Release 0.28.2v0.28.2

12 files changed, 532 insertions, 9 deletions

diff --git a/.grok/settings.json b/.grok/settings.json
new file mode 100644
index 0000000..a2d9deb
--- /dev/null
+++ b/.grok/settings.json
@@ -0,0 +1,3 @@
+{
+  "model": "grok-code-fast-1"
+}
\ No newline at end of file
diff --git a/cmd/totalrecall/main.go b/cmd/totalrecall/main.go
index 94a0508..30b8dc3 100644
--- a/cmd/totalrecall/main.go
+++ b/cmd/totalrecall/main.go
@@ -100,8 +100,12 @@ func runCommand(cmd *cobra.Command, args []string, flags *cli.Flags, deps runDep
 	// the global Viper singleton directly (Dependency Inversion Principle).
 	proc := newProcessor(flags)
 
-	// Handle batch processing
-	if flags.BatchFile != "" {
+	// Handle failed-asset retry mode before normal input processing.
+	if flags.RetryFailedAssets {
+		if err := proc.RetryFailedAssets(); err != nil {
+			return err
+		}
+	} else if flags.BatchFile != "" {
 		// Process batch file
 		if err := proc.ProcessBatch(); err != nil {
 			return err
diff --git a/internal/cli/command.go b/internal/cli/command.go
index 43a03bc..526dffe 100644
--- a/internal/cli/command.go
+++ b/internal/cli/command.go
@@ -22,6 +22,7 @@ Examples:
   totalrecall                     # Launch interactive GUI (default)
   totalrecall ябълка              # Generate materials for "apple" via CLI
   totalrecall --batch words.txt   # Process multiple words from file
+  totalrecall --retry-failed-assets # Resume incomplete cards in the output directory
   totalrecall --archive           # Archive existing cards directory
 
 Batch file formats:
diff --git a/internal/cli/command_test.go b/internal/cli/command_test.go
index 80626eb..4c95c3b 100644
--- a/internal/cli/command_test.go
+++ b/internal/cli/command_test.go
@@ -32,6 +32,9 @@ func TestCreateRootCommand(t *testing.T) {
 	if !strings.Contains(cmd.Long, "Explicit CLI and batch runs also use Nano Banana by default") {
 		t.Errorf("Expected Long description to describe the CLI and batch Nano Banana default")
 	}
+	if !strings.Contains(cmd.Long, "--retry-failed-assets") {
+		t.Errorf("Expected Long description to mention retry-failed-assets mode")
+	}
 
 	// Test that flags are set up
 	flagTests := []struct {
@@ -45,6 +48,7 @@ func TestCreateRootCommand(t *testing.T) {
 		{"batch", true},
 		{"skip-audio", true},
 		{"skip-images", true},
+		{"retry-failed-assets", true},
 		{"anki", true},
 		{"anki-csv", true},
 		{"deck-name", true},
@@ -119,6 +123,14 @@ func TestSetupFlags(t *testing.T) {
 		t.Errorf("Expected image-api help to describe the CLI Nano Banana default and config fallback, got %q", imageAPIFlag.Usage)
 	}
 
