- Deleted the RATE_LIMIT_ROUTING_ANALYSIS.md document as it is no longer needed.
- Enhanced the regression test to provide detailed failure information, including the first failure's stderr output.
- Updated the plugin to handle 400 errors ("Prompt too long") with a synthetic response instead of returning a session-locking error.
- Introduced createSyntheticErrorResponse function to generate a synthetic SSE response for error messages, allowing continued session usage.
- Added tests for createSyntheticErrorResponse to ensure correct behavior and structure of the synthetic SSE events.
- Add 2s deduplication window to prevent rate limit counter inflation from concurrent 429s
- Separate cooldown system from rate limits for non-429 errors (auth failures, 5xx)
- Add quota_fallback config option for automatic quota switching on rate limit
- Add toast notification for 400 'Prompt is too long' errors guiding users to /compact
- Add 5 new cooldown unit tests
- Enhance regression test suite with concurrent test infrastructure
- Add comprehensive rate limit analysis documentation
- Add test-models.ts for validating all supported model endpoints
- Add test-regression.ts for multi-turn regression testing (Issue #50)
- Consolidate Gemini 3 Flash variants (low/medium/high) into single model
- Fix schema structure by flattening nested signature_cache properties
- Extract streaming transformer utilities to dedicated module
