Current final local head: beb763dc828452049082d1d6e8544284e08355bf
Earlier stages carry their own revisions. Final rollback proof and parent replay below match current code.
Final local head: 06396c7a5f44b595dc2d6d207dbc1eb3ca98336a
Earlier stages below are labeled with their own heads; final stage and replay match current code.

--- 20048-fix-proof.txt ---
Target: PR #20048 https://github.com/pingdotgg/t3code/pull/20048
Head repository: pingdotgg/t3code
Branch: t3/fix-codex-computer-use-cleanup
Base: main
Original head: 3c428137055ef4a8bdc6a348f608705625782313
Starting local HEAD: d322cda5485e3c6823e965896e5bb3aa269e54f4
Worktree: /home/ubuntu/wt/codex-04

Implementation: hasPendingBackgroundWorkForThread now walks each active/settled context and its provider-thread ancestry instead of deriving lineage roots only from active/settled contexts. A failed root therefore retains its live descendant guard after root context removal.
No unload-selection changes, no thread-closed cleanup, no new helper or abstraction.
The existing failed-root/live-child test now asserts pending work before and after child completion, using Deferred terminal/completion milestones instead of awaitUntil polling. The existing virtual-clock replay delay is unchanged.
Unload implementation and three subtree unload cases compared byte-for-byte against starting HEAD and unchanged.

Red: existing failed-root/live-child test with new assertions, before production fix: exit 1, expected false to be true at pending-work assertion (20048-fix-red.log).
Green: same test with production fix: exit 0, 1 passed / 171 skipped (20048-fix-green.log).
Full focused adapter suite: exit 0, 172 passed (20048-fix-tests.log).
Targeted lint, both changed files: exit 0, two existing unused-variable warnings on untouched lines (20048-fix-lint.log).
Targeted fmt --check, both changed files: exit 0 (20048-fix-fmt.log).
Server typecheck: ./node_modules/.bin/tsc-rs --noEmit -p apps/server/tsconfig.json: exit 0, no TypeScript errors; Effect suggestions only (20048-fix-typecheck.log).
Pre-typecheck uptime/load checked; 1-minute load 2.72 < 8 (20048-fix-load.log).
git diff --check: exit 0 (20048-fix-diff-check.log).

No push, GitHub mutations, browsers, other worktree changes, or nested agents.

Final local commit: bf37991d5a3a95e0b1867bcae85593912f9753db
Final git status --short: ''

--- 20048-ownership-proof.txt ---
Target: PR #20048 https://github.com/pingdotgg/t3code/pull/20048
Head repository/branch: pingdotgg/t3code t3/fix-codex-computer-use-cleanup
Base: main
Original PR head: 3c428137055ef4a8bdc6a348f608705625782313
Starting local head: bf37991d5a3a95e0b1867bcae85593912f9753db
Final local commit: 4e428e1b308d35a51bd3761761e00f6de98c0f71
Worktree: /home/ubuntu/wt/codex-04

Source verification:
- ProviderSessionManager.decorateRuntime.ensureThread and resumeThread mark successful app loads in loadedProviderThreadKeyByThread. A native subagent explicitly resumed as an app thread therefore gets independent loaded state.
- The manager checks busy turns and clears loaded state per app thread on idle unload; it cannot account for sibling app-thread subscriptions removed by the adapter ancestor walk.
- Native subagent registration retains original parentContext ancestry even when that native child is independently resumed. Independently started user turns have their own root context; the existing ancestor pending-work guard is not ownership tracking.
- ensureThread starts a new native thread; resumeThread can load an existing native child. Both successful paths now record the returned native ID as app-owned. Native thread/fork returns a new native ID outside the source subagent registry, so it has no overlapping registered ancestry to protect on this path.

Implementation:
- Track app-owned native IDs in the existing session scope. Remove the target on its own unload, matching the manager dropping its loaded state even if unsubscribe fails.
- Skip app-owned child candidates and stop ancestry traversal at app-owned intermediate threads. Their descendants remain subscribed until that child unloads itself.
- Preserve unowned descendant cleanup, child-only cleanup, all unsubscribe attempts and first-error reporting.
- Existing pending-work guard and failed-root/live-child regression from bf37991d5a preserved byte-for-byte (20048-ownership-preserved.log).
- Only two existing adapter files changed. No thread/closed cleanup or shared app-server restart changes.