+	retryFailedAssetsFlag := cmd.Flags().Lookup("retry-failed-assets")
+	if retryFailedAssetsFlag == nil {
+		t.Fatal("retry-failed-assets flag not found")
+	}
+	if !strings.Contains(retryFailedAssetsFlag.Usage, "stopping on the first error") {
+		t.Errorf("Expected retry-failed-assets help to describe stop-on-first-error behavior, got %q", retryFailedAssetsFlag.Usage)
+	}
+
 	openAIVoiceFlag := cmd.Flags().Lookup("openai-voice")
 	if openAIVoiceFlag == nil {
 		t.Fatal("openai-voice flag not found")
diff --git a/internal/cli/flags.go b/internal/cli/flags.go
index 43e3b23..bdcc88b 100644
--- a/internal/cli/flags.go
+++ b/internal/cli/flags.go
@@ -38,6 +38,7 @@ type Flags struct {
 	VideoEnabled          bool   // --video: whether to prompt for Veo video generation after --story completes
 	SkipAudio             bool
 	SkipImages            bool
+	RetryFailedAssets     bool
 	GenerateAnki          bool
 	AnkiCSV               bool
 	DeckName              string
@@ -131,6 +132,7 @@ func setupFlags(cmd *cobra.Command, flags *Flags) {
 		"Prompt to generate Veo videos after comic generation (default true; use --video=false to skip)")
 	cmd.Flags().BoolVar(&flags.SkipAudio, "skip-audio", false, "Skip audio generation")
 	cmd.Flags().BoolVar(&flags.SkipImages, "skip-images", false, "Skip image download")
+	cmd.Flags().BoolVar(&flags.RetryFailedAssets, "retry-failed-assets", false, "Scan existing cards and regenerate missing or failed audio/image assets, stopping on the first error")
 	cmd.Flags().BoolVar(&flags.GenerateAnki, "anki", false, "Generate Anki import file (APKG format by default, use --anki-csv for legacy CSV)")
 	cmd.Flags().BoolVar(&flags.AnkiCSV, "anki-csv", false, "Generate legacy CSV format instead of APKG when using --anki")
 	cmd.Flags().StringVar(&flags.DeckName, "deck-name", flags.DeckName, "Deck name for APKG export")
diff --git a/internal/cli/flags_test.go b/internal/cli/flags_test.go
index 4b59bee..5c56770 100644
--- a/internal/cli/flags_test.go
+++ b/internal/cli/flags_test.go
@@ -51,6 +51,7 @@ func TestNewFlags(t *testing.T) {
 	}{
 		{"SkipAudio", flags.SkipAudio},
 		{"SkipImages", flags.SkipImages},
+		{"RetryFailedAssets", flags.RetryFailedAssets},
 		{"GenerateAnki", flags.GenerateAnki},
 		{"AnkiCSV", flags.AnkiCSV},
 		{"ListModels", flags.ListModels},
@@ -94,7 +95,7 @@ func TestFlagsStructure(t *testing.T) {
 
