feat: models test and fixes

internal/provider/whisper_cpp.go

@@ -17,16 +17,20 @@ func (p *WhisperCppProvider) ValidateAPIKey(key string) bool {
 	return true // no API key needed
 }
 
+func (p *WhisperCppProvider) APIKeyURL() string {
+	return ""
+}
+
 func (p *WhisperCppProvider) IsLocal() bool {
 	return true
 }
 
 func (p *WhisperCppProvider) Models() []Model {
-	// https://github.com/openai/whisper#available-models-and-languages
+	// https://github.com/ggml-org/whisper.cpp#models
 	allLangs := whisperTranscriptionLanguages
-	// https://github.com/openai/whisper#available-models-and-languages
+	// https://github.com/ggml-org/whisper.cpp#models
 	englishOnly := whisperEnglishOnlyLanguages
-	docsURL := "https://github.com/openai/whisper#available-models-and-languages"
+	docsURL := "https://github.com/ggml-org/whisper.cpp#models"
 
 	whisperModels := whisper.ListModels()
 	result := make([]Model, 0, len(whisperModels))
@@ -63,10 +67,36 @@ func (p *WhisperCppProvider) Models() []Model {
 }
 
 func modelDescription(m whisper.ModelInfo) string {
-	if m.Multilingual {
-		return "Multilingual local transcription"
+	switch m.ID {
+	case "tiny.en":
+		return "Free/offline; fastest but low accuracy, good for weak hardware"
+	case "base.en":
+		return "Free/offline; balanced speed and accuracy, recommended start"
+	case "small.en":
+		return "Free/offline; better accuracy, needs decent CPU"
+	case "medium.en":
+		return "Free/offline; best .en accuracy, needs good CPU/RAM"
+	case "tiny":
+		return "Free/offline multilingual; fastest but low accuracy"
+	case "base":
+		return "Free/offline multilingual; balanced, recommended start"
+	case "small":
+		return "Free/offline multilingual; better accuracy, needs decent CPU"
+	case "medium":
+		return "Free/offline multilingual; great accuracy, needs good CPU/RAM"
+	case "large-v1":
+		return "Free/offline; high accuracy, needs strong CPU/GPU"
+	case "large-v2":
+		return "Free/offline; high accuracy, needs strong CPU/GPU"
+	case "large-v3":
+		return "Free/offline; best accuracy available, needs strong hardware"
+	case "large-v3-turbo":
+		return "Free/offline; near-best accuracy with better speed"
 	}
-	return "English-only local transcription (faster)"
+	if m.Multilingual {
+		return "Free/offline multilingual model"
+	}
+	return "Free/offline English model"
 }
 
 func (p *WhisperCppProvider) DefaultModel(t ModelType) string {