Regression:
- One row added to the existing unload table: explicitly resume the child; unload parent; assert only root and unowned sibling unsubscribed; unload child itself; assert child and grandchild then unsubscribed.
- Uses existing replay harness metadata callback for child reads/resume, with required updatedAt metadata. No new test file or polling.
- Before production fix: 1 failed / 3 passed / 169 skipped; assertion shows parent wrongly unsubscribing child and grandchild (20048-ownership-red.log).
- After fix, same focused table: 4 passed / 169 skipped (20048-ownership-green.log).
- Full adapter suite: 173 passed, up from 172 (20048-ownership-tests.log).

Checks (all exit 0):
- ./node_modules/.bin/vp test run apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.test.ts
- ./node_modules/.bin/vp lint --report-unused-disable-directives apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.ts apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.test.ts
  Two pre-existing unused-variable warnings on untouched lines.
- ./node_modules/.bin/vp fmt --check apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.ts apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.test.ts
- ./node_modules/.bin/tsc-rs --noEmit --project apps/server/tsconfig.json
  No TypeScript errors; existing Effect suggestions only. Uptime/load checked before launch: 1-minute load 0.47 <= 8.
- git diff --check

Scope: local code and commit only; no push, GitHub mutations, browser, live Mac proof, other worktree edits, nested agents, or broad checks. PR registered in this T3 thread as required by runtime.
Live macOS cursor disappearance and native MCP process teardown remain unverified on this Linux host. Fresh independent full-diff Opus and Sol review rounds are for the parent to run next.
Final git status --short: ''

--- 20048-r2-fix-proof.txt ---
Round 2 local implementation proof
Date: 2026-10-19 UTC
Worktree: /home/ubuntu/wt/codex-04
Target: [#20048](https://github.com/pingdotgg/t3code/pull/20048)
Head repository: [pingdotgg/t3code](https://github.com/pingdotgg/t3code)
Branch: t3/fix-codex-computer-use-cleanup
Review base: 1451e7cb23
Original PR head: 3c428137055ef4a8bdc6a348f608705625782313
Local starting head: 4e428e1b308d35a51bd3761761e00f6de98c0f71
Local result commit (unpublished): 06396c7a5f44b595dc2d6d207dbc1eb3ca98336a
Working tree after commit: clean
Scope: two existing Codex adapter files; no thread/closed changes, push,
GitHub content mutation, nested agents, browser, or live state changes.

Implementation
- The per-thread pending-work probe stops at independently app-owned children.
  Matching the target happens first, so the child's own active work is retained.
- Subtree eligibility is evaluated immediately before each unsubscribe, including
  every registered ancestor ownership boundary. A successful child resume while
  an earlier unsubscribe is pending protects that child and its descendants.
- Root remains first, all eligible unsubscribes are attempted after typed failures,
  and the first failure is reported. Approvals are cleared for the threads
  actually being unsubscribed. The shared app-server process remains alive.
- The existing resumed-child replay case was extended, not multiplied. It checks
  root=true before ownership transfer, root=false and child=true afterward,
  root/sibling unsubscribe only, then independent child/grandchild unloading.
  Two Deferred gates coordinate the interleaving; no new sleeps or polling.
- Existing failed-root/live-child coverage and the other three table cases remain.

Red proof before production fix
Command:
  pnpm exec vp test run apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.test.ts -t 'unloads only the native subagent subtree'
Starting production code unchanged; only the existing test extended.
Result: exit 1; 1 failed, 3 passed, 169 skipped (173 total).
Failure:
  an independently resumed child no longer pins its root:
  expected true to be false
Log: /tmp/codex-04/20048-r2-red.log

Second red proof: race verification
Same command, after ONLY the probe boundary fix.
Result: exit 1; 1 failed, 3 passed, 169 skipped (173 total).
Both probe assertions passed, including the child's own guard.
Expected unsubscribe ids: unload-root, unload-sibling.
Actual unsubscribe ids:
  unload-root, unload-child, unload-grandchild, unload-sibling.
The Deferred gate pauses the root request wrapper after unload begins, before
dispatching that request to replay. Resume completes while the unload is paused.
This proves stale subtree selection without assuming native request timing.
Log: /tmp/codex-04/20048-r2-race-red.log

Green proof
Command:
  pnpm exec vp test run apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.test.ts
Result: exit 0; 1 file passed, 173 tests passed; duration 12.68s.
Baseline test count: 173. Final test count: 173. No test cases added.
Log: /tmp/codex-04/20048-r2-green.log