 	expectedFields := []string{
 		"CfgFile", "OutputDir", "AudioFormat", "AudioFormatSpecified", "AudioProvider", "ImageAPI", "ImageAPISpecified", "BatchFile",
-		"SkipAudio", "SkipImages", "GenerateAnki", "AnkiCSV", "DeckName",
+		"SkipAudio", "SkipImages", "RetryFailedAssets", "GenerateAnki", "AnkiCSV", "DeckName",
 		"ListModels", "AllVoices", "NoAutoPlay",
 		"OpenAIModel", "OpenAIVoice", "OpenAISpeed", "OpenAIInstruction",
 		"OpenAIImageModel", "OpenAIImageSize", "OpenAIImageQuality", "OpenAIImageStyle",
diff --git a/internal/processor/failed_asset_retry.go b/internal/processor/failed_asset_retry.go
new file mode 100644
index 0000000..88d1abe
--- /dev/null
+++ b/internal/processor/failed_asset_retry.go
@@ -0,0 +1,290 @@
+package processor
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"codeberg.org/snonux/totalrecall/internal"
+	"codeberg.org/snonux/totalrecall/internal/anki"
+	"codeberg.org/snonux/totalrecall/internal/audio"
+	"codeberg.org/snonux/totalrecall/internal/store"
+)
+
+type failedAssetKind string
+
+const (
+	failedAssetAudio          failedAssetKind = "audio"
+	failedAssetImage          failedAssetKind = "image"
+	failedAssetBgBgAudioPair  failedAssetKind = "front and back audio"
+	failedAssetBgBgFrontAudio failedAssetKind = "front audio"
+	failedAssetBgBgBackAudio  failedAssetKind = "back audio"
+)
+
+type failedAssetPlan struct {
+	Card        store.CardDirectory
+	CardType    internal.CardType
+	Translation string
+	ImagePrompt string
+	Assets      []failedAssetKind
+}
+
+// RetryFailedAssets scans the existing card output directory for incomplete or
+// failed asset generations and retries them in deterministic order. The retry
+// loop stops immediately on the first fresh error so users can rerun the same
+// command after an upstream rate limit clears.
+func (p *Processor) RetryFailedAssets() error {
+	if err := os.MkdirAll(p.Flags.OutputDir, 0755); err != nil {
+		return fmt.Errorf("failed to create output directory: %w", err)
+	}
+
+	plans, err := p.scanFailedAssetPlans()
+	if err != nil {
+		return err
+	}
+	if len(plans) == 0 {
+		fmt.Printf("No failed assets found in: %s\n", p.Flags.OutputDir)
+		return nil
+	}
+
+	totalAssets := 0
+	for _, plan := range plans {
+		totalAssets += len(plan.Assets)
+	}
+
+	fmt.Printf("Found %d failed asset(s) across %d card(s) in %s\n", totalAssets, len(plans), p.Flags.OutputDir)
+
+	regenerated := 0
+	for _, plan := range plans {
+		fmt.Printf("\nRetrying card: %s\n", plan.Card.Word)
+		for _, asset := range plan.Assets {
+			fmt.Printf("  Regenerating %s...\n", asset)
+
+			assetCtx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
+			err := p.regenerateFailedAsset(assetCtx, plan, asset)
+			cancel()
+			if err != nil {
+				return fmt.Errorf("stopped after %d successful regeneration(s); %s for %q failed: %w", regenerated, asset, plan.Card.Word, err)
+			}
+
+			regenerated++
+		}
+	}
+
+	fmt.Printf("\nRegenerated %d failed asset(s).\n", regenerated)
+	return nil
+}
+
+func (p *Processor) scanFailedAssetPlans() ([]failedAssetPlan, error) {
+	cards := p.cardStore.ListCardDirectories(nil)
+	plans := make([]failedAssetPlan, 0, len(cards))
+
+	for _, card := range cards {
+		plan := p.buildFailedAssetPlan(card)
+		if len(plan.Assets) == 0 {
+			continue
+		}
+		plans = append(plans, plan)
+	}
+
+	return plans, nil
+}
+
+func (p *Processor) buildFailedAssetPlan(card store.CardDirectory) failedAssetPlan {
+	plan := failedAssetPlan{
+		Card:        card,
+		CardType:    internal.LoadCardType(card.Path),
+		Translation: readStoredTranslation(card.Path),
+		ImagePrompt: readStoredImagePrompt(card.Path),
+	}
+
+	if !p.Flags.SkipAudio {
+		if plan.CardType.IsBgBg() {
+			frontReady := audioAssetReady(card.Path, "audio_front", p.EffectiveAudioFormat())
+			backReady := audioAssetReady(card.Path, "audio_back", p.EffectiveAudioFormat())
+
+			switch {
+			case !frontReady && !backReady:
+				plan.Assets = append(plan.Assets, failedAssetBgBgAudioPair)
+			case !frontReady:
+				plan.Assets = append(plan.Assets, failedAssetBgBgFrontAudio)
+			case !backReady:
+				plan.Assets = append(plan.Assets, failedAssetBgBgBackAudio)
+			}
+		} else if !audioAssetReady(card.Path, "audio", p.EffectiveAudioFormat()) {
+			plan.Assets = append(plan.Assets, failedAssetAudio)
+		}
+	}
+
+	if !p.Flags.SkipImages && !imageAssetReady(card.Path) {
+		plan.Assets = append(plan.Assets, failedAssetImage)
+	}
+
+	return plan
+}
+
+func (p *Processor) regenerateFailedAsset(ctx context.Context, plan failedAssetPlan, asset failedAssetKind) error {
+	switch asset {
+	case failedAssetAudio:
+		return p.generateAudio(ctx, plan.Card.Word)
+	case failedAssetImage:
+		return p.downloadImagesWithPrompt(ctx, plan.Card.Word, plan.Translation, plan.ImagePrompt)
+	case failedAssetBgBgAudioPair:
+		if strings.TrimSpace(plan.Translation) == "" {
+			return fmt.Errorf("missing back-side text in translation.txt")
+		}
+		return p.generateAudioBgBg(ctx, plan.Card.Word, plan.Translation)
+	case failedAssetBgBgFrontAudio:
