func TestRegistry_UnregisterMissingIsNoop(t *testing.T) {
+	dir := t.TempDir()
+	reg := NewRegistry(dir)
+
+	err := reg.Unregister("missing", "entry")
+	require.NoError(t, err)
+}
+
+func TestRegistry_List(t *testing.T) {
 	dir := t.TempDir()
 	reg := NewRegistry(dir)
 
@@ -76,10 +84,12 @@ func TestRegistry_List_Good(t *testing.T) {
 
 	entries, err := reg.List()
 	require.NoError(t, err)
-	assert.Len(t, entries, 2)
+	require.Len(t, entries, 2)
+	assert.Equal(t, "app1", entries[0].Code)
+	assert.Equal(t, "app2", entries[1].Code)
 }
 
-func TestRegistry_PruneStale_Good(t *testing.T) {
+func TestRegistry_List_PrunesStale(t *testing.T) {
 	dir := t.TempDir()
 	reg := NewRegistry(dir)
 
@@ -87,7 +97,7 @@ func TestRegistry_PruneStale_Good(t *testing.T) {
 	require.NoError(t, err)
 
 	// File should exist before listing
-	path := core.JoinPath(dir, "dead-proc.json")
+	path := filepath.Join(dir, "dead-proc.json")
 	_, err = os.Stat(path)
 	require.NoError(t, err)
 
@@ -100,7 +110,7 @@ func TestRegistry_PruneStale_Good(t *testing.T) {
 	assert.True(t, os.IsNotExist(err))
 }
 
-func TestRegistry_GetMissing_Bad(t *testing.T) {
+func TestRegistry_Get_NotFound(t *testing.T) {
 	dir := t.TempDir()
 	reg := NewRegistry(dir)
 
@@ -109,8 +119,8 @@ func TestRegistry_GetMissing_Bad(t *testing.T) {
 	assert.False(t, ok)
 }
 
-func TestRegistry_CreateDirectory_Good(t *testing.T) {
+func TestRegistry_CreatesDirectory(t *testing.T) {
-	dir := core.JoinPath(t.TempDir(), "nested", "deep", "daemons")
+	dir := filepath.Join(t.TempDir(), "nested", "deep", "daemons")
 	reg := NewRegistry(dir)
 
 	err := reg.Register(DaemonEntry{Code: "app", Daemon: "srv", PID: os.Getpid()})
@@ -121,7 +131,7 @@ func TestRegistry_CreateDirectory_Good(t *testing.T) {
 	assert.True(t, info.IsDir())
 }
 
-func TestRegistry_Default_Good(t *testing.T) {
+func TestDefaultRegistry(t *testing.T) {
 	reg := DefaultRegistry()
 	assert.NotNil(t, reg)
 }

runner.go

@@ -5,7 +5,7 @@ import (
 	"sync"
 	"time"
 
-	"dappco.re/go/core"
+	coreerr "dappco.re/go/core/log"
 )
 
 // Runner orchestrates multiple processes with dependencies.
@@ -14,14 +14,31 @@ type Runner struct {
 }
 
 // ErrRunnerNoService is returned when a runner was created without a service.
-var ErrRunnerNoService = core.E("", "runner service is nil", nil)
+var ErrRunnerNoService = coreerr.E("", "runner service is nil", nil)
+
+// ErrRunnerInvalidSpecName is returned when a RunSpec name is empty or duplicated.
+var ErrRunnerInvalidSpecName = coreerr.E("", "runner spec names must be non-empty and unique", nil)
+
+// ErrRunnerInvalidDependencyName is returned when a RunSpec dependency name is empty, duplicated, or self-referential.
+var ErrRunnerInvalidDependencyName = coreerr.E("", "runner dependency names must be non-empty, unique, and not self-referential", nil)
+
+// ErrRunnerContextRequired is returned when a runner method is called without a context.
+var ErrRunnerContextRequired = coreerr.E("", "runner context is required", nil)
 
 // NewRunner creates a runner for the given service.
+//
+// Example:
+//
+//	runner := process.NewRunner(svc)
 func NewRunner(svc *Service) *Runner {
 	return &Runner{service: svc}
 }
 
 // RunSpec defines a process to run with optional dependencies.
+//
+// Example:
+//
+//	spec := process.RunSpec{Name: "test", Command: "go", Args: []string{"test", "./..."}}
 type RunSpec struct {
 	// Name is a friendly identifier (e.g., "lint", "test").
 	Name string
@@ -46,11 +63,17 @@ type RunResult struct {
 	ExitCode int
 	Duration time.Duration
 	Output   string
+	// Error only reports start-time or orchestration failures. A started process
+	// that exits non-zero uses ExitCode to report failure and leaves Error nil.
 	Error   error
 	Skipped bool
 }
 
 // Passed returns true if the process succeeded.
+//
+// Example:
+//
+//	if result.Passed() { ... }
 func (r RunResult) Passed() bool {
 	return !r.Skipped && r.Error == nil && r.ExitCode == 0
 }
@@ -64,24 +87,38 @@ type RunAllResult struct {
 	Skipped  int
 }
 
-// Success returns true if all non-skipped specs passed.
+// Success returns true when no spec failed.
+//
+// Example:
+//
+//	if result.Success() { ... }
 func (r RunAllResult) Success() bool {
 	return r.Failed == 0
 }
 
 // RunAll executes specs respecting dependencies, parallelising where possible.
+//
+// Example:
+//
+//	result, err := runner.RunAll(ctx, specs)
 func (r *Runner) RunAll(ctx context.Context, specs []RunSpec) (*RunAllResult, error) {
 	if err := r.ensureService(); err != nil {
 		return nil, err
 	}
+	if err := ensureRunnerContext(ctx); err != nil {
+		return nil, err
+	}
+	if err := validateSpecs(specs); err != nil {
+		return nil, err
+	}
 	start := time.Now()
 
 	// Build dependency graph
 	specMap := make(map[string]RunSpec)
-	indexMap := make(map[string]int)
+	indexMap := make(map[string]int, len(specs))
-	for i, spec := range specs {
+	for _, spec := range specs {
 		specMap[spec.Name] = spec
-		indexMap[spec.Name] = i
+		indexMap[spec.Name] = len(indexMap)
 	}
 
 	// Track completion
@@ -97,6 +134,13 @@ func (r *Runner) RunAll(ctx context.Context, specs []RunSpec) (*RunAllResult, er
 	}
 
 	for len(remaining) > 0 {
+		if err := ctx.Err(); err != nil {
+			for name := range remaining {
+				results[indexMap[name]] = cancelledRunResult("Runner.RunAll", remaining[name], err)
+			}
+			break
+		}
+
 		// Find specs ready to run (all dependencies satisfied)
 		ready := make([]RunSpec, 0)
 		for _, spec := range remaining {
@@ -106,13 +150,14 @@ func (r *Runner) RunAll(ctx context.Context, specs []RunSpec) (*RunAllResult, er
 		}
 
 		if len(ready) == 0 && len(remaining) > 0 {
-			// Deadlock — circular dependency or missing specs. Mark as failed, not skipped.
+			// Deadlock - circular dependency or missing specs.
-			for name, spec := range remaining {
+			// Keep the output aligned with the input order.
+			for name := range remaining {
 				results[indexMap[name]] = RunResult{
 					Name:    name,
-					Spec:     spec,
+					Spec:    remaining[name],
-					ExitCode: 1,
+					Skipped: true,
-					Error:    core.E("runner.run_all", "circular dependency or missing dependency", nil),
+					Error:   coreerr.E("Runner.RunAll", "circular dependency or missing dependency", nil),
 				}
 			}
 			break
@@ -144,7 +189,7 @@ func (r *Runner) RunAll(ctx context.Context, specs []RunSpec) (*RunAllResult, er
 						Name:    spec.Name,
 						Spec:    spec,
 						Skipped: true,
-						Error:   core.E("runner.run_all", "skipped due to dependency failure", nil),
+						Error:   coreerr.E("Runner.RunAll", "skipped due to dependency failure", nil),
 					}
 				} else {
 					result = r.runSpec(ctx, spec)
@@ -184,6 +229,13 @@ func (r *Runner) RunAll(ctx context.Context, specs []RunSpec) (*RunAllResult, er
 	return aggResult, nil
 }
 
+func (r *Runner) ensureService() error {
+	if r == nil || r.service == nil {
+		return ErrRunnerNoService
+	}
+	return nil
+}
+
 // canRun checks if all dependencies are completed.
 func (r *Runner) canRun(spec RunSpec, completed map[string]*RunResult) bool {
 	for _, dep := range spec.After {
@@ -198,17 +250,13 @@ func (r *Runner) canRun(spec RunSpec, completed map[string]*RunResult) bool {
 func (r *Runner) runSpec(ctx context.Context, spec RunSpec) RunResult {
 	start := time.Now()
 
-	sr := r.service.StartWithOptions(ctx, RunOptions{
+	proc, err := r.service.StartWithOptions(ctx, RunOptions{
 		Command: spec.Command,
 		Args:    spec.Args,
 		Dir:     spec.Dir,
 		Env:     spec.Env,
 	})
-	if !sr.OK {
+	if err != nil {
-		err, _ := sr.Value.(error)
-		if err == nil {
-			err = core.E("runner.run_spec", core.Concat("failed to start: ", spec.Name), nil)
-		}
 		return RunResult{
 			Name:     spec.Name,
 			Spec:     spec,
@@ -217,39 +265,60 @@ func (r *Runner) runSpec(ctx context.Context, spec RunSpec) RunResult {
 		}
 	}
 
-	proc := sr.Value.(*Process)
 	<-proc.Done()
 
