0.6.431.45

• Fix: Prevent OOM kills and orphaned agent processes from interrupting active turns.
  • Concurrency and available-memory gate (patches/turn-resilience.mjs, runner.mjs): bounds concurrent active
    agent turns across the host (defaultMaxSlots based on system RAM, e.g. 4 on an 8 GB Raspberry Pi) and waits for
    MemAvailable headroom on slots 1..N-1 while keeping slot 0 unconditionally open, preventing bursts of
    simultaneously started cards from exhausting RAM and swap.
  • Prioritize add-on infrastructure over expendable agent subprocesses under OOM (raiseOomScoreAdj): harness
    workers (runner.mjs) raise their /proc/self/oom_score_adj to 500 and agent CLI children (agy, claude,
    codex, bridge.mjs) to 600, so the Linux kernel OOM killer never kills the web host, operator, or dieter
    daemon (oom_score_adj: 200) ahead of an agent worker.
  • Clean worker and provider-bridge teardown on daemon crash (runner.mjs, local-sandbox.mjs,
    antigravity-runtime.mjs, Supervisor.kt):
    • runner.mjs guards process.stdout against unhandled EPIPE errors and detects parent daemon death
      (process.ppid), unwinding the active session and stopping sandbox child processes instead of crashing and
      stranding children.
    • local-sandbox.mjs prefixes exec when launching --bridge-state-dir provider bridges under /bin/sh -lc so
      node bridge.mjs is the process-group leader (PID == PGID) recorded in bridge-meta.json.
    • antigravity-runtime.mjs awaits agy termination in doStop() and doDestroy(), escalating from SIGTERM to
      SIGKILL if agy does not exit within the grace window.
    • DaemonSupervisor reaps any lingering worker process groups (.dieter-worker-*.pid), provider bridges
      (bridge-meta.json), and orphaned headless agent CLIs whenever the daemon exits or on operator startup.