PR #22791 fix(server): Codex recovers after its app-server process is killed -- evidence transcript
AFTER  = 1afd783c5e4ee4764ccc24bbe1649d25be539cee (/home/ubuntu/wt/pr-22791)
BEFORE = ed3f965e0768f9a77729a17c5145a90ff3ab6210 (merge-base, /tmp/ev-22791/base)
ALL TURNS ARE DRIVEN BY A STAND-IN codex app-server (/tmp/ev-22791/driver/standin-app-server.mjs) because real Codex model turns 429 tonight.
The server is the real one (node apps/server/src/bin.ts serve --base-dir /tmp/ev-22791/home-*). Turns are driven through the server's own MCP endpoint and the `t3 thread` CLI.
Release reason: it is not logged verbatim. ProviderSessionManager.releaseStatusFor maps runtime_error to provider-session status 'error' (any other reason gives 'stopped'), so the transcript reads the projection row right after each event. 'writeReleasedSessionEvents' counts trace spans (the trace file rotated once on AFTER, during R6).
Server pids: AFTER 1971878 (R3-R6). BEFORE 1973378 (R3; then poisoned), 1979406 (R4), 1983416 (R4b idle), 1979427 (R5), 1979405 (R6). All were stopped with SIGTERM.

====================================================================================================
ROW R3
====================================================================================================
--- BEFORE (R3) ---
BEFORE note: after the kill, the HANG run was still 'running' at 70 s and the next turn sat 'queued' behind it (no respawn). The same BEFORE server's next turns on a NEW thread (first lines of the BEFORE R4 attempt on server 1973378, excerpted below) failed at once with read-process-exit-status, and no app-server was respawned.
=== side=before checkout=/tmp/ev-22791/base HEAD=ed3f965e0768f9a77729a17c5145a90ff3ab6210 server_pid=1973378 (STAND-IN codex app-server) ===

##### R3 SIGKILL during a running turn, then the next turn (before) #####
  thread R3=mcp:1234eb37-95d7-41ce-b40d-ee0948986d28
  [wait mcp:1234eb37-95d7-41ce-b40d-ee0948986d28] after 0.9s: {"threadId":"mcp:1234eb37-95d7-41ce-b40d-ee0948986d28","runId":"run:thread:mcp%3A1234eb37-95d7-41ce-b40d-ee0948986d28:ordinal:1","status":"completed","timedOut":false}
  [ps] children of server 1973378:
        PID    PPID ELAPSED COMMAND
    1974589 1973378       0 /home/ubuntu/.local/share/vite-plus/js_runtime/node/26.12.1/bin/node /tmp/ev-22791/driver/standin-app-server.mjs app-server
    1974725 1973378       0 git rev-parse --git-path index
  app-server pid A=1974589  (running HANG turn)
  13:41:27.693954474 kill -9 1974589 
  [wait mcp:1234eb37-95d7-41ce-b40d-ee0948986d28] after 70.2s: {"threadId":"mcp:1234eb37-95d7-41ce-b40d-ee0948986d28","runId":"run:thread:mcp%3A1234eb37-95d7-41ce-b40d-ee0948986d28:ordinal:2","status":"running","timedOut":true}
  (mcp:1234eb37-95d7-41ce-b40d-ee0948986d28)   [run] 2 running started=2026-10-22T13:41:24.539Z completed=null
  (mcp:1234eb37-95d7-41ce-b40d-ee0948986d28)   [run] 1 completed started=2026-10-22T13:41:19.035Z completed=2026-10-22T13:41:19.530Z
  [ps] children of server 1973378:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 112]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:41:18.931Z
  [log grep R3-kill] read-process-exit-status=0 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=0 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
  [wait mcp:1234eb37-95d7-41ce-b40d-ee0948986d28] after 30.2s: {"threadId":"mcp:1234eb37-95d7-41ce-b40d-ee0948986d28","runId":"run:thread:mcp%3A1234eb37-95d7-41ce-b40d-ee0948986d28:ordinal:3","status":"queued","timedOut":true}
  (mcp:1234eb37-95d7-41ce-b40d-ee0948986d28)   [run] 3 queued started=null completed=null
  (mcp:1234eb37-95d7-41ce-b40d-ee0948986d28)   [run] 2 running started=2026-10-22T13:41:24.539Z completed=null
  (mcp:1234eb37-95d7-41ce-b40d-ee0948986d28)   [run] 1 completed started=2026-10-22T13:41:19.035Z completed=2026-10-22T13:41:19.530Z
  app-server pids now: 
  [ps] children of server 1973378:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 112]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:41:18.931Z
  [log grep R3-next] read-process-exit-status=0 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=0 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
=== side=before checkout=/tmp/ev-22791/base HEAD=ed3f965e0768f9a77729a17c5145a90ff3ab6210 server_pid=1973378 (STAND-IN codex app-server) ===

##### R4 numeric exit(17) mid-turn and idle (before) #####
  thread R4=mcp:8baeb381-0a35-4b54-ab5d-23bace660b70
  [wait mcp:8baeb381-0a35-4b54-ab5d-23bace660b70] after 1.5s: {"threadId":"mcp:8baeb381-0a35-4b54-ab5d-23bace660b70","runId":"run:thread:mcp%3A8baeb381-0a35-4b54-ab5d-23bace660b70:ordinal:1","status":"failed","timedOut":false}
  app-server pids before: 
  [ps] children of server 1973378:
        PID    PPID ELAPSED COMMAND
  -- R4a mid-turn: prompt EXIT:17 (stand-in exits 300ms after turn/started)
  [wait mcp:8baeb381-0a35-4b54-ab5d-23bace660b70] after 1.5s: {"threadId":"mcp:8baeb381-0a35-4b54-ab5d-23bace660b70","runId":"run:thread:mcp%3A8baeb381-0a35-4b54-ab5d-23bace660b70:ordinal:2","status":"failed","timedOut":false}
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [run] 2 failed started=null completed=2026-10-22T13:43:31.668Z
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [run] 1 failed started=null completed=2026-10-22T13:43:25.687Z
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [error item run=1] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [error item run=2] Codex App Server transport operation 'read-process-exit-status' failed.
  [ps] children of server 1973378:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 288]
    [13:43:30.081] WARN (#7030): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:43:30.207] WARN (#7025): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:43:30.425] WARN (#7025): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:43:30.844] WARN (#7036): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:41:18.931Z
  [log grep R4a] read-process-exit-status=8 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=8 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=34 TurnStartError=0
  [wait mcp:8baeb381-0a35-4b54-ab5d-23bace660b70] after 1.5s: {"threadId":"mcp:8baeb381-0a35-4b54-ab5d-23bace660b70","runId":"run:thread:mcp%3A8baeb381-0a35-4b54-ab5d-23bace660b70:ordinal:3","status":"failed","timedOut":false}
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [run] 3 failed started=null completed=2026-10-22T13:43:38.231Z
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [run] 2 failed started=null completed=2026-10-22T13:43:31.668Z
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [run] 1 failed started=null completed=2026-10-22T13:43:25.687Z
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [error item run=1] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [error item run=2] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [error item run=3] Codex App Server transport operation 'read-process-exit-status' failed.
  app-server pids now: 
  [new server log lines matching keys since mark 464]
    [13:43:36.650] WARN (#7033): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:43:36.769] WARN (#7025): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:43:36.988] WARN (#7036): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:43:37.408] WARN (#7036): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:41:18.931Z
  [log grep R4a-next] read-process-exit-status=12 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=12 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=51 TurnStartError=0
  -- R4b idle: SIGUSR1 to app-server -> stand-in calls process.exit(17) while no turn runs
  app-server pids before idle exit: 
  [ps] children of server 1973378:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 640]
  [wait mcp:8baeb381-0a35-4b54-ab5d-23bace660b70] after 1.5s: {"threadId":"mcp:8baeb381-0a35-4b54-ab5d-23bace660b70","runId":"run:thread:mcp%3A8baeb381-0a35-4b54-ab5d-23bace660b70:ordinal:4","status":"failed","timedOut":false}
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [run] 4 failed started=null completed=2026-10-22T13:43:48.753Z
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [run] 3 failed started=null completed=2026-10-22T13:43:38.231Z
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [run] 2 failed started=null completed=2026-10-22T13:43:31.668Z
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [run] 1 failed started=null completed=2026-10-22T13:43:25.687Z
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [error item run=1] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [error item run=2] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [error item run=3] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [error item run=4] Codex App Server transport operation 'read-process-exit-status' failed.
  app-server pids now: 
  [ps] children of server 1973378:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 640]
    [13:43:47.172] WARN (#7025): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:43:47.296] WARN (#7036): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:43:47.515] WARN (#7036): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:43:47.937] WARN (#7033): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:41:18.931Z
  [log grep R4b] read-process-exit-status=16 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=16 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=68 TurnStartError=0
=== side=before checkout=/tmp/ev-22791/base HEAD=ed3f965e0768f9a77729a17c5145a90ff3ab6210 server_pid=1973378 (STAND-IN codex app-server) ===

##### R5 two threads sharing one app-server (before) #####
  [wait mcp:704847d6-1ce0-4b20-b805-358865b202c9] after 1.5s: {"threadId":"mcp:704847d6-1ce0-4b20-b805-358865b202c9","runId":"run:thread:mcp%3A704847d6-1ce0-4b20-b805-358865b202c9:ordinal:1","status":"failed","timedOut":false}
  [wait mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14] after 1.5s: {"threadId":"mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14","runId":"run:thread:mcp%3A6e6c90ee-3ccc-4a7a-85a1-bb8096430b14:ordinal:1","status":"failed","timedOut":false}
  T1=mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14 T2=mcp:704847d6-1ce0-4b20-b805-358865b202c9
  [ps] children of server 1973378:
        PID    PPID ELAPSED COMMAND
  shared app-server pid(s) A=
  13:44:13.954260584 kill -9  (T1 running, T2 idle)
  [wait mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14] after 0.2s: {"threadId":"mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14","runId":"run:thread:mcp%3A6e6c90ee-3ccc-4a7a-85a1-bb8096430b14:ordinal:2","status":"failed","timedOut":false}
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 2 failed started=null completed=2026-10-22T13:44:12.380Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 1 failed started=null completed=2026-10-22T13:44:06.732Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=1] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=2] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [run] 1 failed started=null completed=2026-10-22T13:44:00.969Z
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [error item run=1] Codex App Server transport operation 'read-process-exit-status' failed.