+		return p.generateCardAudioSideInDir(ctx, plan.Card.Word, plan.Card.Path, "audio_front", "front audio")
+	case failedAssetBgBgBackAudio:
+		if strings.TrimSpace(plan.Translation) == "" {
+			return fmt.Errorf("missing back-side text in translation.txt")
+		}
+		return p.generateCardAudioSideInDir(ctx, plan.Translation, plan.Card.Path, "audio_back", "back audio")
+	default:
+		return fmt.Errorf("unknown failed asset kind %q", asset)
+	}
+}
+
+func (p *Processor) generateCardAudioSideInDir(ctx context.Context, text, wordDir, filenameBase, label string) error {
+	provider := p.AudioProviderName()
+	voice := p.audioVoiceForProvider()
+	p.logSelectedAudioVoice(provider, voice)
+
+	run := func(candidate string) error {
+		if candidate != voice {
+			fmt.Printf("  Retrying Gemini audio with voice: %s\n", candidate)
+		}
+		fmt.Printf("  Generating %s for '%s'...\n", label, text)
+		return p.generateAudioWithVoiceAndFilenameInDir(ctx, text, candidate, filenameBase, wordDir)
+	}
+
+	if provider == "gemini" && p.GeminiVoice() == "" {
+		_, err := audio.RunWithVoiceFallbacks(voice, run, func(candidate string) {
+			fmt.Printf("  Warning: Gemini returned no audio for voice %s\n", candidate)
+		})
+		return err
+	}
+
+	return run(voice)
+}
+
+func audioAssetReady(wordDir, baseName, preferredFormat string) bool {
+	paths := anki.ResolveAudioPaths(wordDir, baseName, preferredFormat)
+	if len(paths) == 0 {
+		return false
+	}
+
+	for _, path := range paths {
+		if !fileExistsAndNonEmpty(path) || !fileExistsAndNonEmpty(audio.AttributionPath(path)) {
+			return false
+		}
+	}
+
+	return fileExistsAndNonEmpty(filepath.Join(wordDir, "audio_metadata.txt"))
+}
+
+func imageAssetReady(wordDir string) bool {
+	if firstUsableImagePath(wordDir) == "" {
+		return false
+	}
+	if !fileExistsAndNonEmpty(filepath.Join(wordDir, "image_attribution.txt")) {
+		return false
+	}
+	return readStoredImagePrompt(wordDir) != ""
+}
+
+func firstUsableImagePath(wordDir string) string {
+	imagePatterns := []string{
+		"image_*.jpg",
+		"image_*.png",
+		"image_*.webp",
+		"image.jpg",
+		"image.png",
+		"image.webp",
+	}
+
+	for _, pattern := range imagePatterns {
+		if strings.Contains(pattern, "*") {
+			matches, _ := filepath.Glob(filepath.Join(wordDir, pattern))
+			for _, match := range matches {
+				if fileExistsAndNonEmpty(match) {
+					return match
+				}
+			}
+			continue
+		}
+
+		path := filepath.Join(wordDir, pattern)
+		if fileExistsAndNonEmpty(path) {
+			return path
+		}
+	}
+
+	return ""
+}
+
+func readStoredTranslation(wordDir string) string {
+	data, err := os.ReadFile(filepath.Join(wordDir, "translation.txt"))
+	if err != nil {
+		return ""
+	}
+
+	parts := strings.SplitN(string(data), "=", 2)
+	if len(parts) != 2 {
+		return strings.TrimSpace(string(data))
+	}
+
+	return strings.TrimSpace(parts[1])
+}
+
+func readStoredImagePrompt(wordDir string) string {
+	data, err := os.ReadFile(filepath.Join(wordDir, "image_prompt.txt"))
+	if err != nil {
+		return ""
+	}
+
+	prompt := strings.TrimSpace(string(data))
+	if prompt == "" || looksLikeFailedPrompt(prompt) {
+		return ""
+	}
+
+	return prompt
+}
+
+func looksLikeFailedPrompt(prompt string) bool {
+	lower := strings.ToLower(strings.TrimSpace(prompt))
+	if lower == "" {
+		return true
+	}
+
+	markers := []string{
+		"rate limit",
+		"too many requests",
+		"quota exceeded",
+		"resource exhausted",
+		"failed to generate",
+		"generation failed",
+		"temporarily unavailable",
+		"http 429",
+	}
+
+	for _, marker := range markers {
+		if strings.Contains(lower, marker) {
+			return true
+		}
+	}
+
+	return false
+}
+
+func fileExistsAndNonEmpty(path string) bool {
+	info, err := os.Stat(path)
+	if err != nil || info.IsDir() {
+		return false
+	}
+	return info.Size() > 0
+}
diff --git a/internal/processor/image_downloader.go b/internal/processor/image_downloader.go
index 1d6c002..fa0f6cf 100644
--- a/internal/processor/image_downloader.go
+++ b/internal/processor/image_downloader.go
@@ -24,6 +24,13 @@ import (
 // AI image providers can generate more contextually accurate images.
 // ctx is passed to the image downloader so the caller's deadline applies.
 func (p *Processor) downloadImagesWithTranslation(ctx context.Context, word, translationText string) error {
+	return p.downloadImagesWithPrompt(ctx, word, translationText, "")
+}
+
+// downloadImagesWithPrompt downloads images for a word and optionally reuses a
+// previously-saved prompt. When customPrompt is empty the provider generates a
+// fresh prompt as usual.
+func (p *Processor) downloadImagesWithPrompt(ctx context.Context, word, translationText, customPrompt string) error {
 	searcher, err := p.newImageSearcher()
 	if err != nil {
 		return err
@@ -43,6 +50,9 @@ func (p *Processor) downloadImagesWithTranslation(ctx context.Context, word, tra
 	if translationText != "" {
 		searchOpts.Translation = translationText
 	}
+	if strings.TrimSpace(customPrompt) != "" {
+		searchOpts.CustomPrompt = strings.TrimSpace(customPrompt)
+	}
 
