PR #28508 live verification, Linux / Chrome / Codex gpt-6.1-sol

BASELINE
$ git rev-parse github/main
7195b699547b538e49f758e314dde5c8c5d907cf
$ git worktree add ../main github/main
$ cd ../main && vp i
$ setsid nohup vp run dev > /tmp/main-dev.log 2>&1 &
Captured process-group leader: 48969
[dev-runner] serverPort=16733 webPort=8693 baseDir=/home/user/main/.t3

Through the web UI: added a real local Git repository; chose Codex
GPT-6.1-Sol, Low, Full access, New worktree; sent a read-only branch/status
turn and then a second turn asking git branch -m verify/renamed.

$ sqlite3 -readonly .t3/userdata/statev2.sqlite <select thread title, branch, worktree>
Check Current Git Branch|t3/report-current-branch|/home/user/main/.t3/worktrees/branch-follow-verification/t3-46c69e29
$ git -C .t3/worktrees/branch-follow-verification/t3-46c69e29 branch --show-current
verify/renamed

The live Git panel showed verify/renamed; the sidebar still showed
t3/report-current-branch. Sidebar context menu > Copy > Branch copied
"t3/report-current-branch". Bug reproduced.

Stopped baseline by its captured process group. Confirmed both listeners
were gone before starting the PR.

PR
$ git checkout -b fix/worktree-branch-follow 4099f5f3a09f04ea7bd08bde0723678ddbb085e2
$ vp i
$ setsid nohup vp run dev > /tmp/dev.log 2>&1 &
Captured process-group leader: 56065
[dev-runner] serverPort=13773 webPort=5733 baseDir=/home/user/t3code/.t3

Repeated the same web UI project/worktree flow and identical two prompts
with Codex gpt-6.1-sol, Low, Full access on the exact PR head.
After the rename turn completed:
$ sqlite3 -readonly .t3/userdata/statev2.sqlite <select thread title, branch, worktree>
Check Current Git Branch|verify/renamed|/home/user/t3code/.t3/worktrees/branch-follow-verification/t3-41e7ce76
$ git -C .t3/worktrees/branch-follow-verification/t3-41e7ce76 branch --show-current
verify/renamed
Sidebar row, hover card and Copy > Branch all showed/copied verify/renamed.
Reloaded the web client: sidebar still showed verify/renamed.

NEIGHBORING BEHAVIOR (real Codex turns in the same thread)
1. git switch -c verify/switched
   Provider completed. Sidebar and live Git panel followed verify/switched.
2. git switch --detach HEAD
   Provider completed. git status --short --branch returned ## HEAD (no branch).
   Read-only projection query still returned verify/switched, matching the
   sidebar. A detached checkout does not erase the recorded branch.
3. git switch verify/switched
   Provider completed and reported a clean working tree on verify/switched.
   Sidebar and live Git panel agreed again.

CHECKS
$ blacksmith-check run --id <task-owned-box> "timeout 480 vp test run apps/server/src/orchestration-v2/RunFinalizationService.test.ts apps/server/src/orchestration-v2/RunFinalizationQueue.test.ts"
2 test files passed; 11 tests passed. Worker stopped afterward.
Existing CI at head 4099f5f3: 29 successful, 0 pending, 0 failing.
No source edits, commits, or pushes made during verification.

NOT VERIFIED
Native Electron, iOS/Android, macOS/Windows, other providers, remote/relay
connections, and live concurrent worktree reassignment or shared-worktree
races. Temporary/shared/foreign-worktree guards have focused test coverage,
but those guards were not driven through live user sessions here.