add Threads field to transcriber config for local providers

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