 	// Register a prompt callback so the AI-generated prompt is persisted
 	// to disk before the download completes (used by the GUI and for debugging).
diff --git a/internal/processor/processor_test.go b/internal/processor/processor_test.go
index 649c092..64d6938 100644
--- a/internal/processor/processor_test.go
+++ b/internal/processor/processor_test.go
@@ -11,6 +11,7 @@ import (
 	"strings"
 	"testing"
 
+	"codeberg.org/snonux/totalrecall/internal"
 	"codeberg.org/snonux/totalrecall/internal/audio"
 	"codeberg.org/snonux/totalrecall/internal/cli"
 	"codeberg.org/snonux/totalrecall/internal/gui"
@@ -1333,6 +1334,153 @@ func TestProcessBatch_ValidFile(t *testing.T) {
 	}
 }
 
+func TestRetryFailedAssets_RegeneratesMissingEnBgAssetsInOrder(t *testing.T) {
+	t.Setenv("GOOGLE_API_KEY", "test-google-key")
+
+	flags := cli.NewFlags()
+	flags.OutputDir = t.TempDir()
+	flags.ImageAPI = image.ImageProviderNanoBanana
+	flags.ImageAPISpecified = true
+	p := NewProcessor(flags, &Config{})
+
+	cardDir := p.findOrCreateWordDirectory("ябълка")
+	if err := os.WriteFile(filepath.Join(cardDir, "translation.txt"), []byte("ябълка = apple\n"), 0644); err != nil {
+		t.Fatalf("setup translation.txt: %v", err)
+	}
+
+	fakeProvider := &fakeAudioProvider{
+		generateFunc: func(_ string, outputFile string) error {
+			return os.WriteFile(outputFile, []byte("audio data"), 0644)
+		},
+	}
+	p.newAudioProvider = func(*audio.Config) (audio.Provider, error) {
+		return fakeProvider, nil
+	}
+	p.imageFactories.NewNanoBananaClient = func(*image.NanoBananaConfig) image.PromptAwareClient {
+		return &stubImageSearcher{}
+	}
+
+	output := captureStdout(t, func() {
+		if err := p.RetryFailedAssets(); err != nil {
+			t.Fatalf("RetryFailedAssets() unexpected error: %v", err)
+		}
+	})
+
+	if fakeProvider.generateCalls != 1 {
+		t.Fatalf("audio generate calls = %d, want 1", fakeProvider.generateCalls)
+	}
+	if !strings.Contains(output, "Regenerating audio") || !strings.Contains(output, "Regenerating image") {
+		t.Fatalf("stdout missing retry steps: %q", output)
+	}
+	if strings.Index(output, "Regenerating audio") > strings.Index(output, "Regenerating image") {
+		t.Fatalf("retry order is wrong, output = %q", output)
+	}
+	if _, err := os.Stat(filepath.Join(cardDir, "audio.mp3")); err != nil {
+		t.Fatalf("expected audio.mp3 to be created: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(cardDir, "image.png")); err != nil {
+		t.Fatalf("expected image.png to be created: %v", err)
+	}
+	promptData, err := os.ReadFile(filepath.Join(cardDir, "image_prompt.txt"))
+	if err != nil {
+		t.Fatalf("expected image_prompt.txt to be created: %v", err)
+	}
+	if strings.TrimSpace(string(promptData)) != "stub nanobanana prompt" {
+		t.Fatalf("image prompt = %q, want %q", strings.TrimSpace(string(promptData)), "stub nanobanana prompt")
+	}
+}
+
+func TestRetryFailedAssets_StopsOnFirstError(t *testing.T) {
+	flags := cli.NewFlags()
+	flags.OutputDir = t.TempDir()
+	flags.SkipImages = true
+	p := NewProcessor(flags, &Config{})
+
+	firstDir := p.findOrCreateWordDirectory("ябълка")
+	secondDir := p.findOrCreateWordDirectory("круша")
+	if err := os.WriteFile(filepath.Join(firstDir, "translation.txt"), []byte("ябълка = apple\n"), 0644); err != nil {
+		t.Fatalf("setup first translation.txt: %v", err)
+	}