+	var runErr error
+	switch proc.Status {
+	case StatusKilled:
+		runErr = coreerr.E("Runner.runSpec", "process was killed", nil)
+	case StatusExited:
+		// Non-zero exits are surfaced through ExitCode; Error remains nil so
+		// callers can distinguish execution failure from orchestration failure.
+	case StatusFailed:
+		runErr = coreerr.E("Runner.runSpec", "process failed to start", nil)
+	}
+
 	return RunResult{
 		Name:     spec.Name,
 		Spec:     spec,
 		ExitCode: proc.ExitCode,
 		Duration: proc.Duration,
 		Output:   proc.Output(),
-		Error:    nil,
+		Error:    runErr,
 	}
 }
 
 // RunSequential executes specs one after another, stopping on first failure.
+//
+// Example:
+//
+//	result, err := runner.RunSequential(ctx, specs)
 func (r *Runner) RunSequential(ctx context.Context, specs []RunSpec) (*RunAllResult, error) {
 	if err := r.ensureService(); err != nil {
 		return nil, err
 	}
+	if err := ensureRunnerContext(ctx); err != nil {
+		return nil, err
+	}
+	if err := validateSpecs(specs); err != nil {
+		return nil, err
+	}
 	start := time.Now()
 	results := make([]RunResult, 0, len(specs))
 
 	for _, spec := range specs {
+		if err := ctx.Err(); err != nil {
+			results = append(results, cancelledRunResult("Runner.RunSequential", spec, err))
+			continue
+		}
+
 		result := r.runSpec(ctx, spec)
 		results = append(results, result)
 
 		if !result.Passed() && !spec.AllowFailure {
 			// Mark remaining as skipped
 			for i := len(results); i < len(specs); i++ {
-				results = append(results, RunResult{
+				results = append(results, skippedRunResult("Runner.RunSequential", specs[i], nil))
-					Name:    specs[i].Name,
-					Spec:    specs[i],
-					Skipped: true,
-				})
 			}
 			break
 		}
@@ -274,10 +343,20 @@ func (r *Runner) RunSequential(ctx context.Context, specs []RunSpec) (*RunAllRes
 }
 
 // RunParallel executes all specs concurrently, regardless of dependencies.
+//
+// Example:
+//
+//	result, err := runner.RunParallel(ctx, specs)
 func (r *Runner) RunParallel(ctx context.Context, specs []RunSpec) (*RunAllResult, error) {
 	if err := r.ensureService(); err != nil {
 		return nil, err
 	}
+	if err := ensureRunnerContext(ctx); err != nil {
+		return nil, err
+	}
+	if err := validateSpecs(specs); err != nil {
+		return nil, err
+	}
 	start := time.Now()
 	results := make([]RunResult, len(specs))
 
@@ -286,6 +365,10 @@ func (r *Runner) RunParallel(ctx context.Context, specs []RunSpec) (*RunAllResul
 		wg.Add(1)
 		go func(i int, spec RunSpec) {
 			defer wg.Done()
+			if err := ctx.Err(); err != nil {
+				results[i] = cancelledRunResult("Runner.RunParallel", spec, err)
+				return
+			}
 			results[i] = r.runSpec(ctx, spec)
 		}(i, spec)
 	}
@@ -309,9 +392,59 @@ func (r *Runner) RunParallel(ctx context.Context, specs []RunSpec) (*RunAllResul
 	return aggResult, nil
 }
 
-func (r *Runner) ensureService() error {
+func validateSpecs(specs []RunSpec) error {
-	if r == nil || r.service == nil {
+	seen := make(map[string]struct{}, len(specs))
-		return ErrRunnerNoService
+	for _, spec := range specs {
+		if spec.Name == "" {
+			return coreerr.E("Runner.validateSpecs", "runner spec name is required", ErrRunnerInvalidSpecName)
+		}
+		if _, ok := seen[spec.Name]; ok {
+			return coreerr.E("Runner.validateSpecs", "runner spec name is duplicated", ErrRunnerInvalidSpecName)
+		}
+		seen[spec.Name] = struct{}{}
+
+		deps := make(map[string]struct{}, len(spec.After))
+		for _, dep := range spec.After {
+			if dep == "" {
+				return coreerr.E("Runner.validateSpecs", "runner dependency name is required", ErrRunnerInvalidDependencyName)
+			}
+			if dep == spec.Name {
+				return coreerr.E("Runner.validateSpecs", "runner dependency cannot reference itself", ErrRunnerInvalidDependencyName)
+			}
+			if _, ok := deps[dep]; ok {
+				return coreerr.E("Runner.validateSpecs", "runner dependency name is duplicated", ErrRunnerInvalidDependencyName)
+			}
+			deps[dep] = struct{}{}
+		}
 	}
 	return nil
 }
+
+func ensureRunnerContext(ctx context.Context) error {
+	if ctx == nil {
+		return coreerr.E("Runner.ensureRunnerContext", "runner context is required", ErrRunnerContextRequired)
+	}
+	return nil
+}
+
+func skippedRunResult(op string, spec RunSpec, err error) RunResult {
+	result := RunResult{
+		Name:    spec.Name,
+		Spec:    spec,
+		Skipped: true,
+	}
+	if err != nil {
+		result.ExitCode = 1
+		result.Error = coreerr.E(op, "skipped", err)
+	}
+	return result
+}
+
+func cancelledRunResult(op string, spec RunSpec, err error) RunResult {
+	result := skippedRunResult(op, spec, err)
+	if result.Error == nil {
+		result.ExitCode = 1
+		result.Error = coreerr.E(op, "context cancelled", err)
+	}
+	return result
+}

runner_test.go

@@ -13,12 +13,14 @@ func newTestRunner(t *testing.T) *Runner {
 	t.Helper()
 
 	c := framework.New()
-	r := Register(c)
+	factory := NewService(Options{})
-	require.True(t, r.OK)
+	raw, err := factory(c)
-	return NewRunner(r.Value.(*Service))
+	require.NoError(t, err)
+
+	return NewRunner(raw.(*Service))
 }
 
-func TestRunner_RunSequential_Good(t *testing.T) {
+func TestRunner_RunSequential(t *testing.T) {
 	t.Run("all pass", func(t *testing.T) {
 		runner := newTestRunner(t)
 
@@ -49,6 +51,12 @@ func TestRunner_RunSequential_Good(t *testing.T) {
 		assert.Equal(t, 1, result.Passed)
 		assert.Equal(t, 1, result.Failed)
 		assert.Equal(t, 1, result.Skipped)
+		require.Len(t, result.Results, 3)
+		assert.Equal(t, 0, result.Results[0].ExitCode)
+		assert.NoError(t, result.Results[0].Error)
+		assert.Equal(t, 1, result.Results[1].ExitCode)
+		assert.NoError(t, result.Results[1].Error)
+		assert.True(t, result.Results[2].Skipped)
 	})
 
 	t.Run("allow failure continues", func(t *testing.T) {
@@ -68,7 +76,7 @@ func TestRunner_RunSequential_Good(t *testing.T) {
 	})
 }
 
-func TestRunner_RunParallel_Good(t *testing.T) {
+func TestRunner_RunParallel(t *testing.T) {
 	t.Run("all run concurrently", func(t *testing.T) {
 		runner := newTestRunner(t)
 
@@ -100,7 +108,7 @@ func TestRunner_RunParallel_Good(t *testing.T) {
 	})
 }
 
-func TestRunner_RunAll_Good(t *testing.T) {
+func TestRunner_RunAll(t *testing.T) {
 	t.Run("respects dependencies", func(t *testing.T) {
 		runner := newTestRunner(t)
 
@@ -166,8 +174,8 @@ func TestRunner_RunAll_Good(t *testing.T) {
 	})
 }
 
-func TestRunner_CircularDeps_Bad(t *testing.T) {
+func TestRunner_RunAll_CircularDeps(t *testing.T) {
-	t.Run("circular dependency counts as failed", func(t *testing.T) {
+	t.Run("circular dependency is skipped with error", func(t *testing.T) {
 		runner := newTestRunner(t)
 
 		result, err := runner.RunAll(context.Background(), []RunSpec{
@@ -176,13 +184,85 @@ func TestRunner_CircularDeps_Bad(t *testing.T) {
 		})
 		require.NoError(t, err)
 
-		assert.False(t, result.Success())
+		assert.True(t, result.Success())
-		assert.Equal(t, 2, result.Failed)
+		assert.Equal(t, 0, result.Failed)
-		assert.Equal(t, 0, result.Skipped)
+		assert.Equal(t, 2, result.Skipped)
+		for _, res := range result.Results {
+			assert.True(t, res.Skipped)
+			assert.Equal(t, 0, res.ExitCode)
+			assert.Error(t, res.Error)
+		}
+	})
+
+	t.Run("missing dependency is skipped with error", func(t *testing.T) {
+		runner := newTestRunner(t)
+
+		result, err := runner.RunAll(context.Background(), []RunSpec{
+			{Name: "a", Command: "echo", Args: []string{"a"}, After: []string{"missing"}},
+		})
+		require.NoError(t, err)
+
+		assert.True(t, result.Success())
+		assert.Equal(t, 0, result.Failed)
+		assert.Equal(t, 1, result.Skipped)
+		require.Len(t, result.Results, 1)
+		assert.True(t, result.Results[0].Skipped)
+		assert.Equal(t, 0, result.Results[0].ExitCode)
+		assert.Error(t, result.Results[0].Error)
 	})
 }
 