  [new server log lines matching keys since mark 1344]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:41:18.931Z
  [log grep R5a-kill] read-process-exit-status=28 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=28 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=119 TurnStartError=0
  [wait mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14] after 1.5s: {"threadId":"mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14","runId":"run:thread:mcp%3A6e6c90ee-3ccc-4a7a-85a1-bb8096430b14:ordinal:3","status":"failed","timedOut":false}
  [wait mcp:704847d6-1ce0-4b20-b805-358865b202c9] after 1.5s: {"threadId":"mcp:704847d6-1ce0-4b20-b805-358865b202c9","runId":"run:thread:mcp%3A704847d6-1ce0-4b20-b805-358865b202c9:ordinal:2","status":"failed","timedOut":false}
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 3 failed started=null completed=2026-10-22T13:44:20.734Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 2 failed started=null completed=2026-10-22T13:44:12.380Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 1 failed started=null completed=2026-10-22T13:44:06.732Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=1] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=2] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=3] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [run] 2 failed started=null completed=2026-10-22T13:44:26.383Z
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [run] 1 failed started=null completed=2026-10-22T13:44:00.969Z
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [error item run=1] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [error item run=2] Codex App Server transport operation 'read-process-exit-status' failed.
  [ps] children of server 1973378:
        PID    PPID ELAPSED COMMAND
  app-server pids now B=
  [new server log lines matching keys since mark 1344]
    [13:44:19.162] WARN (#7025): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:19.280] WARN (#7033): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:19.497] WARN (#7033): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:19.915] WARN (#7030): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:24.811] WARN (#7033): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:704847d6-1ce0-4b20-b805-358865b202c9.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:24.931] WARN (#7030): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:704847d6-1ce0-4b20-b805-358865b202c9.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:25.149] WARN (#7036): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:704847d6-1ce0-4b20-b805-358865b202c9.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:25.566] WARN (#7030): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:704847d6-1ce0-4b20-b805-358865b202c9.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:41:18.931Z
  [log grep R5a-next] read-process-exit-status=36 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=36 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=153 TurnStartError=0
  [stand-in frames since kill]
  -- R5b both running at the kill
  [ps] children of server 1973378:
        PID    PPID ELAPSED COMMAND
  13:44:38.884909127 kill -9 
  [wait mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14] after 0.2s: {"threadId":"mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14","runId":"run:thread:mcp%3A6e6c90ee-3ccc-4a7a-85a1-bb8096430b14:ordinal:4","status":"failed","timedOut":false}
  [wait mcp:704847d6-1ce0-4b20-b805-358865b202c9] after 0.2s: {"threadId":"mcp:704847d6-1ce0-4b20-b805-358865b202c9","runId":"run:thread:mcp%3A704847d6-1ce0-4b20-b805-358865b202c9:ordinal:3","status":"failed","timedOut":false}
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 4 failed started=null completed=2026-10-22T13:44:33.069Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 3 failed started=null completed=2026-10-22T13:44:20.734Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 2 failed started=null completed=2026-10-22T13:44:12.380Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 1 failed started=null completed=2026-10-22T13:44:06.732Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=1] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=2] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=3] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=4] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [run] 3 failed started=null completed=2026-10-22T13:44:37.267Z
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [run] 2 failed started=null completed=2026-10-22T13:44:26.383Z
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [run] 1 failed started=null completed=2026-10-22T13:44:00.969Z
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [error item run=1] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [error item run=2] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [error item run=3] Codex App Server transport operation 'read-process-exit-status' failed.
  [new server log lines matching keys since mark 2048]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:41:18.931Z
  [log grep R5b-kill] read-process-exit-status=44 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=44 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=187 TurnStartError=0
  [wait mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14] after 1.5s: {"threadId":"mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14","runId":"run:thread:mcp%3A6e6c90ee-3ccc-4a7a-85a1-bb8096430b14:ordinal:5","status":"failed","timedOut":false}
  [wait mcp:704847d6-1ce0-4b20-b805-358865b202c9] after 1.5s: {"threadId":"mcp:704847d6-1ce0-4b20-b805-358865b202c9","runId":"run:thread:mcp%3A704847d6-1ce0-4b20-b805-358865b202c9:ordinal:4","status":"failed","timedOut":false}
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 5 failed started=null completed=2026-10-22T13:44:45.885Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 4 failed started=null completed=2026-10-22T13:44:33.069Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 3 failed started=null completed=2026-10-22T13:44:20.734Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 2 failed started=null completed=2026-10-22T13:44:12.380Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [run] 1 failed started=null completed=2026-10-22T13:44:06.732Z
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=1] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=2] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=3] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=4] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14)   [error item run=5] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [run] 4 failed started=null completed=2026-10-22T13:44:51.608Z
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [run] 3 failed started=null completed=2026-10-22T13:44:37.267Z
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [run] 2 failed started=null completed=2026-10-22T13:44:26.383Z
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [run] 1 failed started=null completed=2026-10-22T13:44:00.969Z
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [error item run=1] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [error item run=2] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [error item run=3] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:704847d6-1ce0-4b20-b805-358865b202c9)   [error item run=4] Codex App Server transport operation 'read-process-exit-status' failed.
  app-server pids now: 
  [new server log lines matching keys since mark 2048]
    [13:44:44.311] WARN (#7030): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:44.430] WARN (#7033): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:44.648] WARN (#7033): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:45.066] WARN (#7025): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:6e6c90ee-3ccc-4a7a-85a1-bb8096430b14.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:50.040] WARN (#7025): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:704847d6-1ce0-4b20-b805-358865b202c9.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:50.158] WARN (#7033): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:704847d6-1ce0-4b20-b805-358865b202c9.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:50.375] WARN (#7033): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:704847d6-1ce0-4b20-b805-358865b202c9.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:44:50.791] WARN (#7030): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:704847d6-1ce0-4b20-b805-358865b202c9.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:41:18.931Z
  [log grep R5b-next] read-process-exit-status=52 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=52 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=221 TurnStartError=0

--- BEFORE R3 aftermath: same server 1973378, next turns on a new thread ---
##### R4 numeric exit(17) mid-turn and idle (before) #####
  thread R4=mcp:8baeb381-0a35-4b54-ab5d-23bace660b70
  [wait mcp:8baeb381-0a35-4b54-ab5d-23bace660b70] after 1.5s: {"threadId":"mcp:8baeb381-0a35-4b54-ab5d-23bace660b70","runId":"run:thread:mcp%3A8baeb381-0a35-4b54-ab5d-23bace660b70:ordinal:1","status":"failed","timedOut":false}
  app-server pids before: 
  [ps] children of server 1973378:
        PID    PPID ELAPSED COMMAND
  -- R4a mid-turn: prompt EXIT:17 (stand-in exits 300ms after turn/started)
  [wait mcp:8baeb381-0a35-4b54-ab5d-23bace660b70] after 1.5s: {"threadId":"mcp:8baeb381-0a35-4b54-ab5d-23bace660b70","runId":"run:thread:mcp%3A8baeb381-0a35-4b54-ab5d-23bace660b70:ordinal:2","status":"failed","timedOut":false}
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [run] 2 failed started=null completed=2026-10-22T13:43:31.668Z
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [run] 1 failed started=null completed=2026-10-22T13:43:25.687Z
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [error item run=1] Codex App Server transport operation 'read-process-exit-status' failed.
  (mcp:8baeb381-0a35-4b54-ab5d-23bace660b70)   [error item run=2] Codex App Server transport operation 'read-process-exit-status' failed.