Checks
- Targeted lint:
  pnpm exec vp lint --report-unused-disable-directives apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.ts apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.test.ts
  Exit 0. Two existing unused-variable warnings:
  layerCodexAppServerClientFactoryCommand (line 1382), layer (line 1621).
  Both declarations verified present in the starting local head.
  Log: /tmp/codex-04/20048-r2-lint.log
- Targeted formatting:
  pnpm exec vp fmt --check apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.ts apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.test.ts
  Initial check found one line-layout issue in production code; applied formatter.
  Final exit 0: all matched files use the correct format.
  Only a line wrap changed after the full tests and typecheck.
  Log: /tmp/codex-04/20048-r2-fmt.log
- Server-scoped typecheck:
  pnpm --filter t3 typecheck
  Checked uptime immediately before launch: load averages 1.12, 1.29, 1.14;
  explicit 1-minute load gate: 1.1181640625 <= 8.
  Exit 0; Effect suggestions only, no type errors.
  Log: /tmp/codex-04/20048-r2-typecheck.log
- git diff --check: passed.
- Commit pre-commit hook: staged-file formatting passed.
- No repository-wide checks.

Exact limitations
- Replay only. No live Codex/computer-use test, macOS cursor verification,
  or real native process/resource observation. Codex's actual unsubscribe and
  resubscription semantics for running/resumed children remain unverified.
- Ownership is recorded after successful ensure/resume. The execution-time
  check observes completed ownership transfers; it cannot cancel a child's
  unsubscribe already dispatched, or serialize native resume and unsubscribe
  requests that are concurrently in flight. No early ownership reservation,
  lock system, or native atomic guarantee was added.
- The race test gates the root request wrapper, not an actual remote response.
- The initial registered-thread snapshot remains finite; this change does not
  discover new native descendants registered after unload begins.
- Historical registry retention and the overall 10-second unload timeout remain
  unchanged and accepted. A timeout or defect can still interrupt remaining
  requests; attempt-all applies to typed failures while the effect runs.
- No live PR feedback/CI readiness claim; work and commit are local only.
- vp was not globally on PATH; used the existing workspace binary through
  pnpm exec. The first invocation refreshed local dependency links automatically;
  git status confirmed no tracked dependency/config changes.

Model/harness: gpt-6.1-sol through the Codex harness.

--- 20048-integrated-r3.log ---
note: You are running `vp test` as a Vite+ built-in command. If you meant to run the test npm script, use `vpr test` instead.

 RUN  v5.0.1 /home/ubuntu/wt/codex-04


 Test Files  1 passed (1)
      Tests  5 passed | 168 skipped (173)
   Start at  10:29:53
   Duration  11.31s (transform 70%, import 27%, tests 1%, setup 1%)

  Transform  transforming modules took 7.78s · 70% of tracked time, re-done on every run
             persist transforms across runs with fsModuleCache: true
             learn more: https://vitest.dev/guide/improving-performance#caching-between-reruns


--- Final rollback ownership fix ---
Target: [#20048](https://github.com/pingdotgg/t3code/pull/20048)
Head repository: [pingdotgg/t3code](https://github.com/pingdotgg/t3code)
Branch: t3/fix-codex-computer-use-cleanup
Original PR head: [3c42813705](https://github.com/pingdotgg/t3code/commit/3c428137055ef4a8bdc6a348f608705625782313)
Base origin/main: [1451e7cb23](https://github.com/pingdotgg/t3code/commit/1451e7cb23034d29774338608368a15d8845df36)
Starting local head: [06396c7a5f](https://github.com/pingdotgg/t3code/commit/06396c7a5f44b595dc2d6d207dbc1eb3ca98336a)
Final local commit: [beb763dc82](https://github.com/pingdotgg/t3code/commit/beb763dc828452049082d1d6e8544284e08355bf)
Full final local SHA: beb763dc828452049082d1d6e8544284e08355bf
Worktree: /home/ubuntu/wt/codex-04

Confirmed finding: [CodeRabbit rollback ownership comment](https://github.com/pingdotgg/t3code/pull/20048#discussion_r4312860304)
Review thread ID: PRRT_kwDORLtfbc6t4Zvf
Comment ID: PRRC_kwDORLtfbc8AAAABAREGkA

Supported sequence:
- CheckpointRollbackService opens a session, then invokes rollbackThread directly when later completed/interrupted/failed/cancelled runs need removal. It does not first call adapter resumeThread.
- ProviderSessionManager.open can attach an app thread to an existing shared session and returns its exposed runtime; it does not resume that provider thread. The runtime's rollbackThread is not decorated to call resumeThread.
- CodexAdapterV2.rollbackThread probes native history, finds a paginated thread with status notLoaded, resumes it directly, then reverts the requested turns.
- An existing native subagent can therefore be independently loaded for app rollback without going through ensureThread/resumeThread ownership tracking.
- Its retained native ancestry makes parent unload incorrectly unsubscribe it and its descendants unless rollback records ownership.