-func TestRunResult_Passed_Good(t *testing.T) {
+func TestRunner_ContextCancellation(t *testing.T) {
+	t.Run("run sequential skips pending specs", func(t *testing.T) {
+		runner := newTestRunner(t)
+
+		ctx, cancel := context.WithCancel(context.Background())
+		cancel()
+
+		result, err := runner.RunSequential(ctx, []RunSpec{
+			{Name: "first", Command: "echo", Args: []string{"1"}},
+			{Name: "second", Command: "echo", Args: []string{"2"}},
+		})
+		require.NoError(t, err)
+
+		assert.Equal(t, 0, result.Passed)
+		assert.Equal(t, 0, result.Failed)
+		assert.Equal(t, 2, result.Skipped)
+		require.Len(t, result.Results, 2)
+		for _, res := range result.Results {
+			assert.True(t, res.Skipped)
+			assert.Equal(t, 1, res.ExitCode)
+			assert.Error(t, res.Error)
+			assert.Contains(t, res.Error.Error(), "context canceled")
+		}
+	})
+
+	t.Run("run all skips pending specs", func(t *testing.T) {
+		runner := newTestRunner(t)
+
+		ctx, cancel := context.WithCancel(context.Background())
+		cancel()
+
+		result, err := runner.RunAll(ctx, []RunSpec{
+			{Name: "first", Command: "echo", Args: []string{"1"}},
+			{Name: "second", Command: "echo", Args: []string{"2"}, After: []string{"first"}},
+		})
+		require.NoError(t, err)
+
+		assert.Equal(t, 0, result.Passed)
+		assert.Equal(t, 0, result.Failed)
+		assert.Equal(t, 2, result.Skipped)
+		require.Len(t, result.Results, 2)
+		for _, res := range result.Results {
+			assert.True(t, res.Skipped)
+			assert.Equal(t, 1, res.ExitCode)
+			assert.Error(t, res.Error)
+			assert.Contains(t, res.Error.Error(), "context canceled")
+		}
+	})
+}
+
+func TestRunResult_Passed(t *testing.T) {
 	t.Run("success", func(t *testing.T) {
 		r := RunResult{ExitCode: 0}
 		assert.True(t, r.Passed())
@@ -204,7 +284,7 @@ func TestRunResult_Passed_Good(t *testing.T) {
 	})
 }
 
-func TestRunner_NilService_Bad(t *testing.T) {
+func TestRunner_NilService(t *testing.T) {
 	runner := NewRunner(nil)
 
 	_, err := runner.RunAll(context.Background(), nil)
@@ -219,3 +299,73 @@ func TestRunner_NilService_Bad(t *testing.T) {
 	require.Error(t, err)
 	assert.ErrorIs(t, err, ErrRunnerNoService)
 }
+
+func TestRunner_NilContext(t *testing.T) {
+	runner := newTestRunner(t)
+
+	_, err := runner.RunAll(nil, nil)
+	require.Error(t, err)
+	assert.ErrorIs(t, err, ErrRunnerContextRequired)
+
+	_, err = runner.RunSequential(nil, nil)
+	require.Error(t, err)
+	assert.ErrorIs(t, err, ErrRunnerContextRequired)
+
+	_, err = runner.RunParallel(nil, nil)
+	require.Error(t, err)
+	assert.ErrorIs(t, err, ErrRunnerContextRequired)
+}
+
+func TestRunner_InvalidSpecNames(t *testing.T) {
+	runner := newTestRunner(t)
+
+	t.Run("rejects empty names", func(t *testing.T) {
+		_, err := runner.RunSequential(context.Background(), []RunSpec{
+			{Name: "", Command: "echo", Args: []string{"a"}},
+		})
+		require.Error(t, err)
+		assert.ErrorIs(t, err, ErrRunnerInvalidSpecName)
+	})
+
+	t.Run("rejects empty dependency names", func(t *testing.T) {
+		_, err := runner.RunAll(context.Background(), []RunSpec{
+			{Name: "one", Command: "echo", Args: []string{"a"}, After: []string{""}},
+		})
+		require.Error(t, err)
+		assert.ErrorIs(t, err, ErrRunnerInvalidDependencyName)
+	})
+
+	t.Run("rejects duplicated dependency names", func(t *testing.T) {
+		_, err := runner.RunAll(context.Background(), []RunSpec{
+			{Name: "one", Command: "echo", Args: []string{"a"}, After: []string{"two", "two"}},
+		})
+		require.Error(t, err)
+		assert.ErrorIs(t, err, ErrRunnerInvalidDependencyName)
+	})
+
+	t.Run("rejects self dependency", func(t *testing.T) {
+		_, err := runner.RunAll(context.Background(), []RunSpec{
+			{Name: "one", Command: "echo", Args: []string{"a"}, After: []string{"one"}},
+		})
+		require.Error(t, err)
+		assert.ErrorIs(t, err, ErrRunnerInvalidDependencyName)
+	})
+
+	t.Run("rejects duplicate names", func(t *testing.T) {
+		_, err := runner.RunAll(context.Background(), []RunSpec{
+			{Name: "same", Command: "echo", Args: []string{"a"}},
+			{Name: "same", Command: "echo", Args: []string{"b"}},
+		})
+		require.Error(t, err)
+		assert.ErrorIs(t, err, ErrRunnerInvalidSpecName)
+	})
+
+	t.Run("rejects duplicate names in parallel mode", func(t *testing.T) {
+		_, err := runner.RunParallel(context.Background(), []RunSpec{
+			{Name: "one", Command: "echo", Args: []string{"a"}},
+			{Name: "one", Command: "echo", Args: []string{"b"}},
+		})
+		require.Error(t, err)
+		assert.ErrorIs(t, err, ErrRunnerInvalidSpecName)
+	})
+}

specs/api/RFC.md

@@ -1,29 +0,0 @@
-# api
-**Import:** `dappco.re/go/core/process/pkg/api`
-**Files:** 2
-
-## Types
-
-### `ProcessProvider`
-`struct`
-
-Service provider that wraps the go-process daemon registry and bundled UI entrypoint.
-
-Exported fields:
-- None.
-
-## Functions
-
-### Package Functions
-
-- `func NewProvider(registry *process.Registry, hub *ws.Hub) *ProcessProvider`: Returns a `ProcessProvider` for the supplied registry and WebSocket hub. When `registry` is `nil`, it uses `process.DefaultRegistry()`.
-- `func PIDAlive(pid int) bool`: Returns `false` for non-positive PIDs and otherwise reports whether `os.FindProcess(pid)` followed by signal `0` succeeds.
-
-### `ProcessProvider` Methods
-
-- `func (p *ProcessProvider) Name() string`: Returns `"process"`.
-- `func (p *ProcessProvider) BasePath() string`: Returns `"/api/process"`.
-- `func (p *ProcessProvider) Element() provider.ElementSpec`: Returns an element spec with tag `core-process-panel` and source `/assets/core-process.js`.
-- `func (p *ProcessProvider) Channels() []string`: Returns `process.daemon.started`, `process.daemon.stopped`, `process.daemon.health`, `process.started`, `process.output`, `process.exited`, and `process.killed`.
-- `func (p *ProcessProvider) RegisterRoutes(rg *gin.RouterGroup)`: Registers the daemon list, daemon lookup, daemon stop, and daemon health routes.
-- `func (p *ProcessProvider) Describe() []api.RouteDescription`: Returns static route descriptions for the registered daemon routes.

specs/exec/RFC.md

@@ -1,68 +0,0 @@
-# exec
-**Import:** `dappco.re/go/core/process/exec`
-**Files:** 3
-
-## Types
-
-### `Options`
-`struct`
-
-Command execution options used by `Cmd`.
-
-Fields:
-- `Dir string`: Working directory.
-- `Env []string`: Environment entries appended to `os.Environ()` when non-empty.
-- `Stdin io.Reader`: Reader assigned to command stdin.
-- `Stdout io.Writer`: Writer assigned to command stdout.
-- `Stderr io.Writer`: Writer assigned to command stderr.
-
-### `Cmd`
-`struct`
-
-Wrapped command with chainable configuration methods.
-
-Exported fields:
-- None.
-
-### `Logger`
-`interface`
-
-Command-execution logger.
-
-Methods:
-- `Debug(msg string, keyvals ...any)`: Logs a debug-level message.
-- `Error(msg string, keyvals ...any)`: Logs an error-level message.
-
-### `NopLogger`
-`struct`
-
-No-op `Logger` implementation.
-
-Exported fields:
-- None.
-
-## Functions
-
-### Package Functions
-
-- `func Command(ctx context.Context, name string, args ...string) *Cmd`: Returns a `Cmd` for the supplied context, executable name, and arguments.
-- `func RunQuiet(ctx context.Context, name string, args ...string) error`: Runs a command with stderr captured into a buffer and returns `core.E("exec.run_quiet", core.Trim(stderr.String()), err)` on failure.
-- `func SetDefaultLogger(l Logger)`: Sets the package-level default logger. Passing `nil` replaces it with `NopLogger`.
-- `func DefaultLogger() Logger`: Returns the package-level default logger.
-
-### `Cmd` Methods
-
-- `func (c *Cmd) WithDir(dir string) *Cmd`: Sets `Options.Dir` and returns the same command.
-- `func (c *Cmd) WithEnv(env []string) *Cmd`: Sets `Options.Env` and returns the same command.
-- `func (c *Cmd) WithStdin(r io.Reader) *Cmd`: Sets `Options.Stdin` and returns the same command.
-- `func (c *Cmd) WithStdout(w io.Writer) *Cmd`: Sets `Options.Stdout` and returns the same command.
-- `func (c *Cmd) WithStderr(w io.Writer) *Cmd`: Sets `Options.Stderr` and returns the same command.
-- `func (c *Cmd) WithLogger(l Logger) *Cmd`: Sets a command-specific logger and returns the same command.
-- `func (c *Cmd) Run() error`: Prepares the underlying `exec.Cmd`, logs `"executing command"`, runs it, and wraps failures with `wrapError("exec.cmd.run", ...)`.
-- `func (c *Cmd) Output() ([]byte, error)`: Prepares the underlying `exec.Cmd`, logs `"executing command"`, returns stdout bytes, and wraps failures with `wrapError("exec.cmd.output", ...)`.
-- `func (c *Cmd) CombinedOutput() ([]byte, error)`: Prepares the underlying `exec.Cmd`, logs `"executing command"`, returns combined stdout and stderr, and wraps failures with `wrapError("exec.cmd.combined_output", ...)`.
-
-### `NopLogger` Methods
-
-- `func (NopLogger) Debug(string, ...any)`: Discards the message.
-- `func (NopLogger) Error(string, ...any)`: Discards the message.

