diff --git a/core.go b/core.go
deleted file mode 100644
index 96b3bb1..0000000
--- a/core.go
+++ /dev/null
@@ -1,108 +0,0 @@
-// SPDX-License-Identifier: EUPL-1.2
-
-// Package core is the Core framework for Go.
-//
-// Single import, single struct, everything accessible:
-//
-//	import core "forge.lthn.ai/core/go"
-//
-//	c, _ := core.New(
-//	    core.WithAssets(myEmbed),
-//	    core.WithService(myFactory),
-//	)
-//
-//	// DI
-//	svc, _ := core.ServiceFor[*MyService](c, "name")
-//
-//	// Mount
-//	content, _ := c.Mnt().ReadString("persona/secops/developer.md")
-//	c.Mnt().Extract(targetDir, data)
-//
-//	// IPC
-//	c.ACTION(msg)
-package core
-
-import (
-	di "forge.lthn.ai/core/go/pkg/core"
-)
-
-// --- Types ---
-
-// Core is the central application container.
-type Core = di.Core
-
-// Option configures a Core instance.
-type Option = di.Option
-
-// Message is the IPC message type.
-type Message = di.Message
-
-// Sub is a scoped view of an embedded filesystem.
-type Sub = di.Sub
-
-// ExtractOptions configures template extraction.
-type ExtractOptions = di.ExtractOptions
-
-// Startable is implemented by services with startup logic.
-type Startable = di.Startable
-
-// Stoppable is implemented by services with shutdown logic.
-type Stoppable = di.Stoppable
-
-// LocaleProvider provides locale filesystems for i18n.
-type LocaleProvider = di.LocaleProvider
-
-// ServiceRuntime is the base for services with typed options.
-type ServiceRuntime[T any] = di.ServiceRuntime[T]
-
-// --- Constructor + Options ---
-
-// New creates a new Core instance.
-var New = di.New
-
-// WithService registers a service factory.
-var WithService = di.WithService
-
-// WithName registers a named service factory.
-var WithName = di.WithName
-
-// WithAssets mounts an embedded filesystem.
-var WithAssets = di.WithAssets
-
-// WithMount mounts an embedded filesystem at a subdirectory.
-var WithMount = di.WithMount
-
-// WithServiceLock prevents late service registration.
-var WithServiceLock = di.WithServiceLock
-
-// WithApp sets the GUI runtime.
-var WithApp = di.WithApp
-
-// Mount creates a scoped view of an embed.FS at basedir.
-var Mount = di.Mount
-
-// --- Generic Functions ---
-
-// ServiceFor retrieves a typed service by name.
-func ServiceFor[T any](c *Core, name string) (T, error) {
-	return di.ServiceFor[T](c, name)
-}
-
-// E creates a structured error.
-var E = di.E
-
-// --- Configuration (core.Etc) ---
-
-// Etc is the configuration and feature flags store.
-type Etc = di.Etc
-
-// NewEtc creates a standalone configuration store.
-var NewEtc = di.NewEtc
-
-// Var is a typed optional variable (set/unset/get).
-type Var[T any] = di.Var[T]
-
-// NewVar creates a Var with the given value.
-func NewVar[T any](val T) Var[T] {
-	return di.NewVar(val)
-}
diff --git a/go.mod b/go.mod
index 2620c9e..e6140ad 100644
--- a/go.mod
+++ b/go.mod
@@ -2,14 +2,13 @@ module forge.lthn.ai/core/go
 
 go 1.26.0
 
-require (
-	forge.lthn.ai/core/go-io v0.1.6
-	forge.lthn.ai/core/go-log v0.0.4
-	github.com/stretchr/testify v1.11.1
-)
+require github.com/stretchr/testify v1.11.1
 
 require (
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/kr/pretty v0.3.1 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/rogpeppe/go-internal v1.14.1 // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/go.sum b/go.sum
index b83e5f7..5a10c39 100644
--- a/go.sum
+++ b/go.sum
@@ -1,15 +1,17 @@
-forge.lthn.ai/core/go-io v0.1.6 h1:RByYeP829HFqR2yLg5iBM5dGHKzPFYc+udl/Y1DZIRs=
-forge.lthn.ai/core/go-io v0.1.6/go.mod h1:3MSuQZuzhCi6aefECQ/LxhM8ooVLam1KgEvgeEjYZVc=
-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/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
 github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
 github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7so1lCWt35ZSgc=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
diff --git a/pkg/mnt/extract.go b/pkg/mnt/extract.go
deleted file mode 100644
index 797f983..0000000
--- a/pkg/mnt/extract.go
+++ /dev/null
@@ -1,194 +0,0 @@
-// SPDX-License-Identifier: EUPL-1.2
-
-package mnt
-
-import (
-	"bytes"
-	"io"
-	"io/fs"
-	"os"
-	"path/filepath"
-	"strings"
-	"text/template"
-)
-
-// ExtractOptions configures template extraction.
