34 test files read static/*.js via read_text()/open() without an encoding,
so Python's cp1252 default on Windows choked on non-Latin1 bytes and errored
at collection (Ubuntu CI defaults to utf-8, so it never saw this). Add
explicit encoding="utf-8" to those reads — purely mechanical, no assertion
changes.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- Remove duplicate mobile-close-btn from HTML
- Remove dead .mobile-close-btn CSS rules; unhide .close-preview at all viewports
- Change btnClearPreview tooltip from 'Hide workspace panel' to 'Close'
- Update tests across test_sprint41.py, test_sprint44.py, test_issue781.py,
and test_mobile_layout.py to match new single-button model
- quota_exhausted error type: distinguishes credit exhaustion from rate limits
- Streaming errors persisted to session file so they survive page reload
- _error flag excludes persisted errors from subsequent LLM API calls
- stream_end and title SSE events use original session_id (not s.session_id which rotates during context compaction)
Fixes#739, #652, #653