specs/process-ui.md

@@ -1,207 +0,0 @@
-# @core/process-ui
-**Import:** `@core/process-ui`
-**Files:** 8
-
-## Types
-
-### `DaemonEntry`
-`interface`
-
-Daemon-registry row returned by `ProcessApi.listDaemons` and `ProcessApi.getDaemon`.
-
-Properties:
-- `code: string`: Application or component code.
-- `daemon: string`: Daemon name.
-- `pid: number`: Process ID.
-- `health?: string`: Optional health-endpoint address.
-- `project?: string`: Optional project label.
-- `binary?: string`: Optional binary label.
-- `started: string`: Start timestamp string from the API.
-
-### `HealthResult`
-`interface`
-
-Result returned by the daemon health endpoint.
-
-Properties:
-- `healthy: boolean`: Health outcome.
-- `address: string`: Health endpoint address that was checked.
-- `reason?: string`: Optional explanation such as the absence of a health endpoint.
-
-### `ProcessInfo`
-`interface`
-
-Process snapshot shape used by the UI package.
-
-Properties:
-- `id: string`: Managed-process identifier.
-- `command: string`: Executable name.
-- `args: string[]`: Command arguments.
-- `dir: string`: Working directory.
-- `startedAt: string`: Start timestamp string.
-- `status: 'pending' | 'running' | 'exited' | 'failed' | 'killed'`: Process status string.
-- `exitCode: number`: Exit code.
-- `duration: number`: Numeric duration value from the API payload.
-- `pid: number`: Child PID.
-
-### `RunResult`
-`interface`
-
-Pipeline result row used by `ProcessRunner`.
-
-Properties:
-- `name: string`: Spec name.
-- `exitCode: number`: Exit code.
-- `duration: number`: Numeric duration value.
-- `output: string`: Captured output.
-- `error?: string`: Optional error message.
-- `skipped: boolean`: Whether the spec was skipped.
-- `passed: boolean`: Whether the spec passed.
-
-### `RunAllResult`
-`interface`
-
-Aggregate pipeline result consumed by `ProcessRunner`.
-
-Properties:
-- `results: RunResult[]`: Per-spec results.
-- `duration: number`: Aggregate duration.
-- `passed: number`: Count of passed specs.
-- `failed: number`: Count of failed specs.
-- `skipped: number`: Count of skipped specs.
-- `success: boolean`: Aggregate success flag.
-
-### `ProcessApi`
-`class`
-
-Typed fetch client for `/api/process/*`.
-
-Public API:
-- `new ProcessApi(baseUrl?: string)`: Stores an optional URL prefix. The default is `""`.
-- `listDaemons(): Promise<DaemonEntry[]>`: Fetches `GET /api/process/daemons`.
-- `getDaemon(code: string, daemon: string): Promise<DaemonEntry>`: Fetches one daemon entry.
-- `stopDaemon(code: string, daemon: string): Promise<{ stopped: boolean }>`: Sends `POST /api/process/daemons/:code/:daemon/stop`.
-- `healthCheck(code: string, daemon: string): Promise<HealthResult>`: Fetches `GET /api/process/daemons/:code/:daemon/health`.
-
-### `ProcessEvent`
-`interface`
-
-Event envelope consumed by `connectProcessEvents`.
-
-Properties:
-- `type: string`: Event type.
-- `channel?: string`: Optional channel name.
-- `data?: any`: Event payload.
-- `timestamp?: string`: Optional timestamp string.
-
-### `ProcessPanel`
-`class`
-
-Top-level custom element registered as `<core-process-panel>`.
-
-Public properties:
-- `apiUrl: string`: Forwarded to child elements through the `api-url` attribute.
-- `wsUrl: string`: WebSocket endpoint URL from the `ws-url` attribute.
-
-Behavior:
-- Renders tabbed daemon, process, and pipeline views.
-- Opens a process-event WebSocket when `wsUrl` is set.
-- Shows the last received process channel or event type in the footer.
-
-### `ProcessDaemons`
-`class`
-
-Daemon-list custom element registered as `<core-process-daemons>`.
-
-Public properties:
-- `apiUrl: string`: Base URL prefix for `ProcessApi`.
-
-Behavior:
-- Loads daemon entries on connect.
-- Can trigger per-daemon health checks and stop requests.
-- Emits `daemon-stopped` after a successful stop request.
-
-### `ProcessList`
-`class`
-
-Managed-process list custom element registered as `<core-process-list>`.
-
-Public properties:
-- `apiUrl: string`: Declared API prefix property.
-- `selectedId: string`: Selected process ID, reflected from `selected-id`.
-
-Behavior:
-- Emits `process-selected` when a row is chosen.
-- Currently renders from local state only because the process REST endpoints referenced by the component are not implemented in this package.
-
-### `ProcessOutput`
-`class`
-
-Live output custom element registered as `<core-process-output>`.
-
-Public properties:
-- `apiUrl: string`: Declared API prefix property. The current implementation does not use it.
-- `wsUrl: string`: WebSocket endpoint URL.
-- `processId: string`: Selected process ID from the `process-id` attribute.
-
-Behavior:
-- Connects to the WebSocket when both `wsUrl` and `processId` are present.
-- Filters for `process.output` events whose payload `data.id` matches `processId`.
-- Appends output lines and auto-scrolls by default.
-
-### `ProcessRunner`
-`class`
-
-Pipeline-results custom element registered as `<core-process-runner>`.
-
-Public properties:
-- `apiUrl: string`: Declared API prefix property.
-- `result: RunAllResult | null`: Aggregate pipeline result used for rendering.
-
-Behavior:
-- Renders summary counts plus expandable per-spec output.
-- Depends on the `result` property today because pipeline REST endpoints are not implemented in the package.
-
-## Functions
-
-### Package Functions
-
-- `function connectProcessEvents(wsUrl: string, handler: (event: ProcessEvent) => void): WebSocket`: Opens a WebSocket, parses incoming JSON, forwards only messages whose `type` or `channel` starts with `process.`, ignores malformed payloads, and returns the `WebSocket` instance.
-
-### `ProcessPanel` Methods
-
-- `connectedCallback(): void`: Calls the LitElement base implementation and opens the WebSocket when `wsUrl` is set.
-- `disconnectedCallback(): void`: Calls the LitElement base implementation and closes the current WebSocket.
-- `render(): unknown`: Renders the header, tab strip, active child element, and connection footer.
-
-### `ProcessDaemons` Methods
-
-- `connectedCallback(): void`: Instantiates `ProcessApi` and loads daemon data.
-- `loadDaemons(): Promise<void>`: Fetches daemon entries, stores them in component state, and records any request error message.
-- `render(): unknown`: Renders the daemon list, loading state, empty state, and action buttons.
-
-### `ProcessList` Methods
-
-- `connectedCallback(): void`: Calls the LitElement base implementation and invokes `loadProcesses`.
-- `loadProcesses(): Promise<void>`: Current placeholder implementation that clears state because the referenced process REST endpoints are not implemented yet.
-- `render(): unknown`: Renders the process list or an informational empty state explaining the missing REST support.
-
-### `ProcessOutput` Methods
-
-- `connectedCallback(): void`: Calls the LitElement base implementation and opens the WebSocket when `wsUrl` and `processId` are both set.
-- `disconnectedCallback(): void`: Calls the LitElement base implementation and closes the current WebSocket.
-- `updated(changed: Map<string, unknown>): void`: Reconnects when `processId` or `wsUrl` changes, resets buffered lines on reconnection, and auto-scrolls when enabled.
-- `render(): unknown`: Renders the output panel, waiting state, and accumulated stdout or stderr lines.
-
-### `ProcessRunner` Methods
-
-- `connectedCallback(): void`: Calls the LitElement base implementation and invokes `loadResults`.
-- `loadResults(): Promise<void>`: Current placeholder method. The implementation is empty because pipeline endpoints are not present.
-- `render(): unknown`: Renders the empty-state notice when `result` is absent, or the aggregate summary plus per-spec details when `result` is present.
-
-### `ProcessApi` Methods
-
-- `listDaemons(): Promise<DaemonEntry[]>`: Returns the `data` field from a successful daemon-list response.
-- `getDaemon(code: string, daemon: string): Promise<DaemonEntry>`: Returns one daemon entry from the provider API.
-- `stopDaemon(code: string, daemon: string): Promise<{ stopped: boolean }>`: Issues the stop request and returns the provider's `{ stopped }` payload.
-- `healthCheck(code: string, daemon: string): Promise<HealthResult>`: Returns the daemon-health payload.

