add Threads field to transcriber config for local providers

internal/config/convert.go

@@ -26,6 +26,7 @@ func (c *Config) ToTranscriberConfig() transcriber.Config {
 		Language: c.Transcription.Language,
 		Model:    c.Transcription.Model,
 		Keywords: c.Keywords,
+		Threads:  c.Transcription.Threads,
 	}
 
 	config.APIKey = c.resolveAPIKeyForProvider(c.Transcription.Provider)

internal/config/save.go

@@ -66,9 +66,10 @@ keywords = []
 # ─────────────────────────────────────────────────────────────────────────────
 
 [transcription]
-  provider = "openai"          # "openai", "groq-transcription", "groq-translation", "mistral-transcription", "elevenlabs"
+  provider = "openai"          # "openai", "groq-transcription", "groq-translation", "mistral-transcription", "elevenlabs", "whisper-cpp"
   language = ""                # Language code (empty = auto-detect, "en", "it", "es", "fr", etc.)
   model = "whisper-1"          # Model: OpenAI="whisper-1", Groq="whisper-large-v3", Mistral="voxtral-mini-latest", ElevenLabs="scribe_v1"
+  threads = 0                  # CPU threads for local transcription (0 = auto: uses NumCPU-1)
 
 # ─────────────────────────────────────────────────────────────────────────────
 # LLM Post-Processing (Recommended)

internal/config/types.go

@@ -60,6 +60,7 @@ type TranscriptionConfig struct {
 	APIKey   string `toml:"api_key"`
 	Language string `toml:"language"`
 	Model    string `toml:"model"`
+	Threads  int    `toml:"threads"` // CPU threads for local transcription (0 = auto: NumCPU-1)
 }
 
 type InjectionConfig struct {

internal/transcriber/transcriber.go

@@ -28,6 +28,7 @@ type Config struct {
 	Language string
 	Model    string
 	Keywords []string
+	Threads  int // CPU threads for local transcription (0 = auto)
 }
 
 // mapConfigProviderToRegistryName maps config provider names to provider registry names