Initial commit of Descrybe v2 without local scratch artifacts.

Drop one-shot tmp/axe scripts and agent i18n scratch so the Gitea tree is deployable.

apps/api/internal/aiprompts/errors.go

@@ -0,0 +1,27 @@
+package aiprompts
+
+import "errors"
+
+var (
+	ErrInvalidKey   = errors.New("invalid prompt key")
+	ErrInvalidInput = errors.New("invalid prompt input")
+)
+
+// ClientError maps known client errors to safe API messages.
+func ClientError(err error) (msg string, ok bool) {
+	switch {
+	case errors.Is(err, ErrInvalidKey):
+		return "invalid prompt key", true
+	case errors.Is(err, ErrInvalidInput):
+		return "invalid prompt templates", true
+	default:
+		// Wrapped ErrInvalidKey / ErrInvalidInput from fmt.Errorf("%w: …")
+		if errors.Is(err, ErrInvalidKey) {
+			return err.Error(), true
+		}
+		if errors.Is(err, ErrInvalidInput) {
+			return err.Error(), true
+		}
+		return "", false
+	}
+}