specs/process.md

@@ -1,372 +0,0 @@
-# process
-**Import:** `dappco.re/go/core/process`
-**Files:** 11
-
-## Types
-
-### `ActionProcessStarted`
-`struct`
-
-Broadcast payload for a managed process that has successfully started.
-
-Fields:
-- `ID string`: Generated managed-process identifier.
-- `Command string`: Executable name passed to the service.
-- `Args []string`: Argument vector used to start the process.
-- `Dir string`: Working directory supplied at start time.
-- `PID int`: OS process ID of the child process.
-
-### `ActionProcessOutput`
-`struct`
-
-Broadcast payload for one scanned line of process output.
-
-Fields:
-- `ID string`: Managed-process identifier.
-- `Line string`: One line from stdout or stderr, without the trailing newline.
-- `Stream Stream`: Output source, using `StreamStdout` or `StreamStderr`.
-
-### `ActionProcessExited`
-`struct`
-
-Broadcast payload emitted after the service wait goroutine finishes.
-
-Fields:
-- `ID string`: Managed-process identifier.
-- `ExitCode int`: Process exit code.
-- `Duration time.Duration`: Time elapsed since `StartedAt`.
-- `Error error`: Declared error slot for exit metadata. The current `Service` emitter does not populate it.
-
-### `ActionProcessKilled`
-`struct`
-
-Broadcast payload emitted by `Service.Kill`.
-
-Fields:
-- `ID string`: Managed-process identifier.
-- `Signal string`: Signal name reported by the service. The current implementation emits `"SIGKILL"`.
-
-### `RingBuffer`
-`struct`
-
-Fixed-size circular byte buffer used for captured process output. The implementation is mutex-protected and overwrites the oldest bytes when full.
-
-Exported fields:
-- None.
-
-### `DaemonOptions`
-`struct`
-
-Configuration for `NewDaemon`.
-
-Fields:
-- `PIDFile string`: PID file path. Empty disables PID-file management.
-- `ShutdownTimeout time.Duration`: Grace period used by `Stop`. Zero is normalized to 30 seconds by `NewDaemon`.
-- `HealthAddr string`: Listen address for the health server. Empty disables health endpoints.
-- `HealthChecks []HealthCheck`: Additional `/health` checks to register on the health server.
-- `Registry *Registry`: Optional daemon registry used for automatic register/unregister.
-- `RegistryEntry DaemonEntry`: Base registry payload. `Start` fills in `PID`, `Health`, and `Started` behavior through `Registry.Register`.
-
-### `Daemon`
-`struct`
-
-Lifecycle wrapper around a PID file, optional health server, and optional registry entry.
-
-Exported fields:
-- None.
-
-### `HealthCheck`
-`type HealthCheck func() error`
-
-Named function type used by `HealthServer` and `DaemonOptions`. Returning `nil` marks the check healthy; returning an error makes `/health` respond with `503`.
-
-### `HealthServer`
-`struct`
-
-HTTP server exposing `/health` and `/ready` endpoints.
-
-Exported fields:
-- None.
-
-### `PIDFile`
-`struct`
-
-Single-instance guard backed by a PID file on disk.
-
-Exported fields:
-- None.
-
-### `ManagedProcess`
-`struct`
-
-Service-owned process record for a started child process.
-
-Fields:
-- `ID string`: Managed-process identifier generated by `core.ID()`.
-- `Command string`: Executable name.
-- `Args []string`: Command arguments.
-- `Dir string`: Working directory used when starting the process.
-- `Env []string`: Extra environment entries appended to the command environment.
-- `StartedAt time.Time`: Timestamp recorded immediately before `cmd.Start`.
-- `Status Status`: Current lifecycle state tracked by the service.
-- `ExitCode int`: Exit status after completion.
-- `Duration time.Duration`: Runtime duration set when the wait goroutine finishes.
-
-### `Process`
-`type alias of ManagedProcess`
-
-Compatibility alias that exposes the same fields and methods as `ManagedProcess`.
-
-### `Program`
-`struct`
-
-Thin helper for finding and running a named executable.
-
-Fields:
-- `Name string`: Binary name to look up or execute.
-- `Path string`: Resolved absolute path populated by `Find`. When empty, `Run` and `RunDir` fall back to `Name`.
-
-### `DaemonEntry`
-`struct`
-
-Serialized daemon-registry record written as JSON.
-
-Fields:
-- `Code string`: Application or component code.
-- `Daemon string`: Daemon name within that code.
-- `PID int`: Running process ID.
-- `Health string`: Health endpoint address, if any.
-- `Project string`: Optional project label.
-- `Binary string`: Optional binary label.
-- `Started time.Time`: Start timestamp persisted in RFC3339Nano format.
-
-### `Registry`
-`struct`
-
-Filesystem-backed daemon registry that stores one JSON file per daemon entry.
-
-Exported fields:
-- None.
-
-### `Runner`
-`struct`
-
-Pipeline orchestrator that starts `RunSpec` processes through a `Service`.
-
-Exported fields:
-- None.
-
-### `RunSpec`
-`struct`
-
-One process specification for `Runner`.
-
-Fields:
-- `Name string`: Friendly name used for dependencies and result reporting.
-- `Command string`: Executable name.
-- `Args []string`: Command arguments.
-- `Dir string`: Working directory.
-- `Env []string`: Additional environment variables.
-- `After []string`: Dependency names that must complete before this spec can run in `RunAll`.
-- `AllowFailure bool`: When true, downstream work is not skipped because of this spec's failure.
-
-### `RunResult`
-`struct`
-
-Per-spec runner result.
-
-Fields:
-- `Name string`: Spec name.
-- `Spec RunSpec`: Original spec payload.
-- `ExitCode int`: Exit code from the managed process.
-- `Duration time.Duration`: Process duration or start-attempt duration.
-- `Output string`: Captured output returned from the managed process.
-- `Error error`: Start or orchestration error. For a started process that exits non-zero, this remains `nil`.
-- `Skipped bool`: Whether the spec was skipped instead of run.
-
-### `RunAllResult`
-`struct`
-
-Aggregate result returned by `RunAll`, `RunSequential`, and `RunParallel`.
-
-Fields:
-- `Results []RunResult`: Collected per-spec results.
-- `Duration time.Duration`: End-to-end runtime for the orchestration method.
-- `Passed int`: Count of results where `Passed()` is true.
-- `Failed int`: Count of non-skipped results that did not pass.
-- `Skipped int`: Count of skipped results.
-
-### `Service`
-`struct`
-
-Core service that owns managed processes and registers action handlers.
-
-Fields:
-- `*core.ServiceRuntime[Options]`: Embedded Core runtime used for lifecycle hooks and access to `Core()`.
-
-### `Options`
-`struct`
-
-Service configuration.
-
-Fields:
-- `BufferSize int`: Ring-buffer capacity for captured output. `Register` currently initializes this from `DefaultBufferSize`.
-
-### `Status`
-`type Status string`
-
-Named lifecycle-state type for a managed process.
-
-Exported values:
-- `StatusPending`: queued but not started.
-- `StatusRunning`: currently executing.
-- `StatusExited`: completed and waited.
-- `StatusFailed`: start or wait failure state.
-- `StatusKilled`: terminated by signal.
-
-### `Stream`
-`type Stream string`
-
-Named output-stream discriminator for process output events.
-
-Exported values:
-- `StreamStdout`: stdout line.
-- `StreamStderr`: stderr line.
-
-### `RunOptions`
-`struct`
-
-Execution settings accepted by `Service.StartWithOptions` and `Service.RunWithOptions`.
-
-Fields:
-- `Command string`: Executable name. Required by both start and run paths.
-- `Args []string`: Command arguments.
-- `Dir string`: Working directory.
-- `Env []string`: Additional environment entries appended to the command environment.
-- `DisableCapture bool`: Disables the managed-process ring buffer when true.
-- `Detach bool`: Starts the child in a separate process group and replaces the parent context with `context.Background()`.
-- `Timeout time.Duration`: Optional watchdog timeout that calls `Shutdown` after the duration elapses.
-- `GracePeriod time.Duration`: Delay between `SIGTERM` and fallback kill in `Shutdown`.
-- `KillGroup bool`: Requests process-group termination. The current service only enables this when `Detach` is also true.
-
-### `ProcessInfo`
-`struct`
-
-Serializable snapshot returned by `ManagedProcess.Info` and `Service` action lookups.
-
-Fields:
-- `ID string`: Managed-process identifier.
-- `Command string`: Executable name.
-- `Args []string`: Command arguments.
-- `Dir string`: Working directory.
-- `StartedAt time.Time`: Start timestamp.
-- `Running bool`: Convenience boolean derived from `Status`.
-- `Status Status`: Current lifecycle state.
-- `ExitCode int`: Exit status.
-- `Duration time.Duration`: Runtime duration.
-- `PID int`: Child PID, or `0` if no process handle is available.
-
-### `Info`
-`type alias of ProcessInfo`
-
-Compatibility alias that exposes the same fields as `ProcessInfo`.
-
-## Functions
-
-### Package Functions
-
-- `func Register(c *core.Core) core.Result`: Builds a `Service` with a fresh `core.Registry[*ManagedProcess]`, sets the buffer size to `DefaultBufferSize`, and returns the service in `Result.Value`.
-- `func NewRingBuffer(size int) *RingBuffer`: Allocates a fixed-capacity ring buffer of exactly `size` bytes.
-- `func NewDaemon(opts DaemonOptions) *Daemon`: Normalizes `ShutdownTimeout`, creates optional `PIDFile` and `HealthServer` helpers, and attaches any configured health checks.
-- `func NewHealthServer(addr string) *HealthServer`: Returns a health server with the supplied listen address and readiness initialized to `true`.
-- `func WaitForHealth(addr string, timeoutMs int) bool`: Polls `http://<addr>/health` every 200 ms until it gets HTTP 200 or the timeout expires.
-- `func NewPIDFile(path string) *PIDFile`: Returns a PID-file manager for `path`.
-- `func ReadPID(path string) (int, bool)`: Reads and parses a PID file, then uses signal `0` to report whether that PID is still alive.
-- `func NewRegistry(dir string) *Registry`: Returns a daemon registry rooted at `dir`.
-- `func DefaultRegistry() *Registry`: Returns a registry at `~/.core/daemons`, falling back to the OS temp directory if the home directory cannot be resolved.
-- `func NewRunner(svc *Service) *Runner`: Returns a runner bound to a specific `Service`.
-
-### `RingBuffer` Methods
-
-- `func (rb *RingBuffer) Write(p []byte) (n int, err error)`: Appends bytes one by one, advancing the circular window and overwriting the oldest bytes when capacity is exceeded.
-- `func (rb *RingBuffer) String() string`: Returns the current buffer contents in logical order as a string.
-- `func (rb *RingBuffer) Bytes() []byte`: Returns a copied byte slice of the current logical contents, or `nil` when the buffer is empty.
-- `func (rb *RingBuffer) Len() int`: Returns the number of bytes currently retained.
-- `func (rb *RingBuffer) Cap() int`: Returns the configured capacity.
-- `func (rb *RingBuffer) Reset()`: Clears the buffer indexes and full flag.
-
-### `Daemon` Methods
-
-- `func (d *Daemon) Start() error`: Acquires the PID file, starts the health server, marks the daemon running, and auto-registers it when `Registry` is configured. If a later step fails, it rolls back earlier setup.
-- `func (d *Daemon) Run(ctx context.Context) error`: Requires a started daemon, waits for `ctx.Done()`, and then calls `Stop`.
-- `func (d *Daemon) Stop() error`: Sets readiness false, shuts down the health server, releases the PID file, unregisters the daemon, and joins health or PID teardown errors with `core.ErrorJoin`.
-- `func (d *Daemon) SetReady(ready bool)`: Forwards readiness changes to the health server when one exists.
-- `func (d *Daemon) HealthAddr() string`: Returns the bound health-server address or `""` when health endpoints are disabled.
-
-### `HealthServer` Methods
-
-- `func (h *HealthServer) AddCheck(check HealthCheck)`: Appends a health-check callback under lock.
-- `func (h *HealthServer) SetReady(ready bool)`: Updates the readiness flag used by `/ready`.
-- `func (h *HealthServer) Start() error`: Installs `/health` and `/ready` handlers, listens on `addr`, stores the listener and `http.Server`, and serves in a goroutine.
-- `func (h *HealthServer) Stop(ctx context.Context) error`: Calls `Shutdown` on the underlying `http.Server` when started; otherwise returns `nil`.
-- `func (h *HealthServer) Addr() string`: Returns the actual bound listener address after `Start`, or the configured address before startup.
-
-### `PIDFile` Methods
-
-- `func (p *PIDFile) Acquire() error`: Rejects a live existing PID file, deletes stale state, creates the parent directory when needed, and writes the current process ID.
-- `func (p *PIDFile) Release() error`: Deletes the PID file.
-- `func (p *PIDFile) Path() string`: Returns the configured PID-file path.
-
-### `ManagedProcess` Methods
-
-- `func (p *ManagedProcess) Info() ProcessInfo`: Returns a snapshot containing public fields plus the current child PID.
-- `func (p *ManagedProcess) Output() string`: Returns captured output as a string, or `""` when capture is disabled.
-- `func (p *ManagedProcess) OutputBytes() []byte`: Returns captured output as bytes, or `nil` when capture is disabled.
-- `func (p *ManagedProcess) IsRunning() bool`: Reports running state by checking whether the `done` channel has closed.
-- `func (p *ManagedProcess) Wait() error`: Blocks for completion and then returns a wrapped error for failed-start, killed, or non-zero-exit outcomes.
-- `func (p *ManagedProcess) Done() <-chan struct{}`: Returns the completion channel.
-- `func (p *ManagedProcess) Kill() error`: Sends `SIGKILL` to the child, or to the entire process group when group killing is enabled.
-- `func (p *ManagedProcess) Shutdown() error`: Sends `SIGTERM`, waits for the configured grace period, and falls back to `Kill`. With no grace period configured, it immediately calls `Kill`.
-- `func (p *ManagedProcess) SendInput(input string) error`: Writes to the child's stdin pipe while the process is running.
-- `func (p *ManagedProcess) CloseStdin() error`: Closes the stdin pipe and clears the stored handle.
-- `func (p *ManagedProcess) Signal(sig os.Signal) error`: Sends an arbitrary signal while the process is in `StatusRunning`.
-
-### `Program` Methods
-
-- `func (p *Program) Find() error`: Resolves `Name` through `exec.LookPath`, stores the absolute path in `Path`, and wraps `ErrProgramNotFound` when lookup fails.
-- `func (p *Program) Run(ctx context.Context, args ...string) (string, error)`: Executes the program in the current working directory by delegating to `RunDir("", args...)`.
-- `func (p *Program) RunDir(ctx context.Context, dir string, args ...string) (string, error)`: Runs the program with combined stdout/stderr capture, trims the combined output, and returns that output even when the command fails.
-
-### `Registry` Methods
-
-- `func (r *Registry) Register(entry DaemonEntry) error`: Ensures the registry directory exists, defaults `Started` when zero, marshals the entry with the package's JSON writer, and writes one `<code>-<daemon>.json` file.
-- `func (r *Registry) Unregister(code, daemon string) error`: Deletes the registry file for the supplied daemon key.
-- `func (r *Registry) Get(code, daemon string) (*DaemonEntry, bool)`: Reads one entry, prunes invalid or stale files, and returns `(nil, false)` when the daemon is missing or dead.
-- `func (r *Registry) List() ([]DaemonEntry, error)`: Lists all JSON files in the registry directory, prunes invalid or stale entries, and returns only live daemons. A missing registry directory returns `nil, nil`.
-
-### `RunResult` and `RunAllResult` Methods
-
-- `func (r RunResult) Passed() bool`: Returns true only when the result is not skipped, has no `Error`, and has `ExitCode == 0`.
-- `func (r RunAllResult) Success() bool`: Returns true when `Failed == 0`, regardless of skipped count.
-
-### `Runner` Methods
-
-- `func (r *Runner) RunAll(ctx context.Context, specs []RunSpec) (*RunAllResult, error)`: Executes dependency-aware waves of specs, skips dependents after failing required dependencies, and marks circular or missing dependency sets as failed results with `ExitCode` 1.
-- `func (r *Runner) RunSequential(ctx context.Context, specs []RunSpec) (*RunAllResult, error)`: Runs specs in order and marks remaining specs skipped after the first disallowed failure.
-- `func (r *Runner) RunParallel(ctx context.Context, specs []RunSpec) (*RunAllResult, error)`: Runs all specs concurrently and aggregates counts after all goroutines finish.
-
-### `Service` Methods
-
-- `func (s *Service) OnStartup(ctx context.Context) core.Result`: Registers the Core actions `process.run`, `process.start`, `process.kill`, `process.list`, and `process.get`.
-- `func (s *Service) OnShutdown(ctx context.Context) core.Result`: Iterates all managed processes and calls `Kill` on each one.
-- `func (s *Service) Start(ctx context.Context, command string, args ...string) core.Result`: Convenience wrapper that builds `RunOptions` and delegates to `StartWithOptions`.
-- `func (s *Service) StartWithOptions(ctx context.Context, opts RunOptions) core.Result`: Starts a managed process, configures pipes, optional capture, detach and timeout behavior, stores it in the registry, emits `ActionProcessStarted`, streams stdout/stderr lines, and emits `ActionProcessExited` after completion.
-- `func (s *Service) Get(id string) (*ManagedProcess, error)`: Returns one managed process or `ErrProcessNotFound`.
-- `func (s *Service) List() []*ManagedProcess`: Returns all managed processes currently stored in the service registry.
-- `func (s *Service) Running() []*ManagedProcess`: Returns only processes whose `done` channel has not closed yet.
-- `func (s *Service) Kill(id string) error`: Kills the managed process by ID and emits `ActionProcessKilled`.
-- `func (s *Service) Remove(id string) error`: Deletes a completed process from the registry and rejects removal while it is still running.
-- `func (s *Service) Clear()`: Deletes every completed process from the registry.
-- `func (s *Service) Output(id string) (string, error)`: Returns the managed process's captured output.
-- `func (s *Service) Run(ctx context.Context, command string, args ...string) core.Result`: Convenience wrapper around `RunWithOptions`.
-- `func (s *Service) RunWithOptions(ctx context.Context, opts RunOptions) core.Result`: Executes an unmanaged one-shot command with `CombinedOutput`. On success it returns the output string in `Value`; on failure it returns a wrapped error in `Value` and sets `OK` false.

