feat: profile rename subcommand + expand all model display names

internal/cli/profile.go

@@ -34,8 +34,8 @@ func NewProfile(reg *adapter.Registry) *cobra.Command {
 			}
 			names := make([]string, 0, len(entries))
 			for _, e := range entries {
-				if strings.HasSuffix(e.Name(), ".yaml") {
-					names = append(names, strings.TrimSuffix(e.Name(), ".yaml"))
+				if n, ok := strings.CutSuffix(e.Name(), ".yaml"); ok {
+					names = append(names, n)
 				}
 			}
 			sort.Strings(names)
@@ -84,8 +84,54 @@ func NewProfile(reg *adapter.Registry) *cobra.Command {
 	rootFlag(use)
 	use.Flags().BoolVar(&applyAfter, "apply", false, "run apply automatically after switching profile")
 
+	rename := &cobra.Command{
+		Use:   "rename <old> <new>",
+		Short: "Rename a profile (file + name field + active_profile if needed)",
+		Args:  cobra.ExactArgs(2),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			r, err := resolveRoot(root)
+			if err != nil {
+				return err
+			}
+			oldName, newName := args[0], args[1]
+			oldPath := filepath.Join(r, "profiles", oldName+".yaml")
+			newPath := filepath.Join(r, "profiles", newName+".yaml")
+
+			if _, statErr := os.Stat(oldPath); statErr != nil {
+				return fmt.Errorf("profile %q not found", oldName)
+			}
+			if _, statErr := os.Stat(newPath); statErr == nil {
+				return fmt.Errorf("profile %q already exists", newName)
+			}
+
+			body, err := os.ReadFile(oldPath)
+			if err != nil {
+				return err
+			}
+			if err := os.WriteFile(newPath, []byte(setProfileName(string(body), newName)), 0o600); err != nil {
+				return err
+			}
+			if err := os.Remove(oldPath); err != nil {
+				_ = os.Remove(newPath)
+				return err
+			}
+
+			// Update active_profile in config.yaml if it points at the old name.
+			configPath := filepath.Join(r, "config.yaml")
+			if existing, readErr := os.ReadFile(configPath); readErr == nil {
+				if isActiveProfile(string(existing), oldName) {
+					_ = os.WriteFile(configPath, []byte(setActiveProfile(string(existing), newName)), 0o600)
+				}
+			}
+
+			_, _ = fmt.Fprintf(cmd.OutOrStdout(), "Renamed profile %q → %q.\n", oldName, newName)
+			return nil
+		},
+	}
+	rootFlag(rename)
+
 	cmd := &cobra.Command{Use: "profile", Short: "Manage profiles"}
-	cmd.AddCommand(list, use)
+	cmd.AddCommand(list, use, rename)
 	return cmd
 }
 
@@ -99,3 +145,23 @@ func setActiveProfile(existing, name string) string {
 	}
 	return strings.TrimRight(existing, "\n") + "\nactive_profile: " + name + "\n"
 }
+
+func isActiveProfile(configYAML, name string) bool {
+	for l := range strings.SplitSeq(configYAML, "\n") {
+		if rest, ok := strings.CutPrefix(l, "active_profile:"); ok {
+			return strings.TrimSpace(rest) == name
+		}
+	}
+	return false
+}
+
+func setProfileName(body, name string) string {
+	lines := strings.Split(body, "\n")
+	for i, l := range lines {
+		if strings.HasPrefix(l, "name:") {
+			lines[i] = "name: " + name
+			return strings.Join(lines, "\n")
+		}
+	}
+	return "name: " + name + "\n" + strings.TrimLeft(body, "\n")
+}

internal/cli/profile_test.go

@@ -62,6 +62,69 @@ func TestProfileUseHintMessage(t *testing.T) {
 	assert.Contains(t, buf.String(), "harness-sync apply")
 }
 
+func TestProfileRename(t *testing.T) {
+	root := t.TempDir()
+	require.NoError(t, os.MkdirAll(filepath.Join(root, "profiles"), 0o750))
+	require.NoError(t, os.WriteFile(filepath.Join(root, "profiles", "old.yaml"), []byte("name: old\ngateway:\n  url: https://gw\n"), 0o600))
+	require.NoError(t, os.WriteFile(filepath.Join(root, "config.yaml"), []byte("active_profile: other\n"), 0o600))
+
+	var buf bytes.Buffer
+	cmd := NewProfile(nil)
+	cmd.SetOut(&buf)
+	cmd.SetArgs([]string{"rename", "old", "new", "--root", root})
+	require.NoError(t, cmd.Execute())
+
+	// old file gone, new file present with updated name field.
+	_, err := os.Stat(filepath.Join(root, "profiles", "old.yaml"))
+	assert.True(t, os.IsNotExist(err), "old.yaml should be removed")
+	body, err := os.ReadFile(filepath.Join(root, "profiles", "new.yaml"))
+	require.NoError(t, err)
+	assert.Contains(t, string(body), "name: new")
+	assert.NotContains(t, string(body), "name: old")
+
+	// config.yaml not modified — old was not active.
+	cfg, err := os.ReadFile(filepath.Join(root, "config.yaml"))
+	require.NoError(t, err)
+	assert.Contains(t, string(cfg), "active_profile: other")
+
+	assert.Contains(t, buf.String(), `"old" → "new"`)
+}
+
+func TestProfileRenameUpdatesActiveProfile(t *testing.T) {
+	root := t.TempDir()
+	require.NoError(t, os.MkdirAll(filepath.Join(root, "profiles"), 0o750))
+	require.NoError(t, os.WriteFile(filepath.Join(root, "profiles", "old.yaml"), []byte("name: old\n"), 0o600))
+	require.NoError(t, os.WriteFile(filepath.Join(root, "config.yaml"), []byte("active_profile: old\n"), 0o600))
+
+	cmd := NewProfile(nil)
+	cmd.SetArgs([]string{"rename", "old", "new", "--root", root})
+	require.NoError(t, cmd.Execute())
+
+	cfg, err := os.ReadFile(filepath.Join(root, "config.yaml"))
+	require.NoError(t, err)
+	assert.Contains(t, string(cfg), "active_profile: new")
+}
+
+func TestProfileRenameErrorNotFound(t *testing.T) {
+	root := t.TempDir()
+	require.NoError(t, os.MkdirAll(filepath.Join(root, "profiles"), 0o750))
+
+	cmd := NewProfile(nil)
+	cmd.SetArgs([]string{"rename", "missing", "new", "--root", root})
+	assert.Error(t, cmd.Execute())
+}
+
+func TestProfileRenameErrorAlreadyExists(t *testing.T) {
+	root := t.TempDir()
+	require.NoError(t, os.MkdirAll(filepath.Join(root, "profiles"), 0o750))
+	require.NoError(t, os.WriteFile(filepath.Join(root, "profiles", "old.yaml"), []byte("name: old\n"), 0o600))
+	require.NoError(t, os.WriteFile(filepath.Join(root, "profiles", "new.yaml"), []byte("name: new\n"), 0o600))
+
+	cmd := NewProfile(nil)
+	cmd.SetArgs([]string{"rename", "old", "new", "--root", root})
+	assert.Error(t, cmd.Execute())
+}
+
 // TestProfileUseWithApply verifies --apply triggers apply after switching.
 func TestProfileUseWithApply(t *testing.T) {
 	root := t.TempDir()