Change name and prepare for push

config.go

@@ -96,31 +96,46 @@ func defaultConfig() Config {
 }
 
 func configPath() (string, error) {
+	if path := os.Getenv("DIPLE_CONFIG"); path != "" {
+		return path, nil
+	}
+	// Preserve the old override during the rename so existing scripts do not
+	// silently start with a fresh configuration.
 	if path := os.Getenv("GH_THREADS_CONFIG"); path != "" {
 		return path, nil
 	}
 	if base := os.Getenv("XDG_CONFIG_HOME"); base != "" {
-		return filepath.Join(base, "gh-threads", "config.toml"), nil
+		return firstExistingOrDefault(
+			filepath.Join(base, "diple", "config.toml"),
+			filepath.Join(base, "gh-threads", "config.toml"),
+		), nil
 	}
 	base, err := os.UserConfigDir()
 	if err != nil {
 		return "", fmt.Errorf("find user config directory: %w", err)
 	}
-	preferred := filepath.Join(base, "gh-threads", "config.toml")
+	preferred := filepath.Join(base, "diple", "config.toml")
 	home, err := os.UserHomeDir()
 	if err != nil {
 		return "", fmt.Errorf("find home directory: %w", err)
 	}
-	fallback := filepath.Join(home, ".config", "gh-threads", "config.toml")
-	return existingConfigPath(preferred, fallback), nil
+	dotConfig := filepath.Join(home, ".config", "diple", "config.toml")
+	legacyPreferred := filepath.Join(base, "gh-threads", "config.toml")
+	legacyDotConfig := filepath.Join(home, ".config", "gh-threads", "config.toml")
+	return firstExistingOrDefault(
+		preferred, dotConfig, legacyPreferred, legacyDotConfig,
+	), nil
 }
 
 func existingConfigPath(preferred, fallback string) string {
-	if _, err := os.Stat(preferred); err == nil || !errors.Is(err, os.ErrNotExist) {
-		return preferred
-	}
-	if _, err := os.Stat(fallback); err == nil {
-		return fallback
+	return firstExistingOrDefault(preferred, fallback)
+}
+
+func firstExistingOrDefault(preferred string, alternatives ...string) string {
+	for _, candidate := range append([]string{preferred}, alternatives...) {
+		if _, err := os.Stat(candidate); err == nil || !errors.Is(err, os.ErrNotExist) {
+			return candidate
+		}
 	}
 	return preferred
 }
@@ -200,7 +215,10 @@ func defaultCacheDir() (string, error) {
 	if err != nil {
 		return "", fmt.Errorf("find user cache directory: %w", err)
 	}
-	return filepath.Join(base, "gh-threads"), nil
+	return firstExistingOrDefault(
+		filepath.Join(base, "diple"),
+		filepath.Join(base, "gh-threads"),
+	), nil
 }
 
 func validateThreadStatusOrder(order []string) error {