chore(io): Migrate internal/cmd/docs/* to Medium abstraction

Fixes #113

internal/cmd/docs/cmd_scan.go

@@ -9,6 +9,7 @@ import (
 	"github.com/host-uk/core/internal/cmd/workspace"
 	"github.com/host-uk/core/pkg/cli"
 	"github.com/host-uk/core/pkg/i18n"
+	"github.com/host-uk/core/pkg/io"
 	"github.com/host-uk/core/pkg/repos"
 )
 
@@ -93,28 +94,29 @@ func scanRepoDocs(repo *repos.Repo) RepoDocInfo {
 
 	// Check for README.md
 	readme := filepath.Join(repo.Path, "README.md")
-	if _, err := os.Stat(readme); err == nil {
+	if io.Local.IsFile(readme) {
 		info.Readme = readme
 		info.HasDocs = true
 	}
 
 	// Check for CLAUDE.md
 	claudeMd := filepath.Join(repo.Path, "CLAUDE.md")
-	if _, err := os.Stat(claudeMd); err == nil {
+	if io.Local.IsFile(claudeMd) {
 		info.ClaudeMd = claudeMd
 		info.HasDocs = true
 	}
 
 	// Check for CHANGELOG.md
 	changelog := filepath.Join(repo.Path, "CHANGELOG.md")
-	if _, err := os.Stat(changelog); err == nil {
+	if io.Local.IsFile(changelog) {
 		info.Changelog = changelog
 		info.HasDocs = true
 	}
 
 	// Recursively scan docs/ directory for .md files
 	docsDir := filepath.Join(repo.Path, "docs")
-	if _, err := os.Stat(docsDir); err == nil {
+	// Check if directory exists by listing it
+	if _, err := io.Local.List(docsDir); err == nil {
 		filepath.WalkDir(docsDir, func(path string, d fs.DirEntry, err error) error {
 			if err != nil {
 				return nil
@@ -137,11 +139,3 @@ func scanRepoDocs(repo *repos.Repo) RepoDocInfo {
 
 	return info
 }
-
-func copyFile(src, dst string) error {
-	data, err := os.ReadFile(src)
-	if err != nil {
-		return err
-	}
-	return os.WriteFile(dst, data, 0644)
-}

internal/cmd/docs/cmd_sync.go

@@ -1,12 +1,12 @@
 package docs
 
 import (
-	"os"
 	"path/filepath"
 	"strings"
 
 	"github.com/host-uk/core/pkg/cli"
 	"github.com/host-uk/core/pkg/i18n"
+	"github.com/host-uk/core/pkg/io"
 )
 
 // Flag variables for sync command
@@ -127,9 +127,9 @@ func runDocsSync(registryPath string, outputDir string, dryRun bool) error {
 		repoOutDir := filepath.Join(outputDir, outName)
 
 		// Clear existing directory
-		os.RemoveAll(repoOutDir)
+		io.Local.Delete(repoOutDir) // Recursive delete
 
-		if err := os.MkdirAll(repoOutDir, 0755); err != nil {
+		if err := io.Local.EnsureDir(repoOutDir); err != nil {
 			cli.Print("  %s %s: %s\n", errorStyle.Render("✗"), info.Name, err)
 			continue
 		}
@@ -139,8 +139,10 @@ func runDocsSync(registryPath string, outputDir string, dryRun bool) error {
 		for _, f := range info.DocsFiles {
 			src := filepath.Join(docsDir, f)
 			dst := filepath.Join(repoOutDir, f)
-			os.MkdirAll(filepath.Dir(dst), 0755)
-			if err := copyFile(src, dst); err != nil {
+			// Ensure parent dir
+			io.Local.EnsureDir(filepath.Dir(dst))
+
+			if err := io.Copy(io.Local, src, io.Local, dst); err != nil {
 				cli.Print("  %s %s: %s\n", errorStyle.Render("✗"), f, err)
 			}
 		}

pkg/io/io.go

@@ -2,6 +2,7 @@ package io
 
 import (
 	"os"
+	"strings"
 
 	coreerr "github.com/host-uk/core/pkg/framework/core"
 	"github.com/host-uk/core/pkg/io/local"
@@ -146,10 +147,24 @@ func (m *MockMedium) FileSet(path, content string) error {
 	return m.Write(path, content)
 }
 
-// Delete removes a file or empty directory from the mock filesystem.
+// Delete removes a file or directory recursively from the mock filesystem.
 func (m *MockMedium) Delete(path string) error {
+	// Delete exact match
 	delete(m.Files, path)
 	delete(m.Dirs, path)
+
+	// Delete all children (naive string prefix check)
+	prefix := path + "/"
+	for k := range m.Files {
+		if strings.HasPrefix(k, prefix) {
+			delete(m.Files, k)
+		}
+	}
+	for k := range m.Dirs {
+		if strings.HasPrefix(k, prefix) {
+			delete(m.Dirs, k)
+		}
+	}
 	return nil
 }
 

pkg/io/local/client.go

@@ -168,13 +168,13 @@ func (m *Medium) FileSet(relativePath, content string) error {
 	return m.Write(relativePath, content)
 }
 
-// Delete removes a file or empty directory.
+// Delete removes a file or directory recursively.
 func (m *Medium) Delete(relativePath string) error {
 	fullPath, err := m.path(relativePath)
 	if err != nil {
 		return err
 	}
-	return os.Remove(fullPath)
+	return os.RemoveAll(fullPath)
 }
 
 // Rename moves or renames a file.