PR #29584 real runtime verification, 2026-11-03, Linux Boat VM
main: e1e520c93c (github/main)
PR head: 78b1b9edab1d9be2511266e4b1fb9667f25f0c89
Browser: repository Playwright 1.60.0, /usr/bin/google-chrome
Provider: Codex gpt-6.1-sol through local proxy

Main reproduction (observed through CLI launch and web Retry):
1. Added /home/user/verify-worktree-retry as a project through the web UI.
2. Made .t3/worktrees/verify-worktree-retry unwritable (chmod 500).
3. Ran: timeout 40 node apps/server/src/bin.ts thread start --base-dir .t3 --provider codex --model gpt-6.1-sol --worktree main --branch fix/retry-verification --json /home/user/verify-worktree-retry "Read README.md and report its contents. Do not change any files."
4. Launch failed at GitVcsDriver.createWorktree. git branch listed fix/retry-verification.
5. Restored directory permissions (chmod 700), clicked Retry in the web UI.
6. Still failed: GitVcsDriver.createWorktree.createBranch ... (branch_already_exists).
7. Stopped main server process group using captured PID 30006.

PR reproduction with identical repository, message and explicit branch:
1. Removed only main reproduction orphan fix/retry-verification for a clean comparison.
2. Started exact PR head with isolated --home-dir /home/user/t3code/.t3, added project through UI.
3. Repeated chmod 500 and the same CLI launch command.
4. Launch failed. git branch --list fix/retry-verification returned no branch.
5. Restored chmod 700 and clicked Retry in web UI.
6. Codex completed, reading real README.md: "worktree retry verification".
7. Sent follow-up via web composer: pwd and git branch --show-current.
8. Codex reported /home/user/t3code/.t3/worktrees/verify-worktree-retry/fix-retry-verification and fix/retry-verification.

Neighbors:
- Existing branch creation was rejected, preserving existing-verification at a64c17e782c67dfc0bff7ec452f1bc6d5e9002b3.
- Normal launch on fix/normal-worktree completed using Codex gpt-6.1-sol, reporting correct cwd, branch and README contents.
- No files modified in either completed worktree.

Current runtime results (from t3 thread show --json):
{"title":"Read README.md and report its contents. Do not change any files.","status":"completed","providerInstanceId":"codex","model":"gpt-6.1-sol","branch":"fix/retry-verification","worktreePath":"/home/user/t3code/.t3/worktrees/verify-worktree-retry/fix-retry-verification","runCount":2}
i'll read README.md and report what it contains.
README.md contains:

```text
worktree retry verification
```

no files were changed.
i'll run both commands and report their outputs.
`pwd`:
```text
/home/user/t3code/.t3/worktrees/verify-worktree-retry/fix-retry-verification
```

`git branch --show-current`:
```text
fix/retry-verification
```

no files were changed.
{"title":"Normal worktree launch","status":"completed","providerInstanceId":"codex","model":"gpt-6.1-sol","branch":"fix/normal-worktree","worktreePath":"/home/user/t3code/.t3/worktrees/verify-worktree-retry/fix-normal-worktree","runCount":1}
i'll run both commands and read README.md without changing files.
- `pwd`: `/home/user/t3code/.t3/worktrees/verify-worktree-retry/fix-normal-worktree`
- branch: `fix/normal-worktree`
- README.md: `worktree retry verification`

no files changed.
{"title":"Existing branch protection","status":"failed","providerInstanceId":"codex","model":"gpt-6.1-sol","branch":"existing-verification","worktreePath":null,"runCount":1}

git rev-parse existing-verification: a64c17e782c67dfc0bff7ec452f1bc6d5e9002b3
git status --porcelain in recovered and normal worktrees: empty for both
Blacksmith: vp test run apps/server/src/vcs/GitVcsDriverCore.test.ts -t "worktree operations": 31 passed, 194 filtered out
Blacksmith: vp run check:changed cbd3e149a130f1d99d2d067c77b9889d64e28755: passed format, lint, knip, GraphQL generation, 3 package typechecks, 226 tests.