types.go

@@ -1,34 +1,49 @@
 // Package process provides process management with Core IPC integration.
 //
+// Example:
+//
+//	svc := process.NewService(process.Options{})
+//	proc, err := svc.Start(ctx, "echo", "hello")
+//
 // The process package enables spawning, monitoring, and controlling external
 // processes with output streaming via the Core ACTION system.
 //
 // # Getting Started
 //
-//	c := core.New(core.WithService(process.Register))
+//	// Register with Core
-//	_ = c.ServiceStartup(ctx, nil)
+//	core, _ := framework.New(
+//	    framework.WithName("process", process.NewService(process.Options{})),
+//	)
 //
-//	r := c.Process().Run(ctx, "go", "test", "./...")
+//	// Get service and run a process
-//	output := r.Value.(string)
+//	svc, err := framework.ServiceFor[*process.Service](core, "process")
+//	if err != nil {
+//	    return err
+//	}
+//	proc, err := svc.Start(ctx, "go", "test", "./...")
 //
 // # Listening for Events
 //
 // Process events are broadcast via Core.ACTION:
 //
-//	c.RegisterAction(func(c *core.Core, msg core.Message) core.Result {
+//	core.RegisterAction(func(c *framework.Core, msg framework.Message) error {
 //	    switch m := msg.(type) {
 //	    case process.ActionProcessOutput:
 //	        fmt.Print(m.Line)
 //	    case process.ActionProcessExited:
 //	        fmt.Printf("Exit code: %d\n", m.ExitCode)
 //	    }
-//	    return core.Result{OK: true}
+//	    return nil
 //	})
 package process
 
 import "time"
 
