0d9ec354e7
- Added Gemini thinking-loop detection helpers for near-duplicate and verbatim output checks. - Wrapped `stream`, `streamPiNative`, and `streamSimple` dispatches with the loop guard. - Emitted retryable empty-content loop errors and stopped completion events on loop hits. - Added `enableGeminiThinkingLoopGuard` options for OpenAI compatibility with Gemini defaults and overrides.