docs(process): annotate sync as AX-6 structural exception per RFC §2 (#296)

sync + sync/atomic annotations across 13 files in go-process. health.go
is committed separately via #298 (combined sync annotation + fmt/strings
banned-import purge).

Co-authored-by: Codex <noreply@openai.com>
Closes tasks.lthn.sh/view.php?id=296

buffer.go

@@ -1,6 +1,9 @@
 package process
 
-import "sync"
+import (
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
+	"sync"
+)
 
 // RingBuffer is a fixed-size circular buffer that overwrites old data.
 // Thread-safe for concurrent reads and writes.

daemon.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"os"
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
 	"sync"
 	"time"
 

daemon_test.go

@@ -5,6 +5,7 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
 	"sync"
 	"testing"
 	"time"

exec/exec_test.go

@@ -7,6 +7,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
 	"sync"
 	"testing"
 	"time"

exec/logger.go

@@ -1,6 +1,9 @@
 package exec
 
-import "sync"
+import (
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
+	"sync"
+)
 
 // Logger interface for command execution logging.
 // Compatible with pkg/log.Logger and other structured loggers.

global_test.go

@@ -3,6 +3,7 @@ package process
 import (
 	"context"
 	"os/exec"
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
 	"sync"
 	"syscall"
 	"testing"

pidfile.go

@@ -4,6 +4,7 @@ import (
 	"path/filepath"
 	"strconv"
 	"strings"
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
 	"sync"
 	"syscall"
 

pkg/api/provider.go

@@ -9,13 +9,14 @@ import (
 	"net/http"
 	"os"
 	"strconv"
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
 	"sync"
 	"syscall"
 	"time"
 
-	"dappco.re/go/core"
 	"dappco.re/go/api"
 	"dappco.re/go/api/pkg/provider"
+	"dappco.re/go/core"
 	coreerr "dappco.re/go/log"
 	process "dappco.re/go/process"
 	"dappco.re/go/ws"

process.go

@@ -9,7 +9,7 @@ import (
 	"os"
 	// Note: banned-imports exception: os/exec is intrinsic to process management in THE implementation of core.Process, which cannot depend on itself.
 	"os/exec"
-	// Note: banned-imports exception: synchronization is intrinsic to this core.Process primitive; go-process cannot depend on downstream core.* helpers.
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
 	"sync"
 	// Note: banned-imports exception: syscall is intrinsic to process management in THE implementation of core.Process, which cannot depend on itself.
 	"syscall"

process_global.go

@@ -3,7 +3,9 @@ package process
 import (
 	"context"
 	"os"
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
 	"sync"
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
 	"sync/atomic"
 
 	"dappco.re/go/core"

runner.go

@@ -2,6 +2,7 @@ package process
 
 import (
 	"context"
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
 	"sync"
 	"time"
 

service.go

@@ -9,7 +9,7 @@ import (
 	// Note: banned-imports exception: os/exec is intrinsic to process management in THE implementation of core.Process, which cannot depend on itself.
 	"os/exec"
 	"slices"
-	// Note: banned-imports exception: synchronization is intrinsic to this core.Process primitive; go-process cannot depend on downstream core.* helpers.
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
 	"sync"
 	// Note: banned-imports exception: syscall is intrinsic to process management in THE implementation of core.Process, which cannot depend on itself.
 	"syscall"

service_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"os/exec"
 	"strings"
+	// Note: AX-6 — internal concurrency primitive; structural per RFC §2
 	"sync"
 	"syscall"
 	"testing"