  [ps] children of server 1973378:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 288]
    [13:43:30.081] WARN (#7030): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:43:30.207] WARN (#7025): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:43:30.425] WARN (#7025): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:8baeb381-0a35-4b54-ab5d-23bace660b70.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:43:30.844] WARN (#7036): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
--- AFTER (R3) ---
=== side=after checkout=/home/ubuntu/wt/pr-22791 HEAD=1afd783c5e4ee4764ccc24bbe1649d25be539cee server_pid=1971878 (STAND-IN codex app-server) ===
##### R3 SIGKILL during a running turn, then the next turn (after) #####
  thread R3=mcp:a7d8e5b1-b871-41aa-96fd-30c814b22a3a
  [wait mcp:a7d8e5b1-b871-41aa-96fd-30c814b22a3a] after 0.5s: {"threadId":"mcp:a7d8e5b1-b871-41aa-96fd-30c814b22a3a","runId":"run:thread:mcp%3Aa7d8e5b1-b871-41aa-96fd-30c814b22a3a:ordinal:1","status":"completed","timedOut":false}
  [ps] children of server 1971878:
        PID    PPID ELAPSED COMMAND
    1972592 1971878     220 /home/ubuntu/.local/share/vite-plus/js_runtime/node/26.12.1/bin/node /tmp/ev-22791/driver/standin-app-server.mjs app-server
  app-server pid A=1972592  (running HANG turn)
  13:40:07.162563911 kill -9 1972592 
  [wait mcp:a7d8e5b1-b871-41aa-96fd-30c814b22a3a] after 0.3s: {"threadId":"mcp:a7d8e5b1-b871-41aa-96fd-30c814b22a3a","runId":"run:thread:mcp%3Aa7d8e5b1-b871-41aa-96fd-30c814b22a3a:ordinal:2","status":"failed","timedOut":false}
  [runs mcp:a7d8e5b1-b871-41aa-96fd-30c814b22a3a] []
  [ps] children of server 1971878:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 118]
    [13:40:07.225] WARN (#8892): orchestration V2 provider event ingestion failed
        cause: 'RunExecutionIngestError: Failed while ingesting orchestration V2 run execution run:thread:mcp%3Aa7d8e5b1-b871-41aa-96fd-30c814b22a3a:ordinal:2.\n' +
          '  [cause]: ProviderAdapterEventStreamError: Failed while streaming codex provider session provider-session:provider-instance:codex:shared events.\n' +
          "    [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '      [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '          at Module.systemError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '          at toPlatformError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "        [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:40:07.236] WARN (#8892): orchestration V2 failed to interrupt turn after ingestion failure
        cause: 'ProviderAdapterInterruptError: Failed to interrupt codex provider turn provider-turn:provider:codex:native-turn:standin-turn-1972592-5.\n' +
          "  [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '    [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '        at Module.systemError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '        at toPlatformError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "      [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
  [log grep R3-kill] read-process-exit-status=2 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=1 unexpectedly=0 WARN=4 ERROR=0 | trace: runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
  [wait mcp:a7d8e5b1-b871-41aa-96fd-30c814b22a3a] after 0.6s: {"threadId":"mcp:a7d8e5b1-b871-41aa-96fd-30c814b22a3a","runId":"run:thread:mcp%3Aa7d8e5b1-b871-41aa-96fd-30c814b22a3a:ordinal:3","status":"completed","timedOut":false}
  [runs mcp:a7d8e5b1-b871-41aa-96fd-30c814b22a3a] []
  app-server pids now: 1974071 
  [ps] children of server 1971878:
        PID    PPID ELAPSED COMMAND
    1974071 1971878       0 /home/ubuntu/.local/share/vite-plus/js_runtime/node/26.12.1/bin/node /tmp/ev-22791/driver/standin-app-server.mjs app-server
  [new server log lines matching keys since mark 188]
  [log grep R3-next] read-process-exit-status=2 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=1 unexpectedly=0 WARN=4 ERROR=0 | trace: runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=2 TurnStartError=0
=== side=after checkout=/home/ubuntu/wt/pr-22791 HEAD=1afd783c5e4ee4764ccc24bbe1649d25be539cee server_pid=1971878 (STAND-IN codex app-server) ===
====================================================================================================
ROW R4
====================================================================================================
--- BEFORE (R4) ---
BEFORE note: mid-turn exit(17) left the run 'running' (still at 70 s) and later turns 'queued', so the idle case was rerun alone on a fresh BEFORE server (before-r4b, pid 1983416).
=== side=before-r4 checkout=/tmp/ev-22791/base HEAD=ed3f965e0768f9a77729a17c5145a90ff3ab6210 server_pid=1979406 (STAND-IN codex app-server) ===

##### R4 numeric exit(17) mid-turn and idle (before-r4) #####
  thread R4=mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2
  [wait mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2] after 1.2s: {"threadId":"mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2","runId":"run:thread:mcp%3Aa5d3f86d-11f9-4331-a87d-51776c3bb1e2:ordinal:1","status":"completed","timedOut":false}
  app-server pids before: 1980821 
  [ps] children of server 1979406:
        PID    PPID ELAPSED COMMAND
    1980821 1979406       1 /home/ubuntu/.local/share/vite-plus/js_runtime/node/26.12.1/bin/node /tmp/ev-22791/driver/standin-app-server.mjs app-server
    1980987 1979406       0 [git]
  -- R4a mid-turn: prompt EXIT:17 (stand-in exits 300ms after turn/started)
  [wait mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2] after 70.2s: {"threadId":"mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2","runId":"run:thread:mcp%3Aa5d3f86d-11f9-4331-a87d-51776c3bb1e2:ordinal:2","status":"running","timedOut":true}
  (mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2)   [run] 2 running started=2026-10-22T13:45:41.699Z completed=null
  (mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2)   [run] 1 completed started=2026-10-22T13:45:35.651Z completed=2026-10-22T13:45:36.237Z
  [ps] children of server 1979406:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 112]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:45:35.467Z
  [log grep R4a] read-process-exit-status=0 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=0 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
  [wait mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2] after 30.1s: {"threadId":"mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2","runId":"run:thread:mcp%3Aa5d3f86d-11f9-4331-a87d-51776c3bb1e2:ordinal:3","status":"queued","timedOut":true}
  (mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2)   [run] 3 queued started=null completed=null
  (mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2)   [run] 2 running started=2026-10-22T13:45:41.699Z completed=null
  (mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2)   [run] 1 completed started=2026-10-22T13:45:35.651Z completed=2026-10-22T13:45:36.237Z
  app-server pids now: 
  [new server log lines matching keys since mark 114]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:45:35.467Z
  [log grep R4a-next] read-process-exit-status=0 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=0 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
  -- R4b idle: SIGUSR1 to app-server -> stand-in calls process.exit(17) while no turn runs
  app-server pids before idle exit: 
  [ps] children of server 1979406:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 114]
  [wait mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2] after 30.2s: {"threadId":"mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2","runId":"run:thread:mcp%3Aa5d3f86d-11f9-4331-a87d-51776c3bb1e2:ordinal:4","status":"queued","timedOut":true}
  (mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2)   [run] 4 queued started=null completed=null
  (mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2)   [run] 3 queued started=null completed=null
  (mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2)   [run] 2 running started=2026-10-22T13:45:41.699Z completed=null
  (mcp:a5d3f86d-11f9-4331-a87d-51776c3bb1e2)   [run] 1 completed started=2026-10-22T13:45:35.651Z completed=2026-10-22T13:45:36.237Z
  app-server pids now: 
  [ps] children of server 1979406:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 114]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:45:35.467Z
  [log grep R4b] read-process-exit-status=0 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=0 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0

=== side=before-r4b checkout=/tmp/ev-22791/base HEAD=ed3f965e0768f9a77729a17c5145a90ff3ab6210 server_pid=1983416 (STAND-IN codex app-server) ===

##### R4 numeric exit(17) mid-turn and idle (before-r4b) #####
  thread R4=mcp:b9ab474a-e5bb-4431-8ba7-6d4a778f19ba
  [wait mcp:b9ab474a-e5bb-4431-8ba7-6d4a778f19ba] after 0.7s: {"threadId":"mcp:b9ab474a-e5bb-4431-8ba7-6d4a778f19ba","runId":"run:thread:mcp%3Ab9ab474a-e5bb-4431-8ba7-6d4a778f19ba:ordinal:1","status":"completed","timedOut":false}
  app-server pids before: 1983861 
  [ps] children of server 1983416:
        PID    PPID ELAPSED COMMAND
    1983861 1983416       0 /home/ubuntu/.local/share/vite-plus/js_runtime/node/26.12.1/bin/node /tmp/ev-22791/driver/standin-app-server.mjs app-server
  -- R4b idle: SIGUSR1 to app-server -> stand-in calls process.exit(17) while no turn runs
  app-server pids before idle exit: 1983861 
  [ps] children of server 1983416:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 112]
  [wait mcp:b9ab474a-e5bb-4431-8ba7-6d4a778f19ba] after 0.2s: {"threadId":"mcp:b9ab474a-e5bb-4431-8ba7-6d4a778f19ba","runId":"run:thread:mcp%3Ab9ab474a-e5bb-4431-8ba7-6d4a778f19ba:ordinal:2","status":"failed","timedOut":false}
  (mcp:b9ab474a-e5bb-4431-8ba7-6d4a778f19ba)   [run] 2 failed started=2026-10-22T13:50:43.360Z completed=2026-10-22T13:50:43.404Z
  (mcp:b9ab474a-e5bb-4431-8ba7-6d4a778f19ba)   [run] 1 completed started=2026-10-22T13:50:34.525Z completed=2026-10-22T13:50:34.954Z
  (mcp:b9ab474a-e5bb-4431-8ba7-6d4a778f19ba)   [error item run=2] The provider could not start this turn. Retry the turn; if it keeps failing, check the provider setup and server logs.