Smallest production fix:
- Add appOwnedThreadIds.add(threadId) immediately after the unloaded rollback thread's raw thread/resume request succeeds.
- Failed resume does not claim ownership. Successful loading owns the subscription even if a later revert fails.
- The existing unload selection, pending-work ownership boundary, active-descendant guard on failed roots, all-attempts/first-error behavior, and shared server lifetime are unchanged.
- The other raw thread/resume near line 2979 is native subagent subscription/model metadata fallback. Those children still belong to their native parent until explicitly app-loaded. Marking that path app-owned would wrongly prevent normal parent subtree cleanup. It remains unchanged.

Minimum regression:
- Add one rollback child row to the existing subtree-unload table and reuse its replay harness and metadata callback. Reuse existing rollback source-turn/result fixtures.
- The native child turn completes before its history reports notLoaded, matching idle unloading rather than pretending an active turn is unloaded.
- Invoke rollbackThread directly without adapter resumeThread; verify it sends the child load, lists native turns and reverts successfully.
- Verify parent unload unsubscribes only root and unowned sibling, preserving the rollback-loaded child and grandchild; the child's own unload subsequently unsubscribes both.
- No new test harness, file, sleeps, polling, browser, or nested agents.

Red before production change:
- Command: ./node_modules/.bin/vp test run apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.test.ts -t 'unloads only the native subagent subtree'
- Exit 1: 1 failed, 4 passed, 169 skipped (174 total).
- Failure at parent unsubscribe assertion: actual root, child, grandchild, sibling; expected root, sibling.
- Log: /tmp/codex-04/20048-rollback-red.log

Green after the one-line fix:
- Command: ./node_modules/.bin/vp test run apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.test.ts
- Exit 0: 174 passed (previously 173).
- Log: /tmp/codex-04/20048-rollback-tests.log

Other checks, all exit 0:
- ./node_modules/.bin/vp lint --report-unused-disable-directives apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.ts apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.test.ts
  Two existing unused-variable warnings on untouched production lines 1382 and 1621; no lint errors.
  Log: /tmp/codex-04/20048-rollback-lint.log
- ./node_modules/.bin/vp fmt --check apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.ts apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.test.ts
  Log: /tmp/codex-04/20048-rollback-fmt.log
- ./node_modules/.bin/tsc-rs --noEmit --project apps/server/tsconfig.json
  No TypeScript errors; existing Effect suggestions only.
  Before launch, uptime and os.getloadavg checked: one-minute load 0.9765625 <= 8.
  Logs: /tmp/codex-04/20048-rollback-load.log and /tmp/codex-04/20048-rollback-typecheck.log
- git diff --check
- Commit hook formatting completed successfully.

Final scope/status:
- Exactly the existing Codex adapter and its test file changed, committed locally.
- Final git status --short is empty.
- No pushes, GitHub mutations, browser, nested agents, repo-wide checks, unrelated thread-closed changes, or edits in another worktree.
- PR registered in the current T3 thread and confirmed linked as required by runtime; not watched.
- No unresolved issue found within this rollback ownership concern. Live native cursor/MCP process behavior was not exercised on this Linux host; no new independent review round was run within this implementation-only assignment.

--- Current parent integrated replay ---
note: You are running `vp test` as a Vite+ built-in command. If you meant to run the test npm script, use `vpr test` instead.

 RUN  v5.0.1 /home/ubuntu/wt/codex-04


 Test Files  1 passed (1)
      Tests  6 passed | 168 skipped (174)
   Start at  10:52:22
   Duration  11.72s (transform 70%, import 27%, setup 1%, tests 1%)

  Transform  transforming modules took 8.04s · 70% of tracked time, re-done on every run
             persist transforms across runs with fsModuleCache: true
             learn more: https://vitest.dev/guide/improving-performance#caching-between-reruns