- Add AntigravityTokenRefreshError custom error class with code, description, and status fields
- Implement parseOAuthErrorPayload() for parsing Google's various OAuth error response formats
- Add retry logic with exponential backoff (3 retries, 1s→2s→4s delay) for transient failures
- Add special handling for invalid_grant error - immediately throws without retry and clears caches
- Add invalidateProjectContextByRefreshToken() for selective cache invalidation
- Update fetch.ts error handling to work with new error class and cache invalidation
🤖 Generated with assistance of OhMyOpenCode (https://github.com/code-yeongyu/oh-my-opencode)
When project ID fetching failed, an empty string was returned causing 404 errors on API requests. Now uses ANTIGRAVITY_DEFAULT_PROJECT_ID as fallback:
- isFreeTier(): Returns true when tierId is undefined (free tier by default)
- Import ANTIGRAVITY_DEFAULT_PROJECT_ID constant
- Replace empty project ID returns with fallback in all code paths:
- When loadCodeAssist returns null
- When PAID tier is detected
- When non-FREE tier without project
- When onboard/managed project ID fetch fails
Matches behavior of NoeFabris/opencode-antigravity-auth implementation.
🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)
- Added isFreeTier() helper to match 'free', 'free-tier', or any tier starting with 'free'
- Replaced all hardcoded 'FREE' comparisons with isFreeTier() calls
- Fixes issue where FREE tier users couldn't authenticate due to tier ID mismatch
- Added comprehensive debug logging for troubleshooting (ANTIGRAVITY_DEBUG=1)
- Verified: onboardUser API now correctly called for FREE tier users
🤖 Generated with assistance of OhMyOpenCode (https://github.com/code-yeongyu/oh-my-opencode)
- Removed random project ID generation (doesn't work for FREE tier)
- Added onboardManagedProject() to call onboardUser API for server-assigned managed project ID
- Updated type definitions: AntigravityUserTier, AntigravityOnboardUserPayload
- FREE tier users now get proper project IDs from Google instead of PERMISSION_DENIED errors
- Reference: https://github.com/shekohex/opencode-google-antigravity-auth🤖 Generated with assistance of OhMyOpenCode (https://github.com/code-yeongyu/oh-my-opencode)
This fix adds CLIProxyAPI-compatible random project ID generation when loadCodeAssist API fails to return a project ID. This allows FREE tier users to use the API without RESOURCE_PROJECT_INVALID errors.
Changes:
1. Added generateRandomProjectId() function matching CLIProxyAPI implementation
2. Changed fallback from empty string "" to generateRandomProjectId()
3. Cache all results (not just when projectId exists)
4. Removed unused ANTIGRAVITY_DEFAULT_PROJECT_ID import
🤖 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)
YeonGyu-Kim