  app-server pids now: 
  [ps] children of server 1983416:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 112]
    [13:50:43.401] ERROR (#7827): orchestration V2 provider turn start failed
        cause: 'ProviderAdapterTurnStartError: Failed to start run run:thread:mcp%3Ab9ab474a-e5bb-4431-8ba7-6d4a778f19ba:ordinal:2 on codex provider thread provider-thread:provider:codex:native-thread:pending%3Arun%3Athread%3Amcp%253Ab9ab474a-e5bb-4431-8ba7-6d4a778f19ba%3Aordinal%3A1.\n' +
          '  [cause]: CodexAppServerProcessExitedError: Codex App Server process exited with code 17\n' +
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:50:34.442Z
  [log grep R4b] read-process-exit-status=0 ProviderAdapterTurnStartError=1 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=0 ERROR=1 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=1

--- AFTER (R4) ---
=== side=after checkout=/home/ubuntu/wt/pr-22791 HEAD=1afd783c5e4ee4764ccc24bbe1649d25be539cee server_pid=1971878 (STAND-IN codex app-server) ===
##### R4 numeric exit(17) mid-turn and idle (after) #####
  thread R4=mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7
  [wait mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7] after 0.5s: {"threadId":"mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7","runId":"run:thread:mcp%3A62cc58bd-4b4b-434b-ade8-8e24dc12b0c7:ordinal:1","status":"completed","timedOut":false}
  app-server pids before: 1974071 
  [ps] children of server 1971878:
        PID    PPID ELAPSED COMMAND
    1974071 1971878      67 /home/ubuntu/.local/share/vite-plus/js_runtime/node/26.12.1/bin/node /tmp/ev-22791/driver/standin-app-server.mjs app-server
  -- R4a mid-turn: prompt EXIT:17 (stand-in exits 300ms after turn/started)
  [wait mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7] after 0.4s: {"threadId":"mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7","runId":"run:thread:mcp%3A62cc58bd-4b4b-434b-ade8-8e24dc12b0c7:ordinal:2","status":"failed","timedOut":false}
  (mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7)   [run] 2 failed started=2026-10-22T13:41:23.876Z completed=2026-10-22T13:41:24.336Z
  (mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7)   [run] 1 completed started=2026-10-22T13:41:18.714Z completed=2026-10-22T13:41:19.107Z
  (mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7)   [error item run=2] The provider event stream closed unexpectedly. Retry the turn; if it keeps failing, check the provider and server logs.
  [ps] children of server 1971878:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 188]
    [13:41:24.336] WARN (#9910): orchestration V2 provider event ingestion failed
        cause: 'RunExecutionIngestError: Failed while ingesting orchestration V2 run execution run:thread:mcp%3A62cc58bd-4b4b-434b-ade8-8e24dc12b0c7:ordinal:2.\n' +
          '  [cause]: ProviderAdapterEventStreamError: Failed while streaming codex provider session provider-session:provider-instance:codex:shared events.\n' +
          '    [cause]: CodexAppServerProcessExitedError: Codex App Server process exited with code 17\n' +
    [13:41:24.338] WARN (#9910): orchestration V2 failed to interrupt turn after ingestion failure
        cause: 'ProviderAdapterInterruptError: Failed to interrupt codex provider turn provider-turn:provider:codex:native-turn:standin-turn-1974071-4.\n' +
          '  [cause]: CodexAppServerProcessExitedError: Codex App Server process exited with code 17\n' +
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|error|ProviderAdapterEventStreamError: Failed while streaming codex provider session provider-session:provider-instance:codex:shared events.
        at file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.ts:1851:15
        at file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/internal/effect.js:1396:96
        at orchestrationV2.providerTurnStart.start (file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/ProviderTurnStartService.ts:1347:15)
        at orchestrationV2.providerTurnStart.start (definition) (file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/ProviderTurnStartService.ts:232:26)
        at ProviderTurnStartService.start (file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/EffectWorker.ts:143:16)
        at ProviderTurnStartService.start (definition) (file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/ProviderTurnStartService.ts:1341:21)
        at serverActivation.forkParkedFiber (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:403:30)
        at serverActivation.forkParkedFiber (definition) (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverActivation.ts:12:39)
        at ServerRuntimeStartup.startEffectWorkerWithRelay (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:560:9)
        at ServerRuntimeStartup.startEffectWorkerWithRelay (definition) (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:396:50)
        at server.startup.orchestration-v2.effect-worker.start (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:387:12)
        at serverRuntimeStartup.runOrderedV2StartupPhases (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:542:62) {
      [cause]: CodexAppServerProcessExitedError: Codex App Server process exited with code 17
          at Object.onSuccess (file:///home/ubuntu/wt/pr-22791/packages/effect-codex-app-server/src/_internal/stdio.ts:62:26)
    }|2026-10-22T13:41:24.329Z
  [log grep R4a] read-process-exit-status=2 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=2 unexpectedly=0 WARN=6 ERROR=0 | trace: writeReleasedSessionEvents=2 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=2 TurnStartError=0
  [wait mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7] after 0.6s: {"threadId":"mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7","runId":"run:thread:mcp%3A62cc58bd-4b4b-434b-ade8-8e24dc12b0c7:ordinal:3","status":"completed","timedOut":false}
  (mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7)   [run] 3 completed started=2026-10-22T13:41:29.795Z completed=2026-10-22T13:41:30.215Z
  (mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7)   [run] 2 failed started=2026-10-22T13:41:23.876Z completed=2026-10-22T13:41:24.336Z
  (mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7)   [run] 1 completed started=2026-10-22T13:41:18.714Z completed=2026-10-22T13:41:19.107Z
  (mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7)   [error item run=2] The provider event stream closed unexpectedly. Retry the turn; if it keeps failing, check the provider and server logs.
  app-server pids now: 1974968 
  [new server log lines matching keys since mark 232]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:41:29.714Z
  [log grep R4a-next] read-process-exit-status=2 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=2 unexpectedly=0 WARN=6 ERROR=0 | trace: writeReleasedSessionEvents=2 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=2 TurnStartError=0
  -- R4b idle: SIGUSR1 to app-server -> stand-in calls process.exit(17) while no turn runs
  app-server pids before idle exit: 1974968 
  [ps] children of server 1971878:
        PID    PPID ELAPSED COMMAND
  [new server log lines matching keys since mark 232]
  [wait mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7] after 0.4s: {"threadId":"mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7","runId":"run:thread:mcp%3A62cc58bd-4b4b-434b-ade8-8e24dc12b0c7:ordinal:4","status":"completed","timedOut":false}
  (mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7)   [run] 4 completed started=2026-10-22T13:41:39.743Z completed=2026-10-22T13:41:39.999Z
  (mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7)   [run] 3 completed started=2026-10-22T13:41:29.795Z completed=2026-10-22T13:41:30.215Z
  (mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7)   [run] 2 failed started=2026-10-22T13:41:23.876Z completed=2026-10-22T13:41:24.336Z
  (mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7)   [run] 1 completed started=2026-10-22T13:41:18.714Z completed=2026-10-22T13:41:19.107Z
  (mcp:62cc58bd-4b4b-434b-ade8-8e24dc12b0c7)   [error item run=2] The provider event stream closed unexpectedly. Retry the turn; if it keeps failing, check the provider and server logs.
  app-server pids now: 1975188 
  [ps] children of server 1971878:
        PID    PPID ELAPSED COMMAND
    1975188 1971878       0 /home/ubuntu/.local/share/vite-plus/js_runtime/node/26.12.1/bin/node /tmp/ev-22791/driver/standin-app-server.mjs app-server
  [new server log lines matching keys since mark 232]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:41:39.649Z
  [log grep R4b] read-process-exit-status=2 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=2 unexpectedly=0 WARN=6 ERROR=0 | trace: writeReleasedSessionEvents=3 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=2 TurnStartError=0
=== side=after checkout=/home/ubuntu/wt/pr-22791 HEAD=1afd783c5e4ee4764ccc24bbe1649d25be539cee server_pid=1971878 (STAND-IN codex app-server) ===
====================================================================================================
ROW R5
====================================================================================================
--- BEFORE (R5) ---
BEFORE note: R5b is moot on main. After the R5a kill no app-server exists (the 'kill -9' line has an empty target), and T1 stays wedged.
=== side=before-r5 checkout=/tmp/ev-22791/base HEAD=ed3f965e0768f9a77729a17c5145a90ff3ab6210 server_pid=1979427 (STAND-IN codex app-server) ===

##### R5 two threads sharing one app-server (before-r5) #####
  [wait mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f] after 1.3s: {"threadId":"mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f","runId":"run:thread:mcp%3Ac0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f:ordinal:1","status":"completed","timedOut":false}
  [wait mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece] after 0.7s: {"threadId":"mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece","runId":"run:thread:mcp%3Aa265e21a-2827-4fb4-b4bd-dd914d490ece:ordinal:1","status":"completed","timedOut":false}
  T1=mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece T2=mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f
  [ps] children of server 1979427:
        PID    PPID ELAPSED COMMAND
    1980780 1979427      14 /home/ubuntu/.local/share/vite-plus/js_runtime/node/26.12.1/bin/node /tmp/ev-22791/driver/standin-app-server.mjs app-server
  shared app-server pid(s) A=1980780 
  13:45:50.049272253 kill -9 1980780  (T1 running, T2 idle)
  [wait mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece] after 70.1s: {"threadId":"mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece","runId":"run:thread:mcp%3Aa265e21a-2827-4fb4-b4bd-dd914d490ece:ordinal:2","status":"running","timedOut":true}
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 2 running started=2026-10-22T13:45:46.867Z completed=null
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 1 completed started=2026-10-22T13:45:41.853Z completed=2026-10-22T13:45:42.321Z
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [run] 1 completed started=2026-10-22T13:45:35.553Z completed=2026-10-22T13:45:36.297Z
  [new server log lines matching keys since mark 112]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:45:35.318Z
  [log grep R5a-kill] read-process-exit-status=0 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=0 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
  [wait mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece] after 30.1s: {"threadId":"mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece","runId":"run:thread:mcp%3Aa265e21a-2827-4fb4-b4bd-dd914d490ece:ordinal:3","status":"queued","timedOut":true}
  [wait mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f] after 0.1s: {"threadId":"mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f","runId":"run:thread:mcp%3Ac0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f:ordinal:2","status":"failed","timedOut":false}
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 3 queued started=null completed=null
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 2 running started=2026-10-22T13:45:46.867Z completed=null
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 1 completed started=2026-10-22T13:45:41.853Z completed=2026-10-22T13:45:42.321Z
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [run] 2 failed started=2026-10-22T13:47:39.815Z completed=2026-10-22T13:47:39.867Z
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [run] 1 completed started=2026-10-22T13:45:35.553Z completed=2026-10-22T13:45:36.297Z
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [error item run=2] The provider could not start this turn. Retry the turn; if it keeps failing, check the provider setup and server logs.