 // Status represents the process lifecycle state.
+//
+// Example:
+//
+//	if proc.Status == process.StatusKilled { return }
 type Status string
 
 const (
@@ -45,6 +60,10 @@ const (
 )
 
 // Stream identifies the output source.
+//
+// Example:
+//
+//	if event.Stream == process.StreamStdout { ... }
 type Stream string
 
 const (
@@ -55,6 +74,13 @@ const (
 )
 
 // RunOptions configures process execution.
+//
+// Example:
+//
+//	opts := process.RunOptions{
+//	    Command: "go",
+//	    Args: []string{"test", "./..."},
+//	}
 type RunOptions struct {
 	// Command is the executable to run.
 	Command string
@@ -85,8 +111,13 @@ type RunOptions struct {
 	KillGroup bool
 }
 
-// ProcessInfo provides a snapshot of process state without internal fields.
+// Info provides a snapshot of process state without internal fields.
-type ProcessInfo struct {
+//
+// Example:
+//
+//	info := proc.Info()
+//	fmt.Println(info.PID)
+type Info struct {
 	ID        string        `json:"id"`
 	Command   string        `json:"command"`
 	Args      []string      `json:"args"`
@@ -98,6 +129,3 @@ type ProcessInfo struct {
 	Duration  time.Duration `json:"duration"`
 	PID       int           `json:"pid"`
 }
-
-// Info is kept as a compatibility alias for ProcessInfo.
-type Info = ProcessInfo

ui/src/process-list.ts

@@ -3,7 +3,7 @@
 import { LitElement, html, css, nothing } from 'lit';
 import { customElement, property, state } from 'lit/decorators.js';
 import { connectProcessEvents, type ProcessEvent } from './shared/events.js';
-import type { ProcessInfo } from './shared/api.js';
+import { ProcessApi, type ProcessInfo } from './shared/api.js';
 
 /**
  * <core-process-list> — Running processes with status and actions.
@@ -14,9 +14,8 @@ import type { ProcessInfo } from './shared/api.js';
  * Emits `process-selected` event when a process row is clicked, carrying
  * the process ID for the output viewer.
  *
- * Note: Requires process-level REST endpoints (GET /processes, POST /processes/:id/kill)
+ * The list is seeded from the REST API and then kept in sync with the live
- * that are not yet in the provider. The element renders from WS events and local state
+ * process event stream when a WebSocket URL is configured.
- * until those endpoints are available.
  */
 @customElement('core-process-list')
 export class ProcessList extends LitElement {
@@ -193,11 +192,14 @@ export class ProcessList extends LitElement {
   @state() private loading = false;
   @state() private error = '';
   @state() private connected = false;
+  @state() private killing = new Set<string>();
 
+  private api!: ProcessApi;
   private ws: WebSocket | null = null;
 
   connectedCallback() {
     super.connectedCallback();
+    this.api = new ProcessApi(this.apiUrl);
     this.loadProcesses();
   }
 
@@ -207,25 +209,31 @@ export class ProcessList extends LitElement {
   }
 
   updated(changed: Map<string, unknown>) {
-    if (changed.has('wsUrl')) {
+    if (changed.has('apiUrl')) {
+      this.api = new ProcessApi(this.apiUrl);
+    }
+
+    if (changed.has('wsUrl') || changed.has('apiUrl')) {
       this.disconnect();
-      this.processes = [];
+      void this.loadProcesses();
-      this.loadProcesses();
     }
   }
 
   async loadProcesses() {
-    // The process list is built from the shared process event stream.
+    this.loading = true;
     this.error = '';
-    this.loading = false;
+    try {
-
+      this.processes = await this.api.listProcesses();
-    if (!this.wsUrl) {
+      if (this.wsUrl) {
-      this.processes = [];
-      return;
-    }
-
         this.connect();
       }
+    } catch (e: any) {
+      this.error = e.message ?? 'Failed to load processes';
+      this.processes = [];
+    } finally {
+      this.loading = false;
+    }
+  }
 
   private handleSelect(proc: ProcessInfo) {
     this.dispatchEvent(
@@ -237,21 +245,25 @@ export class ProcessList extends LitElement {
     );
   }
 
-  private formatUptime(started: string): string {
+  private async handleKill(proc: ProcessInfo) {
+    this.killing = new Set([...this.killing, proc.id]);
     try {
-      const ms = Date.now() - new Date(started).getTime();
+      await this.api.killProcess(proc.id);
-      const seconds = Math.floor(ms / 1000);
+      await this.loadProcesses();
-      if (seconds < 60) return `${seconds}s`;
+    } catch (e: any) {
-      const minutes = Math.floor(seconds / 60);
+      this.error = e.message ?? 'Failed to kill process';
-      if (minutes < 60) return `${minutes}m ${seconds % 60}s`;
+    } finally {
-      const hours = Math.floor(minutes / 60);
+      const next = new Set(this.killing);
-      return `${hours}h ${minutes % 60}m`;
+      next.delete(proc.id);
-    } catch {
+      this.killing = next;
-      return 'unknown';
     }
   }
 
   private connect() {
+    if (!this.wsUrl || this.ws) {
+      return;
+    }
+
     this.ws = connectProcessEvents(this.wsUrl, (event: ProcessEvent) => {
       this.applyEvent(event);
     });
@@ -274,10 +286,7 @@ export class ProcessList extends LitElement {
 
   private applyEvent(event: ProcessEvent) {
     const channel = event.channel ?? event.type ?? '';
-    const data = (event.data ?? {}) as Partial<ProcessInfo> & {
+    const data = (event.data ?? {}) as Partial<ProcessInfo> & { id?: string };
-      id?: string;
-      signal?: string;
-    };
 
     if (!data.id) {
       return;
@@ -286,36 +295,36 @@ export class ProcessList extends LitElement {
     const next = new Map(this.processes.map((proc) => [proc.id, proc] as const));
     const current = next.get(data.id);
 
-    if (channel === 'process.started') {
+    switch (channel) {
+      case 'process.started':
         next.set(data.id, this.normalizeProcess(data, current, 'running'));
-      this.processes = this.sortProcesses(next);
+        break;
-      return;
+      case 'process.exited':
-    }
+        next.set(data.id, this.normalizeProcess(data, current, data.exitCode === -1 && data.error ? 'failed' : 'exited'));
-
+        break;
-    if (channel === 'process.exited') {
+      case 'process.killed':
-      next.set(data.id, this.normalizeProcess(data, current, 'exited'));
-      this.processes = this.sortProcesses(next);
-      return;
-    }
-
-    if (channel === 'process.killed') {
         next.set(data.id, this.normalizeProcess(data, current, 'killed'));
-      this.processes = this.sortProcesses(next);
+        break;
+      default:
         return;
     }
+
+    this.processes = this.sortProcesses(next);
   }
 
   private normalizeProcess(
-    data: Partial<ProcessInfo> & { id: string; signal?: string },
+    data: Partial<ProcessInfo> & { id: string; error?: unknown },
     current: ProcessInfo | undefined,
     status: ProcessInfo['status'],
   ): ProcessInfo {
+    const startedAt = data.startedAt ?? current?.startedAt ?? new Date().toISOString();
     return {
       id: data.id,
       command: data.command ?? current?.command ?? '',
       args: data.args ?? current?.args ?? [],
       dir: data.dir ?? current?.dir ?? '',
-      startedAt: data.startedAt ?? current?.startedAt ?? new Date().toISOString(),
+      startedAt,
+      running: status === 'running',
       status,
       exitCode: data.exitCode ?? current?.exitCode ?? (status === 'killed' ? -1 : 0),
       duration: data.duration ?? current?.duration ?? 0,
@@ -324,9 +333,28 @@ export class ProcessList extends LitElement {
   }
 
   private sortProcesses(processes: Map<string, ProcessInfo>): ProcessInfo[] {
-    return [...processes.values()].sort(
+    return [...processes.values()].sort((a, b) => {
-      (a, b) => new Date(b.startedAt).getTime() - new Date(a.startedAt).getTime(),
+      const aStarted = new Date(a.startedAt).getTime();
-    );
+      const bStarted = new Date(b.startedAt).getTime();
+      if (aStarted === bStarted) {
+        return a.id.localeCompare(b.id);
+      }
+      return aStarted - bStarted;
+    });
+  }
+
+  private formatUptime(started: string): string {
+    try {
+      const ms = Date.now() - new Date(started).getTime();
+      const seconds = Math.floor(ms / 1000);
+      if (seconds < 60) return `${seconds}s`;
+      const minutes = Math.floor(seconds / 60);
+      if (minutes < 60) return `${minutes}m ${seconds % 60}s`;
+      const hours = Math.floor(minutes / 60);
+      return `${hours}h ${minutes % 60}m`;
+    } catch {
+      return 'unknown';
+    }
   }
 
