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

progress.txt

@@ -10,16 +10,17 @@ Started: Sun Feb  1 12:22:47 AM CET 2026
 - Full 57 language list from OpenAI Whisper
 - All tests passing, typecheck passes
 
-### Task 8: Migrate OpenAI provider to new Model structure
-- Added gpt-4o-transcribe and gpt-4o-mini-transcribe transcription models
-- Removed gpt-4-turbo and gpt-3.5-turbo LLM models (not in PRD)
-- OpenAI now has 5 models: 3 transcription (whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe) + 2 LLM (gpt-4o-mini, gpt-4o)
-- All models have AdapterType='openai', Endpoint with BaseURL='https://api.openai.com'
-- All models use language.AllLanguageCodes() for SupportedLanguages (57 languages)
-- Updated provider_test.go to expect 3 transcription and 2 LLM models
+### Task 16: Update config.ToTranscriberConfig to work with new architecture
+- Added `Threads int` field to `TranscriptionConfig` in types.go (for local transcription CPU threads)
+- Added `Threads int` field to `transcriber.Config` struct
+- Updated `ToTranscriberConfig()` to pass Threads from config
+- Updated config template in save.go with `threads = 0` and comment explaining auto-detection (NumCPU-1)
+- Added whisper-cpp to provider list in config template
+- Config package doesn't import provider - factory handles model lookup
 - All tests passing, typecheck passes
 
 
+
 ### Task 3: Create Model type with full metadata
 - Created `internal/provider/model.go`
 - ModelType enum: Transcription, LLM

tasks/prd.jsonc

@@ -392,7 +392,7 @@
 				"Config doesn't import provider package (factory does)",
 				"Typecheck passes"
 			],
-			"passes": false
+			"passes": true
 		},
 		{
 			"title": "Write tests for transcriber factory",