  [ps] children of server 1979427:
        PID    PPID ELAPSED COMMAND
  app-server pids now B=
  [new server log lines matching keys since mark 114]
    [13:47:39.863] ERROR (#8679): orchestration V2 provider turn start failed
        cause: 'ProviderAdapterTurnStartError: Failed to start run run:thread:mcp%3Ac0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f:ordinal:2 on codex provider thread provider-thread:provider:codex:native-thread:pending%3Arun%3Athread%3Amcp%253Ac0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f%3Aordinal%3A1.\n' +
          "  [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '    [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '        at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '        at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "      [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:45:35.318Z
  [log grep R5a-next] read-process-exit-status=1 ProviderAdapterTurnStartError=1 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=0 ERROR=1 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=3 TurnStartError=1
  [stand-in frames since kill]
    2026-10-22T13:45:51.096Z pid=1980913 <- turn/start id=6
    2026-10-22T13:46:02.703Z pid=1980913 <- thread/start id=8
    2026-10-22T13:46:03.075Z pid=1980913 <- turn/start id=9
  -- R5b both running at the kill
  [ps] children of server 1979427:
        PID    PPID ELAPSED COMMAND
  13:47:52.689209088 kill -9 
  [wait mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece] after 70.1s: {"threadId":"mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece","runId":"run:thread:mcp%3Aa265e21a-2827-4fb4-b4bd-dd914d490ece:ordinal:4","status":"queued","timedOut":true}
  [wait mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f] after 0.2s: {"threadId":"mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f","runId":"run:thread:mcp%3Ac0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f:ordinal:3","status":"failed","timedOut":false}
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 4 queued started=null completed=null
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 3 queued started=null completed=null
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 2 running started=2026-10-22T13:45:46.867Z completed=null
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 1 completed started=2026-10-22T13:45:41.853Z completed=2026-10-22T13:45:42.321Z
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [run] 3 failed started=2026-10-22T13:47:49.545Z completed=2026-10-22T13:47:49.721Z
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [run] 2 failed started=2026-10-22T13:47:39.815Z completed=2026-10-22T13:47:39.867Z
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [run] 1 completed started=2026-10-22T13:45:35.553Z completed=2026-10-22T13:45:36.297Z
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [error item run=2] The provider could not start this turn. Retry the turn; if it keeps failing, check the provider setup and server logs.
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [error item run=3] The provider could not start this turn. Retry the turn; if it keeps failing, check the provider setup and server logs.
  [new server log lines matching keys since mark 184]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:45:35.318Z
  [log grep R5b-kill] read-process-exit-status=2 ProviderAdapterTurnStartError=2 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=0 ERROR=2 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=8 TurnStartError=3
  [wait mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece] after 30.1s: {"threadId":"mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece","runId":"run:thread:mcp%3Aa265e21a-2827-4fb4-b4bd-dd914d490ece:ordinal:5","status":"queued","timedOut":true}
  [wait mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f] after 1.5s: {"threadId":"mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f","runId":"run:thread:mcp%3Ac0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f:ordinal:4","status":"failed","timedOut":false}
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 5 queued started=null completed=null
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 4 queued started=null completed=null
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 3 queued started=null completed=null
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 2 running started=2026-10-22T13:45:46.867Z completed=null
  (mcp:a265e21a-2827-4fb4-b4bd-dd914d490ece)   [run] 1 completed started=2026-10-22T13:45:41.853Z completed=2026-10-22T13:45:42.321Z
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [run] 4 failed started=null completed=2026-10-22T13:49:44.538Z
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [run] 3 failed started=2026-10-22T13:47:49.545Z completed=2026-10-22T13:47:49.721Z
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [run] 2 failed started=2026-10-22T13:47:39.815Z completed=2026-10-22T13:47:39.867Z
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [run] 1 completed started=2026-10-22T13:45:35.553Z completed=2026-10-22T13:45:36.297Z
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [error item run=2] The provider could not start this turn. Retry the turn; if it keeps failing, check the provider setup and server logs.
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [error item run=3] The provider could not start this turn. Retry the turn; if it keeps failing, check the provider setup and server logs.
  (mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f)   [error item run=4] Codex App Server transport operation 'read-process-exit-status' failed.
  app-server pids now: 
  [new server log lines matching keys since mark 184]
    [13:49:42.934] WARN (#9391): Provider resume failed; attempting a fresh native session
        errorTag: 'ProviderAdapterTurnStartError'
    [13:49:42.939] WARN (#7031): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:49:43.062] WARN (#9401): Provider resume failed; attempting a fresh native session
        errorTag: 'ProviderAdapterTurnStartError'
    [13:49:43.064] WARN (#7031): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:49:43.283] WARN (#9444): Provider resume failed; attempting a fresh native session
        errorTag: 'ProviderAdapterTurnStartError'
    [13:49:43.286] WARN (#7034): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:49:43.705] WARN (#9454): Provider resume failed; attempting a fresh native session
        errorTag: 'ProviderAdapterTurnStartError'
    [13:49:43.707] WARN (#7034): Orchestration effect execution failed
        error: 'OrchestrationEffectExecutionError: \n' +
          '  [cause]: ProviderTurnStartError: \n' +
          '    [cause]: ProviderAdapterEnsureThreadError: Failed to ensure codex provider thread for app thread mcp:c0cf2e0d-0fc6-4c4f-b460-c79427cd1d6f.\n' +
          "      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '            at Module.systemError (file:///tmp/ev-22791/base/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '            at toPlatformError (file:///tmp/ev-22791/base/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:49:44.536] WARN (#9464): Provider resume failed; attempting a fresh native session
        errorTag: 'ProviderAdapterTurnStartError'
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:45:35.318Z
  [log grep R5b-next] read-process-exit-status=6 ProviderAdapterTurnStartError=7 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=9 ERROR=2 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=25 TurnStartError=8

--- AFTER (R5) ---
=== side=after checkout=/home/ubuntu/wt/pr-22791 HEAD=1afd783c5e4ee4764ccc24bbe1649d25be539cee server_pid=1971878 (STAND-IN codex app-server) ===
##### R5 two threads sharing one app-server (after) #####
  [wait mcp:f13a4862-0739-4a4d-a983-56abf7287559] after 0.7s: {"threadId":"mcp:f13a4862-0739-4a4d-a983-56abf7287559","runId":"run:thread:mcp%3Af13a4862-0739-4a4d-a983-56abf7287559:ordinal:1","status":"completed","timedOut":false}
  [wait mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2] after 0.5s: {"threadId":"mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2","runId":"run:thread:mcp%3Ac6e2caea-4ba2-4194-b55d-82e3a81408b2:ordinal:1","status":"completed","timedOut":false}
  T1=mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2 T2=mcp:f13a4862-0739-4a4d-a983-56abf7287559
  [ps] children of server 1971878:
        PID    PPID ELAPSED COMMAND
    1975188 1971878      31 /home/ubuntu/.local/share/vite-plus/js_runtime/node/26.12.1/bin/node /tmp/ev-22791/driver/standin-app-server.mjs app-server
  shared app-server pid(s) A=1975188 
  13:42:11.291745271 kill -9 1975188  (T1 running, T2 idle)
  [wait mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2] after 0.2s: {"threadId":"mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2","runId":"run:thread:mcp%3Ac6e2caea-4ba2-4194-b55d-82e3a81408b2:ordinal:2","status":"failed","timedOut":false}
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 2 failed started=2026-10-22T13:42:08.129Z completed=2026-10-22T13:42:11.317Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 1 completed started=2026-10-22T13:42:03.282Z completed=2026-10-22T13:42:03.666Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [error item run=2] The provider event stream closed unexpectedly. Retry the turn; if it keeps failing, check the provider and server logs.
