feat: improve flashcard storage and audio regenerationv0.6.0

- Change default card storage from ~/Downloads to ~/.local/state/totalrecall/cards/
- Keep .apkg exports in ~/Downloads for user convenience
- Fix audio regeneration to use random voice and speed (0.9-1.0)
- Fix GNOME dock icon by updating StartupWMClass to "Totalrecall"
- Fix navigation to properly find cards in new XDG state directory
- Ensure config defaults are properly filled when using GUI mode
- Bump version to 0.6.0

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

1 files changed, 23 insertions, 22 deletions

diff --git a/internal/audio/provider.go b/internal/audio/provider.go
index 53b08c1..0142fb3 100644
--- a/internal/audio/provider.go
+++ b/internal/audio/provider.go
@@ -9,10 +9,10 @@ import (
 type Provider interface {
 	// GenerateAudio generates audio from text and saves it to the specified file
 	GenerateAudio(ctx context.Context, text string, outputFile string) error
-	
+
 	// Name returns the provider name
 	Name() string
-	
+
 	// IsAvailable checks if the provider is properly configured and available
 	IsAvailable() error
 }
@@ -22,14 +22,14 @@ type Config struct {
 	Provider     string // Provider name: "openai"
 	OutputDir    string // Directory for output files
 	OutputFormat string // Output format: "mp3" or "wav"
-	
+
 	// OpenAI-specific settings
 	OpenAIKey         string
 	OpenAIModel       string  // "tts-1", "tts-1-hd", or "gpt-4o-mini-tts"
 	OpenAIVoice       string  // "alloy", "ash", "ballad", "coral", "echo", "fable", "onyx", "nova", "sage", "shimmer", "verse"
 	OpenAISpeed       float64 // 0.25 to 4.0
 	OpenAIInstruction string  // Voice instructions for gpt-4o-mini-tts model
-	
+
 	// Caching settings
 	EnableCache bool
 	CacheDir    string
@@ -38,15 +38,16 @@ type Config struct {
 // DefaultConfig returns default configuration
 func DefaultProviderConfig() *Config {
 	return &Config{
-		Provider:        "openai",
-		OutputDir:       "./",
-		OutputFormat:    "mp3",
-		OpenAIModel:       "gpt-4o-mini-tts", // New model with voice instructions support
-		OpenAIVoice:       "alloy",
-		OpenAISpeed:       0.98, // Default speed for clarity
+		Provider:     "openai",
+		OutputDir:    "./",
+		OutputFormat: "mp3",
+		OpenAIModel:  "gpt-4o-mini-tts", // New model with voice instructions support
+		OpenAIVoice:  "alloy",
+		OpenAISpeed:  1.0,
+		// OpenAISpeed:       0.98, // Default speed for clarity
 		OpenAIInstruction: "You are speaking Bulgarian language (български език). Pronounce the Bulgarian text with authentic Bulgarian phonetics, not Russian. Speak slowly and clearly for language learners.",
-		EnableCache:     true,
-		CacheDir:        "./.audio_cache",
+		EnableCache:       true,
+		CacheDir:          "./.audio_cache",
 	}
 }
 
@@ -55,14 +56,14 @@ func NewProvider(config *Config) (Provider, error) {
 	if config == nil {
 		config = DefaultProviderConfig()
 	}
-	
+
 	switch config.Provider {
 	case "openai":
 		if config.OpenAIKey == "" {
 			return nil, fmt.Errorf("OpenAI API key is required")
 		}
 		return NewOpenAIProvider(config)
-		
+
 	default:
 		return nil, fmt.Errorf("unknown audio provider: %s", config.Provider)
 	}
@@ -70,8 +71,8 @@ func NewProvider(config *Config) (Provider, error) {
 
 // ProviderWithFallback wraps a primary provider with a fallback option
 type ProviderWithFallback struct {
-	primary   Provider
-	fallback  Provider
+	primary  Provider
+	fallback Provider
 }
 
 // NewProviderWithFallback creates a provider that falls back to secondary if primary fails
@@ -87,9 +88,9 @@ func (p *ProviderWithFallback) GenerateAudio(ctx context.Context, text string, o
 	err := p.primary.GenerateAudio(ctx, text, outputFile)
 	if err != nil {
 		// Log the primary error
-		fmt.Printf("Primary provider (%s) failed: %v. Falling back to %s\n", 
+		fmt.Printf("Primary provider (%s) failed: %v. Falling back to %s\n",
 			p.primary.Name(), err, p.fallback.Name())
-		
+
 		// Try fallback
 		return p.fallback.GenerateAudio(ctx, text, outputFile)
 	}
@@ -107,12 +108,12 @@ func (p *ProviderWithFallback) IsAvailable() error {
 	if primaryErr == nil {
 		return nil
 	}
-	
+
 	fallbackErr := p.fallback.IsAvailable()
 	if fallbackErr == nil {
 		return nil
 	}
-	
-	return fmt.Errorf("both providers unavailable: primary=%v, fallback=%v", 
+
+	return fmt.Errorf("both providers unavailable: primary=%v, fallback=%v",
 		primaryErr, fallbackErr)
-}
\ No newline at end of file
+}