Builds on e11187208f (salvage of #72206 by @luyifan, authorship
preserved) which added the post-timeout session reset. This commit
completes the Phase 3b contract:
- suspect flag: a command timeout marks the session key suspect;
the NEXT _get_session_info for that key health-checks and recycles
the session instead of handing back the poisoned handle (#72205)
- flag cleared on fresh-session store so a healthy new session is
never spuriously recycled; cross-key leakage fixed
- wedged-vs-alive rule (#68139): after a timeout, if the daemon's
socket still answers, recycle the session only; if it is
unresponsive (or no socket exists to probe — conservative), tree-
kill via agent.deadline.kill_process_tree and evict
- negative probe: successful commands never mark or recycle
Tests: tests/tools/test_browser_suspect_recycle.py (20 tests:
mark-once, recycle-then-succeed, success-never-recycles, tree-kill
invoked on the wedged path with pid assertion, flag lifecycle).
Co-authored-by: luyifan <al3060388206@gmail.com>
kshitijk4poor