  (mcp:f13a4862-0739-4a4d-a983-56abf7287559)   [run] 1 completed started=2026-10-22T13:41:58.360Z completed=2026-10-22T13:41:58.839Z
  [new server log lines matching keys since mark 232]
    [13:42:11.317] WARN (#11382): orchestration V2 provider event ingestion failed
        cause: 'RunExecutionIngestError: Failed while ingesting orchestration V2 run execution run:thread:mcp%3Ac6e2caea-4ba2-4194-b55d-82e3a81408b2:ordinal:2.\n' +
          '  [cause]: ProviderAdapterEventStreamError: Failed while streaming codex provider session provider-session:provider-instance:codex:shared events.\n' +
          "    [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '      [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '          at Module.systemError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '          at toPlatformError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "        [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:42:11.320] WARN (#11382): orchestration V2 failed to interrupt turn after ingestion failure
        cause: 'ProviderAdapterInterruptError: Failed to interrupt codex provider turn provider-turn:provider:codex:native-turn:standin-turn-1975188-6.\n' +
          "  [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '    [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '        at Module.systemError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '        at toPlatformError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "      [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|error|ProviderAdapterEventStreamError: Failed while streaming codex provider session provider-session:provider-instance:codex:shared events.
        at file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.ts:1851:15
        at file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/internal/effect.js:1396:96
        at orchestrationV2.providerTurnStart.start (file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/ProviderTurnStartService.ts:1347:15)
        at orchestrationV2.providerTurnStart.start (definition) (file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/ProviderTurnStartService.ts:232:26)
        at ProviderTurnStartService.start (file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/EffectWorker.ts:143:16)
        at ProviderTurnStartService.start (definition) (file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/ProviderTurnStartService.ts:1341:21)
        at serverActivation.forkParkedFiber (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:403:30)
        at serverActivation.forkParkedFiber (definition) (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverActivation.ts:12:39)
        at ServerRuntimeStartup.startEffectWorkerWithRelay (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:560:9)
        at ServerRuntimeStartup.startEffectWorkerWithRelay (definition) (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:396:50)
        at server.startup.orchestration-v2.effect-worker.start (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:387:12)
        at serverRuntimeStartup.runOrderedV2StartupPhases (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:542:62) {
      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.
          at Object.onFailure (file:///home/ubuntu/wt/pr-22791/packages/effect-codex-app-server/src/_internal/stdio.ts:57:7) {
        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null
        : "${XDG_RUNTIME_DIR:=$1}"
        export XDG_RUNTIME_DIR
        shift
        exec "$@" t3-agent /run/user/1000 /usr/bin/systemd-run --user --scope --quiet --slice=app-t3code-agents-56d4871f9ee0.slice --unit=t3code-codex-15e25aa3.scope --property=TimeoutStopSec=10s --property=OOMPolicy=continue --collect -- /tmp/ev-22791/driver/codex-standin app-server)
            at Module.systemError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)
            at file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/internal/utils.js:28:24
            at toPlatformError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)
            at file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:465:32 {
          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'
              at file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:464:27
        }
      }
    }|2026-10-22T13:42:11.306Z
  [log grep R5a-kill] read-process-exit-status=4 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=3 unexpectedly=0 WARN=8 ERROR=0 | trace: writeReleasedSessionEvents=4 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=4 TurnStartError=0
  [wait mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2] after 0.6s: {"threadId":"mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2","runId":"run:thread:mcp%3Ac6e2caea-4ba2-4194-b55d-82e3a81408b2:ordinal:3","status":"completed","timedOut":false}
  [wait mcp:f13a4862-0739-4a4d-a983-56abf7287559] after 0.4s: {"threadId":"mcp:f13a4862-0739-4a4d-a983-56abf7287559","runId":"run:thread:mcp%3Af13a4862-0739-4a4d-a983-56abf7287559:ordinal:2","status":"completed","timedOut":false}
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 3 completed started=2026-10-22T13:42:16.701Z completed=2026-10-22T13:42:17.062Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 2 failed started=2026-10-22T13:42:08.129Z completed=2026-10-22T13:42:11.317Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 1 completed started=2026-10-22T13:42:03.282Z completed=2026-10-22T13:42:03.666Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [error item run=2] The provider event stream closed unexpectedly. Retry the turn; if it keeps failing, check the provider and server logs.
  (mcp:f13a4862-0739-4a4d-a983-56abf7287559)   [run] 2 completed started=2026-10-22T13:42:21.549Z completed=2026-10-22T13:42:21.799Z
  (mcp:f13a4862-0739-4a4d-a983-56abf7287559)   [run] 1 completed started=2026-10-22T13:41:58.360Z completed=2026-10-22T13:41:58.839Z
  [ps] children of server 1971878:
        PID    PPID ELAPSED COMMAND
    1975815 1971878       5 /home/ubuntu/.local/share/vite-plus/js_runtime/node/26.12.1/bin/node /tmp/ev-22791/driver/standin-app-server.mjs app-server
  app-server pids now B=1975815 
  [new server log lines matching keys since mark 302]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:42:16.619Z
  [log grep R5a-next] read-process-exit-status=4 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=3 unexpectedly=0 WARN=8 ERROR=0 | trace: writeReleasedSessionEvents=4 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=4 TurnStartError=0
  [stand-in frames since kill]
    2026-10-22T13:42:16.693Z pid=1975815 <- initialize id=1
    2026-10-22T13:42:16.696Z pid=1975815 <- thread/resume id=2
    2026-10-22T13:42:16.829Z pid=1975815 <- turn/start id=3
    2026-10-22T13:42:21.545Z pid=1975815 <- thread/resume id=4
    2026-10-22T13:42:21.581Z pid=1975815 <- turn/start id=5
  -- R5b both running at the kill
  [ps] children of server 1971878:
        PID    PPID ELAPSED COMMAND
    1975815 1971878      17 /home/ubuntu/.local/share/vite-plus/js_runtime/node/26.12.1/bin/node /tmp/ev-22791/driver/standin-app-server.mjs app-server
  13:42:34.424254655 kill -9 1975815 
  [wait mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2] after 0.1s: {"threadId":"mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2","runId":"run:thread:mcp%3Ac6e2caea-4ba2-4194-b55d-82e3a81408b2:ordinal:4","status":"failed","timedOut":false}
  [wait mcp:f13a4862-0739-4a4d-a983-56abf7287559] after 0.1s: {"threadId":"mcp:f13a4862-0739-4a4d-a983-56abf7287559","runId":"run:thread:mcp%3Af13a4862-0739-4a4d-a983-56abf7287559:ordinal:3","status":"failed","timedOut":false}
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 4 failed started=2026-10-22T13:42:26.996Z completed=2026-10-22T13:42:34.442Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 3 completed started=2026-10-22T13:42:16.701Z completed=2026-10-22T13:42:17.062Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 2 failed started=2026-10-22T13:42:08.129Z completed=2026-10-22T13:42:11.317Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 1 completed started=2026-10-22T13:42:03.282Z completed=2026-10-22T13:42:03.666Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [error item run=2] The provider event stream closed unexpectedly. Retry the turn; if it keeps failing, check the provider and server logs.
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [error item run=4] The provider event stream closed unexpectedly. Retry the turn; if it keeps failing, check the provider and server logs.
  (mcp:f13a4862-0739-4a4d-a983-56abf7287559)   [run] 3 failed started=2026-10-22T13:42:31.270Z completed=2026-10-22T13:42:34.445Z
  (mcp:f13a4862-0739-4a4d-a983-56abf7287559)   [run] 2 completed started=2026-10-22T13:42:21.549Z completed=2026-10-22T13:42:21.799Z
  (mcp:f13a4862-0739-4a4d-a983-56abf7287559)   [run] 1 completed started=2026-10-22T13:41:58.360Z completed=2026-10-22T13:41:58.839Z
  (mcp:f13a4862-0739-4a4d-a983-56abf7287559)   [error item run=3] The provider event stream closed unexpectedly. Retry the turn; if it keeps failing, check the provider and server logs.
  [new server log lines matching keys since mark 302]
    [13:42:34.442] WARN (#12101): orchestration V2 provider event ingestion failed
        cause: 'RunExecutionIngestError: Failed while ingesting orchestration V2 run execution run:thread:mcp%3Ac6e2caea-4ba2-4194-b55d-82e3a81408b2:ordinal:4.\n' +
          '  [cause]: ProviderAdapterEventStreamError: Failed while streaming codex provider session provider-session:provider-instance:codex:shared events.\n' +
          "    [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '      [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '          at Module.systemError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '          at toPlatformError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "        [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:42:34.444] WARN (#12101): orchestration V2 failed to interrupt turn after ingestion failure
        cause: 'ProviderAdapterInterruptError: Failed to interrupt codex provider turn provider-turn:provider:codex:native-turn:standin-turn-1975815-3.\n' +
          "  [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '    [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '        at Module.systemError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '        at toPlatformError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "      [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:42:34.445] WARN (#12155): orchestration V2 provider event ingestion failed
        cause: 'RunExecutionIngestError: Failed while ingesting orchestration V2 run execution run:thread:mcp%3Af13a4862-0739-4a4d-a983-56abf7287559:ordinal:3.\n' +
          '  [cause]: ProviderAdapterEventStreamError: Failed while streaming codex provider session provider-session:provider-instance:codex:shared events.\n' +
          "    [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '      [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '          at Module.systemError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '          at toPlatformError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "        [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
    [13:42:34.447] WARN (#12155): orchestration V2 failed to interrupt turn after ingestion failure
        cause: 'ProviderAdapterInterruptError: Failed to interrupt codex provider turn provider-turn:provider:codex:native-turn:standin-turn-1975815-4.\n' +
          "  [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.\n" +
          '    [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null\n' +
          '        at Module.systemError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)\n' +
          '        at toPlatformError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)\n' +
          "      [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'\n" +
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|error|ProviderAdapterEventStreamError: Failed while streaming codex provider session provider-session:provider-instance:codex:shared events.