-type ExtractOptions struct {
-	// TemplateFilters identifies template files by substring match.
-	// Default: [".tmpl"]
-	TemplateFilters []string
-
-	// IgnoreFiles is a set of filenames to skip during extraction.
-	IgnoreFiles map[string]struct{}
-
-	// RenameFiles maps original filenames to new names.
-	RenameFiles map[string]string
-}
-
-// Extract copies a template directory from an fs.FS to targetDir,
-// processing Go text/template in filenames and file contents.
-//
-// Files containing a template filter substring (default: ".tmpl") have
-// their contents processed through text/template with the given data.
-// The filter is stripped from the output filename.
-//
-// Directory and file names can contain Go template expressions:
-// {{.Name}}/main.go → myproject/main.go
-//
-// Data can be any struct or map[string]string for template substitution.
-func Extract(fsys fs.FS, targetDir string, data any, opts ...ExtractOptions) error {
-	opt := ExtractOptions{
-		TemplateFilters: []string{".tmpl"},
-		IgnoreFiles:     make(map[string]struct{}),
-		RenameFiles:     make(map[string]string),
-	}
-	if len(opts) > 0 {
-		if len(opts[0].TemplateFilters) > 0 {
-			opt.TemplateFilters = opts[0].TemplateFilters
-		}
-		if opts[0].IgnoreFiles != nil {
-			opt.IgnoreFiles = opts[0].IgnoreFiles
-		}
-		if opts[0].RenameFiles != nil {
-			opt.RenameFiles = opts[0].RenameFiles
-		}
-	}
-
-	// Ensure target directory exists
-	targetDir, err := filepath.Abs(targetDir)
-	if err != nil {
-		return err
-	}
-	if err := os.MkdirAll(targetDir, 0755); err != nil {
-		return err
-	}
-
-	// Categorise files
-	var dirs []string
-	var templateFiles []string
-	var standardFiles []string
-
-	err = fs.WalkDir(fsys, ".", func(path string, d fs.DirEntry, err error) error {
-		if err != nil {
-			return err
-		}
-		if path == "." {
-			return nil
-		}
-		if d.IsDir() {
-			dirs = append(dirs, path)
-			return nil
-		}
-		filename := filepath.Base(path)
-		if _, ignored := opt.IgnoreFiles[filename]; ignored {
-			return nil
-		}
-		if isTemplate(filename, opt.TemplateFilters) {
-			templateFiles = append(templateFiles, path)
-		} else {
-			standardFiles = append(standardFiles, path)
-		}
-		return nil
-	})
-	if err != nil {
-		return err
-	}
-
-	// Create directories (names may contain templates)
-	for _, dir := range dirs {
-		target := renderPath(filepath.Join(targetDir, dir), data)
-		if err := os.MkdirAll(target, 0755); err != nil {
-			return err
-		}
-	}
-
-	// Process template files
-	for _, path := range templateFiles {
-		tmpl, err := template.ParseFS(fsys, path)
-		if err != nil {
-			return err
-		}
-
-		targetFile := renderPath(filepath.Join(targetDir, path), data)
-
-		// Strip template filters from filename
-		dir := filepath.Dir(targetFile)
-		name := filepath.Base(targetFile)
-		for _, filter := range opt.TemplateFilters {
-			name = strings.ReplaceAll(name, filter, "")
-		}
-		if renamed := opt.RenameFiles[name]; renamed != "" {
-			name = renamed
-		}
-		targetFile = filepath.Join(dir, name)
-
-		f, err := os.Create(targetFile)
-		if err != nil {
-			return err
-		}
-		if err := tmpl.Execute(f, data); err != nil {
-			f.Close()
-			return err
-		}
-		f.Close()
-	}
-
-	// Copy standard files
-	for _, path := range standardFiles {
-		name := filepath.Base(path)
-		if renamed := opt.RenameFiles[name]; renamed != "" {
-			path = filepath.Join(filepath.Dir(path), renamed)
-		}
-		target := renderPath(filepath.Join(targetDir, path), data)
-		if err := copyFile(fsys, path, target); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func isTemplate(filename string, filters []string) bool {
-	for _, f := range filters {
-		if strings.Contains(filename, f) {
-			return true
-		}
-	}
-	return false
-}
-
-func renderPath(path string, data any) string {
-	if data == nil {
-		return path
-	}
-	tmpl, err := template.New("path").Parse(path)
-	if err != nil {
-		return path
-	}
-	var buf bytes.Buffer
-	if err := tmpl.Execute(&buf, data); err != nil {
-		return path
-	}
-	return buf.String()
-}
-
-func copyFile(fsys fs.FS, source, target string) error {
-	s, err := fsys.Open(source)
-	if err != nil {
-		return err
-	}
-	defer s.Close()
-
-	if err := os.MkdirAll(filepath.Dir(target), 0755); err != nil {
-		return err
-	}
-
-	d, err := os.Create(target)
-	if err != nil {
-		return err
-	}
-	defer d.Close()
-
-	_, err = io.Copy(d, s)
-	return err
-}
diff --git a/pkg/mnt/mnt.go b/pkg/mnt/mnt.go
deleted file mode 100644
index 5acb4f6..0000000
--- a/pkg/mnt/mnt.go
+++ /dev/null
@@ -1,86 +0,0 @@
-// SPDX-License-Identifier: EUPL-1.2
-
-// Package mnt provides mount operations for the Core framework.
