GitHub Copilot performs rolling model updates which sometimes return
'400 Bad Request' when a model is temporarily unavailable. This error
was not in the retryable message patterns, causing model fallback to
not trigger and users getting stuck.
Changes:
- Added 'bad request' to RETRYABLE_MESSAGE_PATTERNS in model-error-classifier.ts
- Added test cases for 'bad request' pattern matching
Fixes#3130
- Add afterAll(() => { mock.restore() }) to 52 test files missing cleanup
- Rewrite create-tool-guard-hooks.test.ts to use spyOn instead of barrel mock
- Fix skill-mcp-manager OAuth tests with missing mockTokens/mockLogin definitions
- Fix start-work hook: show worktree active block on resume with existing worktree_path
- Extract createWorktreeActiveBlock to worktree-block.ts to avoid circular import
- Replace 80-line isolated test runner CI config with single `bun test` command
- Mock getOmoOpenCodeCacheDir to use temp directories
- Clear real cache files in beforeEach to prevent pollution
- Add top-level beforeEach/afterEach in model-availability.test.ts
- Use mock.module for proper test isolation
- Fixes model-error-classifier, model-availability, connected-providers-cache
YeonGyu-Kim