- Add CookieValidationResult Pydantic model with valid, username, user_id, reason fields
- Add validate_cookie async method to ZhihuLogin class
- Validate cookie via Zhihu /api/v4/me endpoint
- Handle 200, 401, and other status codes appropriately
- Handle network errors gracefully
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
TDD GREEN phase - implementation passes all 8 tests:
- ZhihuLoginResult: Pydantic model for login results
- ZhihuLogin: Main class with QR code login flow
- LOGIN_URL: https://www.zhihu.com/signin
- CANVAS_SELECTORS: Multiple fallback selectors for QR canvas
- _find_qrcode_canvas(): Find canvas with fallback selectors
- _save_qrcode_image(): Save QR code to intermediate directory
- check_login_cookie(): Detect z_c0 cookie for login state
- get_cookies_str(): Extract cookie string from context
- _wait_for_login(): Poll with configurable timeout (tenacity)
- login_by_qrcode(): Main entry point for login flow
Key design decisions:
- Uses tenacity Retrying for configurable timeout
- QR code saved to intermediate_path with timestamp
- Multiple canvas selectors for robustness
- Proper browser lifecycle management
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
starmen1265