-//
-// Mount operations attach data to/from binaries and watch live filesystems:
-//
-//   - FS: mount an embed.FS subdirectory for scoped access
-//   - Extract: extract a template directory with variable substitution
-//   - Watch: observe filesystem changes (file watcher)
-//
-// Zero external dependencies. All operations use stdlib only.
-//
-// Usage:
-//
-//	sub, _ := mnt.FS(myEmbed, "lib/persona")
-//	content, _ := sub.ReadFile("secops/developer.md")
-//
-//	mnt.Extract(sub, "/tmp/workspace", map[string]string{"Name": "myproject"})
-package mnt
-
-import (
-	"embed"
-	"io/fs"
-	"path/filepath"
-)
-
-// Sub wraps an embed.FS with a basedir for scoped access.
-// All paths are relative to basedir.
-type Sub struct {
-	basedir string
-	fs      embed.FS
-}
-
-// FS creates a scoped view of an embed.FS anchored at basedir.
-// Returns error if basedir doesn't exist in the embedded filesystem.
-func FS(efs embed.FS, basedir string) (*Sub, error) {
-	s := &Sub{fs: efs, basedir: basedir}
-	// Verify the basedir exists
-	if _, err := s.ReadDir("."); err != nil {
-		return nil, err
-	}
-	return s, nil
-}
-
-func (s *Sub) path(name string) string {
-	return filepath.ToSlash(filepath.Join(s.basedir, name))
-}
-
-// Open opens the named file for reading.
-func (s *Sub) Open(name string) (fs.File, error) {
-	return s.fs.Open(s.path(name))
-}
-
-// ReadDir reads the named directory.
-func (s *Sub) ReadDir(name string) ([]fs.DirEntry, error) {
-	return s.fs.ReadDir(s.path(name))
-}
-
-// ReadFile reads the named file.
-func (s *Sub) ReadFile(name string) ([]byte, error) {
-	return s.fs.ReadFile(s.path(name))
-}
-
-// ReadString reads the named file as a string.
-func (s *Sub) ReadString(name string) (string, error) {
-	data, err := s.ReadFile(name)
-	if err != nil {
-		return "", err
-	}
-	return string(data), nil
-}
-
-// Sub returns a new Sub anchored at a subdirectory within this Sub.
-func (s *Sub) Sub(subDir string) (*Sub, error) {
-	return FS(s.fs, s.path(subDir))
-}
-
-// Embed returns the underlying embed.FS.
-func (s *Sub) Embed() embed.FS {
-	return s.fs
-}
-
-// BaseDir returns the basedir this Sub is anchored at.