+	if err := os.WriteFile(filepath.Join(secondDir, "translation.txt"), []byte("круша = pear\n"), 0644); err != nil {
+		t.Fatalf("setup second translation.txt: %v", err)
+	}
+
+	fakeProvider := &fakeAudioProvider{
+		generateFunc: func(_ string, _ string) error {
+			return errors.New("rate limit exceeded")
+		},
+	}
+	p.newAudioProvider = func(*audio.Config) (audio.Provider, error) {
+		return fakeProvider, nil
+	}
+
+	err := p.RetryFailedAssets()
+	if err == nil {
+		t.Fatal("expected RetryFailedAssets() to stop on first error")
+	}
+	if !strings.Contains(err.Error(), "rate limit exceeded") {
+		t.Fatalf("RetryFailedAssets() error = %v, want rate limit message", err)
+	}
+	if fakeProvider.generateCalls != 1 {
+		t.Fatalf("audio generate calls = %d, want 1", fakeProvider.generateCalls)
+	}
+	if _, statErr := os.Stat(filepath.Join(secondDir, "audio.mp3")); !os.IsNotExist(statErr) {
+		t.Fatalf("second card audio should not have been generated, stat err = %v", statErr)
+	}
+}
+
+func TestRetryFailedAssets_RegeneratesOnlyMissingBgBgBackAudio(t *testing.T) {
+	flags := cli.NewFlags()
+	flags.OutputDir = t.TempDir()
+	flags.SkipImages = true
+	p := NewProcessor(flags, &Config{})
+
+	cardDir := p.findOrCreateWordDirectory("ябълка")
+	if err := internal.SaveCardType(cardDir, internal.CardTypeBgBg); err != nil {
+		t.Fatalf("setup cardtype.txt: %v", err)
+	}
+	if err := os.WriteFile(filepath.Join(cardDir, "translation.txt"), []byte("ябълка = плод\n"), 0644); err != nil {
+		t.Fatalf("setup translation.txt: %v", err)
+	}
+
+	frontAudio := filepath.Join(cardDir, "audio_front.mp3")
+	if err := os.WriteFile(frontAudio, []byte("front audio"), 0644); err != nil {
+		t.Fatalf("setup audio_front.mp3: %v", err)
+	}
+	if err := os.WriteFile(audio.AttributionPath(frontAudio), []byte("front attribution"), 0644); err != nil {
+		t.Fatalf("setup front attribution: %v", err)
+	}
+	if err := os.WriteFile(filepath.Join(cardDir, "audio_metadata.txt"), []byte("format=mp3\naudio_file=audio_front.mp3\n"), 0644); err != nil {
+		t.Fatalf("setup audio_metadata.txt: %v", err)
+	}
+
+	fakeProvider := &fakeAudioProvider{
+		generateFunc: func(_ string, outputFile string) error {
+			return os.WriteFile(outputFile, []byte("back audio"), 0644)
+		},
+	}
+	p.newAudioProvider = func(*audio.Config) (audio.Provider, error) {
+		return fakeProvider, nil
+	}
+
+	if err := p.RetryFailedAssets(); err != nil {
+		t.Fatalf("RetryFailedAssets() unexpected error: %v", err)
+	}
+
+	if fakeProvider.generateCalls != 1 {
+		t.Fatalf("audio generate calls = %d, want 1", fakeProvider.generateCalls)
+	}
+	if !strings.HasSuffix(fakeProvider.lastOutputFile, "audio_back.mp3") {
+		t.Fatalf("last output file = %q, want audio_back.mp3", fakeProvider.lastOutputFile)
+	}
+	if _, err := os.Stat(filepath.Join(cardDir, "audio_back.mp3")); err != nil {
+		t.Fatalf("expected audio_back.mp3 to be created: %v", err)
+	}
+	if _, err := os.Stat(frontAudio); err != nil {
+		t.Fatalf("front audio should remain present: %v", err)
+	}
+}
+
 func TestProcessWordWithTranslation_ProvidedTranslation(t *testing.T) {
 	flags := cli.NewFlags()
 	flags.OutputDir = t.TempDir()
diff --git a/internal/store/store.go b/internal/store/store.go
index 16f50ba..daafb28 100644
--- a/internal/store/store.go
+++ b/internal/store/store.go
@@ -25,6 +25,13 @@ type CardStore struct {
 	outputDir string
 }
 
