Initial commit: CarrotAssistant backend (Go + Gin + SQLite, OpenAI-compatible agent runtime)

internal/skill/fs.go

@@ -0,0 +1,30 @@
+package skill
+
+import (
+	"errors"
+	"io/fs"
+	"os"
+	"path/filepath"
+)
+
+// mkdirAll wraps os.MkdirAll so the manager can swap implementations or add
+// permission handling in one place.
+func mkdirAll(path string) error {
+	return os.MkdirAll(path, 0o755)
+}
+
+// removeIfExists deletes a path, treating "not found" as success. Any other
+// error is returned.
+func removeIfExists(path string) error {
+	err := os.Remove(path)
+	if err == nil || errors.Is(err, fs.ErrNotExist) {
+		return nil
+	}
+	return err
+}
+
+// appDir returns the absolute directory holding an app's skills. Not exported;
+// used internally when bulk-removing.
+func (m *Manager) appDir(appSlug string) string {
+	return filepath.Join(m.Root, appSlug)
+}