- Added `authenticateForTests` utility to streamline API key authentication in tests, using a fallback for local testing.
- Updated context image test to include authentication step before navigation, ensuring proper session handling.
- Increased timeout for context view visibility to accommodate slower server responses.
- Introduced a test API key in the Playwright configuration for consistent testing environments.
Update waitForContextFile, selectContextFile, and waitForFileContentToLoad
helpers to use Playwright's expect().toPass() with retry intervals, handling
race conditions between API calls completing and UI re-rendering. Also add
waitForNetworkIdle after dialog closes in context-file-management test.
