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* fix: add session lifecycle guards to prevent runaway API spend (#1590) Three root causes allowed 30+ subprocess accumulation over 36 hours: 1. SIGTERM-killed processes (code 143) triggered crash recovery and immediately respawned — now detected and treated as intentional termination (aborts controller so wasAborted=true in .finally). 2. No wall-clock limit: sessions ran for 13+ hours continuously spending tokens — now refuses new generators after 4 hours and drains the pending queue to prevent further spawning. 3. Duplicate --resume processes for the same session UUID — now killed and unregistered before a new spawn is registered. Generated by Claude Code Vibe coded by ousamabenyounes Co-Authored-By: Claude <noreply@anthropic.com> * fix: use normalized errorMsg in logger.error payload and annotate SIGTERM override Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * fix: use persisted createdAt for wall-clock guard and bind abortController locally to prevent stale abort Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * chore: re-trigger CodeRabbit review after rate limit reset * fix: defer process unregistration until exit and align boundary test with strict > (#1693) - ProcessRegistry: don't unregister PID immediately after SIGTERM — let the existing 'exit' handler clean up when the process actually exits, preventing tracking loss for still-live processes. - Test: align wall-clock boundary test with production's strict `>` operator (exactly 4h is NOT terminated, only >4h is). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude <noreply@anthropic.com>