+// CardDirectory describes one discovered on-disk card directory and the word
+// stored inside it.
+type CardDirectory struct {
+	Path string
+	Word string
+}
+
 // New constructs a CardStore rooted at outputDir.
 func New(outputDir string) *CardStore {
 	return &CardStore{outputDir: outputDir}
@@ -56,13 +63,26 @@ func (cs *CardStore) FindOrCreateCardDirectory(word string) string {
 // candidate directory; pass nil to accept all directories that have a word
 // file.
 func (cs *CardStore) ScanWords(hasContent func(wordDir string) bool) []string {
+	cards := cs.ListCardDirectories(hasContent)
+	words := make([]string, 0, len(cards))
+	for _, card := range cards {
+		words = append(words, card.Word)
+	}
+	sort.Strings(words)
+	return words
+}
+
+// ListCardDirectories scans the output directory for non-hidden card
+// subdirectories that contain word metadata. The result is sorted by directory
+// path so callers can process cards in deterministic creation order.
+func (cs *CardStore) ListCardDirectories(hasContent func(wordDir string) bool) []CardDirectory {
 	entries, err := os.ReadDir(cs.outputDir)
 	if err != nil {
 		// Output directory does not exist yet; return empty list silently.
-		return []string{}
+		return []CardDirectory{}
 	}
 
-	words := make([]string, 0, len(entries))
+	cards := make([]CardDirectory, 0, len(entries))
 
 	for _, entry := range entries {
 		if !entry.IsDir() || strings.HasPrefix(entry.Name(), ".") {
@@ -77,12 +97,14 @@ func (cs *CardStore) ScanWords(hasContent func(wordDir string) bool) []string {
 		}
 
 		if hasContent == nil || hasContent(wordDir) {
-			words = append(words, word)
+			cards = append(cards, CardDirectory{Path: wordDir, Word: word})
 		}
 	}
 
-	sort.Strings(words)
-	return words
+	sort.Slice(cards, func(i, j int) bool {
+		return cards[i].Path < cards[j].Path
+	})
+	return cards
 }
 
 // GenerateCardID creates a unique ID for a card based on the current timestamp
diff --git a/internal/store/store_test.go b/internal/store/store_test.go
index 6d34d0c..02da883 100644
--- a/internal/store/store_test.go
+++ b/internal/store/store_test.go
@@ -138,3 +138,33 @@ func TestCardStoreScanWords(t *testing.T) {
 		t.Errorf("ScanWords(nil) = %v; want 2 words", allWords)
 	}
 }
+
+func TestCardStoreListCardDirectories(t *testing.T) {
+	tmpDir := t.TempDir()
+
+	makeCard := func(id, word string) string {
+		cardDir := filepath.Join(tmpDir, id)
+		_ = os.MkdirAll(cardDir, 0755)
+		_ = os.WriteFile(filepath.Join(cardDir, "word.txt"), []byte(word), 0644)
+		return cardDir
+	}
+
+	card2 := makeCard("card2", "куче")
+	makeCard("card1", "котка")
+	makeCard(".hidden", "hidden")
+
+	cs := store.New(tmpDir)
+	cards := cs.ListCardDirectories(func(wordDir string) bool {
+		return wordDir != card2
+	})
+
+	if len(cards) != 1 {
+		t.Fatalf("ListCardDirectories() returned %d cards, want 1", len(cards))
+	}
+	if cards[0].Word != "котка" {
+		t.Fatalf("ListCardDirectories()[0].Word = %q, want %q", cards[0].Word, "котка")
+	}
+	if filepath.Base(cards[0].Path) != "card1" {
+		t.Fatalf("ListCardDirectories()[0].Path = %q, want base %q", cards[0].Path, "card1")
+	}
+}
diff --git a/internal/version.go b/internal/version.go
index 7f9bfc6..d0c1d3a 100644
--- a/internal/version.go
+++ b/internal/version.go
@@ -1,3 +1,3 @@
 package internal
 
-const Version = "0.28.1"
+const Version = "0.28.2"