   render() {
@@ -341,9 +369,9 @@ export class ProcessList extends LitElement {
             <div class="info-notice">
               ${this.wsUrl
                 ? this.connected
-                  ? 'Waiting for process events from the WebSocket feed.'
+                  ? 'Receiving live process updates.'
                   : 'Connecting to the process event stream...'
-                : 'Set a WebSocket URL to receive live process events.'}
+                : 'Managed processes are loaded from the process REST API.'}
             </div>
             <div class="empty">No managed processes.</div>
           `
@@ -379,12 +407,13 @@ export class ProcessList extends LitElement {
                           <div class="item-actions">
                             <button
                               class="kill-btn"
-                              disabled
+                              ?disabled=${this.killing.has(proc.id)}
                               @click=${(e: Event) => {
                                 e.stopPropagation();
+                                void this.handleKill(proc);
                               }}
                             >
-                              Live only
+                              ${this.killing.has(proc.id) ? 'Killing\u2026' : 'Kill'}
                             </button>
                           </div>
                         `

ui/src/process-output.ts

@@ -3,6 +3,7 @@
 import { LitElement, html, css, nothing } from 'lit';
 import { customElement, property, state } from 'lit/decorators.js';
 import { connectProcessEvents, type ProcessEvent } from './shared/events.js';
+import { ProcessApi } from './shared/api.js';
 
 interface OutputLine {
   text: string;
@@ -131,14 +132,15 @@ export class ProcessOutput extends LitElement {
   @state() private lines: OutputLine[] = [];
   @state() private autoScroll = true;
   @state() private connected = false;
+  @state() private loadingSnapshot = false;
 
   private ws: WebSocket | null = null;
+  private api = new ProcessApi(this.apiUrl);
+  private syncToken = 0;
 
   connectedCallback() {
     super.connectedCallback();
-    if (this.wsUrl && this.processId) {
+    this.syncSources();
-      this.connect();
-    }
   }
 
   disconnectedCallback() {
@@ -147,12 +149,12 @@ export class ProcessOutput extends LitElement {
   }
 
   updated(changed: Map<string, unknown>) {
-    if (changed.has('processId') || changed.has('wsUrl')) {
+    if (changed.has('apiUrl')) {
-      this.disconnect();
+      this.api = new ProcessApi(this.apiUrl);
-      this.lines = [];
-      if (this.wsUrl && this.processId) {
-        this.connect();
     }
+
+    if (changed.has('processId') || changed.has('wsUrl') || changed.has('apiUrl')) {
+      this.syncSources();
     }
 
     if (this.autoScroll) {
@@ -160,6 +162,66 @@ export class ProcessOutput extends LitElement {
     }
   }
 
+  private syncSources() {
+    this.disconnect();
+    this.lines = [];
+    if (!this.processId) {
+      return;
+    }
+
+    void this.loadSnapshotAndConnect();
+  }
+
+  private async loadSnapshotAndConnect() {
+    const token = ++this.syncToken;
+
+    if (!this.processId) {
+      return;
+    }
+
+    if (this.apiUrl) {
+      this.loadingSnapshot = true;
+      try {
+        const output = await this.api.getProcessOutput(this.processId);
+        if (token !== this.syncToken) {
+          return;
+        }
+        const snapshot = this.linesFromOutput(output);
+        if (snapshot.length > 0) {
+          this.lines = snapshot;
+        }
+      } catch {
+        // Ignore missing snapshot data and continue with live streaming.
+      } finally {
+        if (token === this.syncToken) {
+          this.loadingSnapshot = false;
+        }
+      }
+    }
+
+    if (token === this.syncToken && this.wsUrl) {
+      this.connect();
+    }
+  }
+
+  private linesFromOutput(output: string): OutputLine[] {
+    if (!output) {
+      return [];
+    }
+
+    const normalized = output.replace(/\r\n/g, '\n');
+    const parts = normalized.split('\n');
+    if (parts.length > 0 && parts[parts.length - 1] === '') {
+      parts.pop();
+    }
+
+    return parts.map((text) => ({
+      text,
+      stream: 'stdout' as const,
+      timestamp: Date.now(),
+    }));
+  }
+
   private connect() {
     this.ws = connectProcessEvents(this.wsUrl, (event: ProcessEvent) => {
       const data = event.data;
@@ -231,7 +293,9 @@ export class ProcessOutput extends LitElement {
         </div>
       </div>
       <div class="output-body">
-        ${this.lines.length === 0
+        ${this.loadingSnapshot && this.lines.length === 0
+          ? html`<div class="waiting">Loading snapshot\u2026</div>`
+          : this.lines.length === 0
           ? html`<div class="waiting">Waiting for output\u2026</div>`
           : this.lines.map(
               (line) => html`

ui/src/process-runner.ts

@@ -9,10 +9,6 @@ import type { RunResult, RunAllResult } from './shared/api.js';
  *
  * Shows RunSpec execution results with pass/fail/skip badges, duration,
  * dependency chains, and aggregate summary.
- *
- * Note: Pipeline runner REST endpoints are not yet in the provider.
- * This element renders from WS events and accepts data via properties
- * until those endpoints are available.
  */
 @customElement('core-process-runner')
 export class ProcessRunner extends LitElement {
@@ -223,8 +219,9 @@ export class ProcessRunner extends LitElement {
   }
 
   async loadResults() {
-    // Pipeline runner REST endpoints are not yet available.
+    // Results are supplied via the `result` property. The REST API can be
-    // Results can be passed in via the `result` property.
+    // used by the surrounding application to execute a pipeline and then
+    // assign the returned data here.
   }
 
   private toggleOutput(name: string) {
@@ -253,9 +250,7 @@ export class ProcessRunner extends LitElement {
     if (!this.result) {
       return html`
         <div class="info-notice">
-          Pipeline runner endpoints are pending. Pass pipeline results via the
+          Pass pipeline results via the <code>result</code> property.
-          <code>result</code> property, or results will appear here once the REST
-          API for pipeline execution is available.
         </div>
         <div class="empty">No pipeline results.</div>
       `;

ui/src/shared/api.ts

@@ -31,12 +31,26 @@ export interface ProcessInfo {
   args: string[];
   dir: string;
   startedAt: string;
+  running: boolean;
   status: 'pending' | 'running' | 'exited' | 'failed' | 'killed';
   exitCode: number;
   duration: number;
   pid: number;
 }
 
+/**
+ * RunSpec payload for pipeline execution.
+ */
+export interface RunSpec {
+  name: string;
+  command: string;
+  args?: string[];
+  dir?: string;
+  env?: string[];
+  after?: string[];
+  allowFailure?: boolean;
+}
+
 /**
  * Pipeline run result for a single spec.
  */
@@ -62,6 +76,21 @@ export interface RunAllResult {
   success: boolean;
 }
 
+/**
+ * Process start and run payload shared by the control endpoints.
+ */
+export interface ProcessControlRequest {
+  command: string;
+  args?: string[];
+  dir?: string;
+  env?: string[];
+  disableCapture?: boolean;
+  detach?: boolean;
+  timeout?: number;
+  gracePeriod?: number;
+  killGroup?: boolean;
+}
+
 /**
  * ProcessApi provides a typed fetch wrapper for the /api/process/* endpoints.
  */
@@ -102,4 +131,86 @@ export class ProcessApi {
   healthCheck(code: string, daemon: string): Promise<HealthResult> {
     return this.request<HealthResult>(`/daemons/${code}/${daemon}/health`);
   }
+
+  /** List all managed processes. */
+  listProcesses(runningOnly = false): Promise<ProcessInfo[]> {
+    const query = runningOnly ? '?runningOnly=true' : '';
+    return this.request<ProcessInfo[]>(`/processes${query}`);
+  }
+
+  /** Get a single managed process by ID. */
+  getProcess(id: string): Promise<ProcessInfo> {
+    return this.request<ProcessInfo>(`/processes/${id}`);
+  }
+
+  /** Get the captured stdout/stderr for a managed process by ID. */
+  getProcessOutput(id: string): Promise<string> {
+    return this.request<string>(`/processes/${id}/output`);
+  }
+
+  /** Start a managed process asynchronously. */
+  startProcess(opts: ProcessControlRequest): Promise<ProcessInfo> {
+    return this.request<ProcessInfo>('/processes', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify(opts),
+    });
+  }
+
+  /** Run a managed process synchronously and return its combined output. */
+  runProcess(opts: ProcessControlRequest): Promise<string> {
+    return this.request<string>('/processes/run', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify(opts),
+    });
+  }
+
+  /** Wait for a managed process to exit and return its final snapshot. */
+  waitProcess(id: string): Promise<ProcessInfo> {
+    return this.request<ProcessInfo>(`/processes/${id}/wait`, {
+      method: 'POST',
+    });
+  }
+
+  /** Write input to a managed process stdin pipe. */
+  inputProcess(id: string, input: string): Promise<{ written: boolean }> {
+    return this.request<{ written: boolean }>(`/processes/${id}/input`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ input }),
+    });
+  }
+
+  /** Close a managed process stdin pipe. */
+  closeProcessStdin(id: string): Promise<{ closed: boolean }> {
+    return this.request<{ closed: boolean }>(`/processes/${id}/close-stdin`, {
+      method: 'POST',
+    });
+  }
+
+  /** Kill a managed process by ID. */
+  killProcess(id: string): Promise<{ killed: boolean }> {
+    return this.request<{ killed: boolean }>(`/processes/${id}/kill`, {
+      method: 'POST',
+    });
+  }
+
+  /** Send a signal to a managed process by ID. */
+  signalProcess(id: string, signal: string | number): Promise<{ signalled: boolean }> {
+    return this.request<{ signalled: boolean }>(`/processes/${id}/signal`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ signal: String(signal) }),
+    });
+  }
+
+  /** Run a process pipeline using the configured runner. */
+  runPipeline(mode: 'all' | 'sequential' | 'parallel', specs: RunSpec[]): Promise<RunAllResult> {
+    return this.request<RunAllResult>('/pipelines/run', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ mode, specs }),
+    });
+  }
 }