Ollama's OpenAI-compatible endpoint handles reasoning natively via the
`reasoning` field in streaming chunks. Treating Ollama as a
reasoning-tag provider incorrectly forces <think>/<final> tag
enforcement, which causes stripBlockTags() to discard all output
(since Ollama models don't emit <final> tags), resulting in
'(no output)' for every Ollama model.
This fix removes 'ollama' from the isReasoningTagProvider() check,
allowing Ollama models to work correctly through the standard
content/reasoning field separation.
- Enforces strict buffering when enforceFinalTag is enabled.
- Prevents 'thinking out loud' planning steps (e.g. '*Locating Manulife*') from leaking to WhatsApp.
- Hardens <final> tag stripping to remove nested/hallucinated tags.
- Added src/utils/provider-utils.ts to track reasoning provider logic
- Updated isReasoningTagProvider to loosely match 'google-antigravity' (fixes sub-models)
- Enabled enforceFinalTag in reply.ts when provider matches
- Verified <final> tag stripping logic in pi-embedded-subscribe.ts
- Updated pi-embedded-runner to use consistent provider check for prompt hints