-func (s *Sub) BaseDir() string {
-	return s.basedir
-}
diff --git a/pkg/mnt/mnt_test.go b/pkg/mnt/mnt_test.go
deleted file mode 100644
index 0d65e38..0000000
--- a/pkg/mnt/mnt_test.go
+++ /dev/null
@@ -1,106 +0,0 @@
-// SPDX-License-Identifier: EUPL-1.2
-
-package mnt_test
-
-import (
-	"embed"
-	"os"
-	"testing"
-
-	"forge.lthn.ai/core/go/pkg/mnt"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-//go:embed testdata
-var testFS embed.FS
-
-func TestFS_Good(t *testing.T) {
-	sub, err := mnt.FS(testFS, "testdata")
-	require.NoError(t, err)
-	assert.Equal(t, "testdata", sub.BaseDir())
-}
-
-func TestFS_Bad_InvalidDir(t *testing.T) {
-	_, err := mnt.FS(testFS, "nonexistent")
-	assert.Error(t, err)
-}
-
-func TestSub_ReadFile_Good(t *testing.T) {
-	sub, err := mnt.FS(testFS, "testdata")
-	require.NoError(t, err)
-
-	data, err := sub.ReadFile("hello.txt")
-	require.NoError(t, err)
-	assert.Equal(t, "hello world\n", string(data))
-}
-
-func TestSub_ReadString_Good(t *testing.T) {
-	sub, err := mnt.FS(testFS, "testdata")
-	require.NoError(t, err)
-
-	content, err := sub.ReadString("hello.txt")
-	require.NoError(t, err)
-	assert.Equal(t, "hello world\n", content)
-}
-
-func TestSub_ReadDir_Good(t *testing.T) {
-	sub, err := mnt.FS(testFS, "testdata")
-	require.NoError(t, err)
-
-	entries, err := sub.ReadDir(".")
-	require.NoError(t, err)
-	assert.True(t, len(entries) >= 1)
-}
-
-func TestSub_Sub_Good(t *testing.T) {
-	sub, err := mnt.FS(testFS, "testdata")
-	require.NoError(t, err)
-
-	nested, err := sub.Sub("subdir")
-	require.NoError(t, err)
-
-	content, err := nested.ReadString("nested.txt")
-	require.NoError(t, err)
-	assert.Equal(t, "nested content\n", content)
-}
-
-func TestExtract_Good(t *testing.T) {
-	sub, err := mnt.FS(testFS, "testdata/template")
-	require.NoError(t, err)
-
-	targetDir := t.TempDir()
-	err = mnt.Extract(sub, targetDir, map[string]string{
-		"Name":   "myproject",
-		"Module": "forge.lthn.ai/core/myproject",
-	})
-	require.NoError(t, err)
-
-	// Check template was processed
-	readme, err := os.ReadFile(targetDir + "/README.md")
-	require.NoError(t, err)
-	assert.Contains(t, string(readme), "myproject project")
-
-	// Check go.mod template was processed
-	gomod, err := os.ReadFile(targetDir + "/go.mod")
-	require.NoError(t, err)
-	assert.Contains(t, string(gomod), "module forge.lthn.ai/core/myproject")
-
-	// Check non-template was copied as-is
-	main, err := os.ReadFile(targetDir + "/main.go")
-	require.NoError(t, err)
-	assert.Equal(t, "package main\n", string(main))
-}
-
-func TestExtract_Good_NoData(t *testing.T) {
-	sub, err := mnt.FS(testFS, "testdata")
-	require.NoError(t, err)
-
-	targetDir := t.TempDir()
-	err = mnt.Extract(sub, targetDir, nil)
-	require.NoError(t, err)
-
-	data, err := os.ReadFile(targetDir + "/hello.txt")
-	require.NoError(t, err)
-	assert.Equal(t, "hello world\n", string(data))
-}
diff --git a/pkg/mnt/testdata/hello.txt b/pkg/mnt/testdata/hello.txt
deleted file mode 100644
index 3b18e51..0000000
--- a/pkg/mnt/testdata/hello.txt
+++ /dev/null
@@ -1 +0,0 @@
-hello world
diff --git a/pkg/mnt/testdata/subdir/nested.txt b/pkg/mnt/testdata/subdir/nested.txt
deleted file mode 100644
index ca281f5..0000000
--- a/pkg/mnt/testdata/subdir/nested.txt
+++ /dev/null
@@ -1 +0,0 @@
-nested content
diff --git a/pkg/mnt/testdata/template/README.md.tmpl b/pkg/mnt/testdata/template/README.md.tmpl
deleted file mode 100644
index fdc89c8..0000000
--- a/pkg/mnt/testdata/template/README.md.tmpl
+++ /dev/null
@@ -1 +0,0 @@
-{{.Name}} project
diff --git a/pkg/mnt/testdata/template/go.mod.tmpl b/pkg/mnt/testdata/template/go.mod.tmpl
deleted file mode 100644
index 9f840df..0000000
--- a/pkg/mnt/testdata/template/go.mod.tmpl
+++ /dev/null
@@ -1 +0,0 @@
-module {{.Module}}
diff --git a/pkg/mnt/testdata/template/main.go b/pkg/mnt/testdata/template/main.go
deleted file mode 100644
index 06ab7d0..0000000
--- a/pkg/mnt/testdata/template/main.go
+++ /dev/null
@@ -1 +0,0 @@
-package main