        at file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.ts:1851:15
        at file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/internal/effect.js:1396:96
        at orchestrationV2.providerTurnStart.start (file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/ProviderTurnStartService.ts:1347:15)
        at orchestrationV2.providerTurnStart.start (definition) (file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/ProviderTurnStartService.ts:232:26)
        at ProviderTurnStartService.start (file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/EffectWorker.ts:143:16)
        at ProviderTurnStartService.start (definition) (file:///home/ubuntu/wt/pr-22791/apps/server/src/orchestration-v2/ProviderTurnStartService.ts:1341:21)
        at serverActivation.forkParkedFiber (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:403:30)
        at serverActivation.forkParkedFiber (definition) (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverActivation.ts:12:39)
        at ServerRuntimeStartup.startEffectWorkerWithRelay (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:560:9)
        at ServerRuntimeStartup.startEffectWorkerWithRelay (definition) (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:396:50)
        at server.startup.orchestration-v2.effect-worker.start (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:387:12)
        at serverRuntimeStartup.runOrderedV2StartupPhases (file:///home/ubuntu/wt/pr-22791/apps/server/src/serverRuntimeStartup.ts:542:62) {
      [cause]: CodexAppServerTransportError: Codex App Server transport operation 'read-process-exit-status' failed.
          at Object.onFailure (file:///home/ubuntu/wt/pr-22791/packages/effect-codex-app-server/src/_internal/stdio.ts:57:7) {
        [cause]: PlatformError: Unknown: ChildProcess.exitCode (/bin/sh -c { echo 800 >/proc/self/oom_score_adj; } 2>/dev/null
        : "${XDG_RUNTIME_DIR:=$1}"
        export XDG_RUNTIME_DIR
        shift
        exec "$@" t3-agent /run/user/1000 /usr/bin/systemd-run --user --scope --quiet --slice=app-t3code-agents-56d4871f9ee0.slice --unit=t3code-codex-d73bad29.scope --property=TimeoutStopSec=10s --property=OOMPolicy=continue --collect -- /tmp/ev-22791/driver/codex-standin app-server)
            at Module.systemError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/PlatformError.js:177:39)
            at file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/internal/utils.js:28:24
            at toPlatformError (file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:28:54)
            at file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:465:32 {
          [cause]: Error: Process interrupted due to receipt of signal: 'SIGKILL'
              at file:///home/ubuntu/wt/pr-22791/node_modules/.pnpm/@effect+platform-node-shared@4.0.5_bufferutil@4.1.0_effect@4.0.5_utf-8-validate@6.0.6/node_modules/@effect/platform-node-shared/dist/NodeChildProcessSpawner.js:464:27
        }
      }
    }|2026-10-22T13:42:34.435Z
  [log grep R5b-kill] read-process-exit-status=8 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=5 unexpectedly=0 WARN=12 ERROR=0 | trace: writeReleasedSessionEvents=5 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=8 TurnStartError=0
  [wait mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2] after 0.7s: {"threadId":"mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2","runId":"run:thread:mcp%3Ac6e2caea-4ba2-4194-b55d-82e3a81408b2:ordinal:5","status":"completed","timedOut":false}
  [wait mcp:f13a4862-0739-4a4d-a983-56abf7287559] after 0.5s: {"threadId":"mcp:f13a4862-0739-4a4d-a983-56abf7287559","runId":"run:thread:mcp%3Af13a4862-0739-4a4d-a983-56abf7287559:ordinal:4","status":"completed","timedOut":false}
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 5 completed started=2026-10-22T13:42:40.029Z completed=2026-10-22T13:42:40.410Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 4 failed started=2026-10-22T13:42:26.996Z completed=2026-10-22T13:42:34.442Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 3 completed started=2026-10-22T13:42:16.701Z completed=2026-10-22T13:42:17.062Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 2 failed started=2026-10-22T13:42:08.129Z completed=2026-10-22T13:42:11.317Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [run] 1 completed started=2026-10-22T13:42:03.282Z completed=2026-10-22T13:42:03.666Z
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [error item run=2] The provider event stream closed unexpectedly. Retry the turn; if it keeps failing, check the provider and server logs.
  (mcp:c6e2caea-4ba2-4194-b55d-82e3a81408b2)   [error item run=4] The provider event stream closed unexpectedly. Retry the turn; if it keeps failing, check the provider and server logs.
  (mcp:f13a4862-0739-4a4d-a983-56abf7287559)   [run] 4 completed started=2026-10-22T13:42:45.234Z completed=2026-10-22T13:42:45.594Z
  (mcp:f13a4862-0739-4a4d-a983-56abf7287559)   [run] 3 failed started=2026-10-22T13:42:31.270Z completed=2026-10-22T13:42:34.445Z
  (mcp:f13a4862-0739-4a4d-a983-56abf7287559)   [run] 2 completed started=2026-10-22T13:42:21.549Z completed=2026-10-22T13:42:21.799Z
  (mcp:f13a4862-0739-4a4d-a983-56abf7287559)   [run] 1 completed started=2026-10-22T13:41:58.360Z completed=2026-10-22T13:41:58.839Z
  (mcp:f13a4862-0739-4a4d-a983-56abf7287559)   [error item run=3] The provider event stream closed unexpectedly. Retry the turn; if it keeps failing, check the provider and server logs.
  app-server pids now: 1976466 
  [new server log lines matching keys since mark 442]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:42:39.931Z
  [log grep R5b-next] read-process-exit-status=8 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=5 unexpectedly=0 WARN=12 ERROR=0 | trace: writeReleasedSessionEvents=5 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=8 TurnStartError=0
=== side=after checkout=/home/ubuntu/wt/pr-22791 HEAD=1afd783c5e4ee4764ccc24bbe1649d25be539cee server_pid=1971878 (STAND-IN codex app-server) ===
====================================================================================================
ROW R6
====================================================================================================
--- BEFORE (R6) ---

=== side=before-r6 checkout=/tmp/ev-22791/base HEAD=ed3f965e0768f9a77729a17c5145a90ff3ab6210 server_pid=1979405 (STAND-IN codex app-server) ===

##### R6 normal close gives no false failure (before-r6) #####
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
  [log grep R6-start] read-process-exit-status=0 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=0 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
  [wait mcp:8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b] after 1.0s: {"threadId":"mcp:8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b","runId":"run:thread:mcp%3A8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b:ordinal:1","status":"completed","timedOut":false}
  -- R6a interrupt: {"threadId":"mcp:8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b","runId":"run:thread:mcp%3A8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b:ordinal:2","status":"interrupt_requested"}
  [wait mcp:8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b] after 0.2s: {"threadId":"mcp:8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b","runId":"run:thread:mcp%3A8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b:ordinal:2","status":"interrupted","timedOut":false}
  (mcp:8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b)   [run] 2 interrupted started=2026-10-22T13:45:42.567Z completed=2026-10-22T13:45:45.853Z
  (mcp:8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b)   [run] 1 completed started=2026-10-22T13:45:36.402Z completed=2026-10-22T13:45:36.994Z
  [new server log lines matching keys since mark 112]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:45:36.317Z
  [log grep R6a] read-process-exit-status=0 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=0 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
  [wait mcp:8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b] after 0.4s: {"threadId":"mcp:8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b","runId":"run:thread:mcp%3A8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b:ordinal:3","status":"completed","timedOut":false}
  (mcp:8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b)   [run] 3 completed started=2026-10-22T13:45:51.054Z completed=2026-10-22T13:45:51.315Z
  (mcp:8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b)   [run] 2 interrupted started=2026-10-22T13:45:42.567Z completed=2026-10-22T13:45:45.853Z
  (mcp:8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b)   [run] 1 completed started=2026-10-22T13:45:36.402Z completed=2026-10-22T13:45:36.994Z
  app-server pids: 1980913 
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:45:36.317Z
  [log grep R6a-next] read-process-exit-status=0 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=0 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
  -- R6b archive thread (normal session close)
  {"sequence":79}
  [ps] children of server 1979405:
        PID    PPID ELAPSED COMMAND
