Starlette 1.3.x prefers httpx2 for starlette.testclient.TestClient; plain
httpx still works but emits StarletteDeprecationWarning.
- Pin httpx2==2.9.1 (keep httpx for MCP/runtime)
- Centralize Web UI TestClient import via tests/webui_testclient.py
- Point all test_webui_* modules at the helper
- Add regression tests that the deprecation warning is gone
Closes#682
Adds read-only /worktrees and /api/worktrees routes that scan branches/
directories, classify worktree state, flag missing preserved worktrees from
the issue lock, and surface the canonical cleanup prompt without deletion.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>