- Add retry logic for 403 GCP permission errors (max 10 retries)
- Implement exponential backoff with 2s cap (200ms → 400ms → 800ms → 2000ms)
- Detect patterns: PERMISSION_DENIED, Cloud AI Companion API not enabled, etc.
🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)
- Add isRetryableResponse() to detect SUBSCRIPTION_REQUIRED 403 errors for retry handling
- Remove JSDoc comments from isRetryableError() for clarity
- Add debug logging for request/response details (streaming flag, status, content-type)
- Refactor transformStreamingResponse() to use TransformStream for true streaming
- Replace buffering approach with incremental chunk processing
- Implement createSseTransformStream() for line-by-line transformation
- Reduces memory footprint and Time-To-First-Byte (TTFB)
- Update SSE content-type detection to include alt=sse URL parameter
- Simplify response transformation logic for non-streaming path
- Add more granular debug logging for thought signature extraction
🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)
- Add message-converter.ts for OpenAI messages to Gemini contents conversion
- Use SKIP_THOUGHT_SIGNATURE_VALIDATOR as default signature (CLIProxyAPI approach)
- Restore loadCodeAssist API call to get user's actual project ID
- Improve debug logging for troubleshooting
- Fix tool normalization edge cases
🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)
Gemini 3 Pro requires thoughtSignature on function call blocks in
subsequent requests. This commit:
- Add thought-signature-store for session-based signature storage
- Extract signature from both streaming (SSE) and non-streaming responses
- Inject signature into functionCall parts on subsequent requests
- Maintain consistent sessionId per fetch instance
Debug logging available via ANTIGRAVITY_DEBUG=1
🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)
Pass-through path (non-string body) now preserves Authorization header.
This ensures authentication works even when request transformation is bypassed.
🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)