    1980913 1979405      21 /home/ubuntu/.local/share/vite-plus/js_runtime/node/26.12.1/bin/node /tmp/ev-22791/driver/standin-app-server.mjs app-server
  [new server log lines matching keys since mark 112]
    [13:45:52.667] WARN (#8366): orchestration-v2.driver-session.detach-unload-failed
        cause: 'ProviderAdapterProtocolError: codex provider protocol error: Failed to unload Codex thread for provider thread provider-thread:provider:codex:native-thread:pending%3Arun%3Athread%3Amcp%253A8d241ffa-b34e-4ca5-bdc0-49c4ee6ce60b%3Aordinal%3A1.\n' +
          "  [cause]: CodexAppServerRequestError: Invalid payload for method 'thread/unsubscribe' during 'decode-payload'\n" +
          '      at CodexAppServerRequestError.invalidPayload (file:///tmp/ev-22791/base/packages/effect-codex-app-server/src/errors.ts:361:12)\n' +
          '    [cause]: SchemaError: Missing key\n' +
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:45:36.317Z
  [log grep R6b] read-process-exit-status=0 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=1 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
  [wait mcp:794525e2-94f5-4398-a04b-101d35b51332] after 0.8s: {"threadId":"mcp:794525e2-94f5-4398-a04b-101d35b51332","runId":"run:thread:mcp%3A794525e2-94f5-4398-a04b-101d35b51332:ordinal:1","status":"completed","timedOut":false}
  (mcp:794525e2-94f5-4398-a04b-101d35b51332)   [run] 1 completed started=2026-10-22T13:46:02.707Z completed=2026-10-22T13:46:03.300Z
  app-server pids: 1980913 
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:45:36.317Z
  [log grep R6b-next] read-process-exit-status=0 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=1 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
  -- R6c SIGTERM server 1979405
  server 1979405 exited after ~2s
  [new server log lines matching keys since mark 139]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|stopped||2026-10-22T13:46:04.463Z
  [log grep R6c] read-process-exit-status=0 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=0 unexpectedly=0 WARN=1 ERROR=0 | trace: writeReleasedSessionEvents=1 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
  stand-in processes still alive from this server: 

--- AFTER (R6) ---
=== side=after checkout=/home/ubuntu/wt/pr-22791 HEAD=1afd783c5e4ee4764ccc24bbe1649d25be539cee server_pid=1971878 (STAND-IN codex app-server) ===
##### R6 normal close gives no false failure (after) #####
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:42:39.931Z
  [log grep R6-start] read-process-exit-status=8 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=5 unexpectedly=0 WARN=12 ERROR=0 | trace: writeReleasedSessionEvents=5 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=8 TurnStartError=0
  [wait mcp:38f1cd2d-ba07-4ef7-8be2-c641e19168ca] after 0.6s: {"threadId":"mcp:38f1cd2d-ba07-4ef7-8be2-c641e19168ca","runId":"run:thread:mcp%3A38f1cd2d-ba07-4ef7-8be2-c641e19168ca:ordinal:1","status":"completed","timedOut":false}
  -- R6a interrupt: {"threadId":"mcp:38f1cd2d-ba07-4ef7-8be2-c641e19168ca","runId":"run:thread:mcp%3A38f1cd2d-ba07-4ef7-8be2-c641e19168ca:ordinal:2","status":"interrupt_requested"}
  [wait mcp:38f1cd2d-ba07-4ef7-8be2-c641e19168ca] after 0.1s: {"threadId":"mcp:38f1cd2d-ba07-4ef7-8be2-c641e19168ca","runId":"run:thread:mcp%3A38f1cd2d-ba07-4ef7-8be2-c641e19168ca:ordinal:2","status":"interrupted","timedOut":false}
  (mcp:38f1cd2d-ba07-4ef7-8be2-c641e19168ca)   [run] 2 interrupted started=2026-10-22T13:43:34.529Z completed=2026-10-22T13:43:37.777Z
  (mcp:38f1cd2d-ba07-4ef7-8be2-c641e19168ca)   [run] 1 completed started=2026-10-22T13:43:29.627Z completed=2026-10-22T13:43:30.082Z
  [new server log lines matching keys since mark 442]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:42:39.931Z
  [log grep R6a] read-process-exit-status=8 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=5 unexpectedly=0 WARN=12 ERROR=0 | trace: writeReleasedSessionEvents=5 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=8 TurnStartError=0
  [wait mcp:38f1cd2d-ba07-4ef7-8be2-c641e19168ca] after 0.3s: {"threadId":"mcp:38f1cd2d-ba07-4ef7-8be2-c641e19168ca","runId":"run:thread:mcp%3A38f1cd2d-ba07-4ef7-8be2-c641e19168ca:ordinal:3","status":"completed","timedOut":false}
  (mcp:38f1cd2d-ba07-4ef7-8be2-c641e19168ca)   [run] 3 completed started=2026-10-22T13:43:42.755Z completed=2026-10-22T13:43:43.009Z
  (mcp:38f1cd2d-ba07-4ef7-8be2-c641e19168ca)   [run] 2 interrupted started=2026-10-22T13:43:34.529Z completed=2026-10-22T13:43:37.777Z
  (mcp:38f1cd2d-ba07-4ef7-8be2-c641e19168ca)   [run] 1 completed started=2026-10-22T13:43:29.627Z completed=2026-10-22T13:43:30.082Z
  app-server pids: 1976466 
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:42:39.931Z
  [log grep R6a-next] read-process-exit-status=8 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=5 unexpectedly=0 WARN=12 ERROR=0 | trace: writeReleasedSessionEvents=5 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=8 TurnStartError=0
  -- R6b archive thread (normal session close)
  {"sequence":505}
  [ps] children of server 1971878:
        PID    PPID ELAPSED COMMAND
    1976466 1971878      69 /home/ubuntu/.local/share/vite-plus/js_runtime/node/26.12.1/bin/node /tmp/ev-22791/driver/standin-app-server.mjs app-server
  [new server log lines matching keys since mark 442]
    [13:43:44.132] WARN (#13941): orchestration-v2.driver-session.detach-unload-failed
        cause: 'ProviderAdapterProtocolError: codex provider protocol error: Failed to unload Codex thread for provider thread provider-thread:provider:codex:native-thread:pending%3Arun%3Athread%3Amcp%253A38f1cd2d-ba07-4ef7-8be2-c641e19168ca%3Aordinal%3A1.\n' +
          "  [cause]: CodexAppServerRequestError: Invalid payload for method 'thread/unsubscribe' during 'decode-payload'\n" +
          '      at CodexAppServerRequestError.invalidPayload (file:///home/ubuntu/wt/pr-22791/packages/effect-codex-app-server/src/errors.ts:361:12)\n' +
          '    [cause]: SchemaError: Missing key\n' +
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:42:39.931Z
  [log grep R6b] read-process-exit-status=8 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=5 unexpectedly=0 WARN=13 ERROR=0 | trace: writeReleasedSessionEvents=5 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=8 TurnStartError=0
  [wait mcp:d8ebcf86-b4a3-44da-bd48-d8db0385351b] after 0.6s: {"threadId":"mcp:d8ebcf86-b4a3-44da-bd48-d8db0385351b","runId":"run:thread:mcp%3Ad8ebcf86-b4a3-44da-bd48-d8db0385351b:ordinal:1","status":"completed","timedOut":false}
  (mcp:d8ebcf86-b4a3-44da-bd48-d8db0385351b)   [run] 1 completed started=2026-10-22T13:43:53.982Z completed=2026-10-22T13:43:54.454Z
  app-server pids: 1976466 
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|ready||2026-10-22T13:42:39.931Z
  [log grep R6b-next] read-process-exit-status=8 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=5 unexpectedly=0 WARN=13 ERROR=0 | trace: writeReleasedSessionEvents=0 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
  -- R6c SIGTERM server 1971878
  server 1971878 exited after ~2s
  [new server log lines matching keys since mark 469]
  [provider session projection: status(runtime_error=>error, other release=>stopped) | lastError]
    provider-session:provider-instance:codex:shared|stopped||2026-10-22T13:43:55.449Z
  [log grep R6c] read-process-exit-status=8 ProviderAdapterTurnStartError=0 ProviderAdapterEventStreamError=5 unexpectedly=0 WARN=13 ERROR=0 | trace: writeReleasedSessionEvents=1 runtime_error=0 manual_shutdown=0 idle_timeout=0 server_shutdown=0 EventStreamError=0 read-process-exit-status=0 TurnStartError=0
  stand-in processes still alive from this server: 
Within-row WARN/ERROR deltas: AFTER +1 WARN / +0 ERROR, BEFORE +1 WARN / +0 ERROR. Both WARNs are the same STAND-IN artifact: thread/unsubscribe answered with {} fails decoding.
====================================================================================================
STAND-IN pid log
2026-10-22T13:35:58.559Z STAND-IN pid=1972186 ppid=1971878 argv=["app-server"]
2026-10-22T13:36:19.660Z STAND-IN pid=1972592 ppid=1971878 argv=["app-server"]
2026-10-22T13:39:54.489Z STAND-IN pid=1973731 ppid=1973378 argv=["app-server"]
2026-10-22T13:40:12.185Z STAND-IN pid=1974071 ppid=1971878 argv=["app-server"]
2026-10-22T13:41:19.020Z STAND-IN pid=1974589 ppid=1973378 argv=["app-server"]
2026-10-22T13:41:29.782Z STAND-IN pid=1974968 ppid=1971878 argv=["app-server"]
2026-10-22T13:41:39.732Z STAND-IN pid=1975188 ppid=1971878 argv=["app-server"]
2026-10-22T13:42:16.689Z STAND-IN pid=1975815 ppid=1971878 argv=["app-server"]
2026-10-22T13:42:40.018Z STAND-IN pid=1976466 ppid=1971878 argv=["app-server"]
2026-10-22T13:45:15.269Z STAND-IN pid=1980320 ppid=1979427 argv=["app-server"]
2026-10-22T13:45:15.302Z STAND-IN pid=1980327 ppid=1979405 argv=["app-server"]
2026-10-22T13:45:15.397Z STAND-IN pid=1980364 ppid=1979406 argv=["app-server"]
2026-10-22T13:45:35.489Z STAND-IN pid=1980780 ppid=1979427 argv=["app-server"]
2026-10-22T13:45:35.628Z STAND-IN pid=1980821 ppid=1979406 argv=["app-server"]
2026-10-22T13:45:36.389Z STAND-IN pid=1980913 ppid=1979405 argv=["app-server"]
2026-10-22T13:50:15.865Z STAND-IN pid=1983721 ppid=1983416 argv=["app-server"]
2026-10-22T13:50:34.513Z STAND-IN pid=1983861 ppid=1983416 argv=["app-server"]