PR #29619 real development verification
Main: 71646e031a6dc9db1309b3b9dff597f872cf2fd3
PR: 35a947de9e88d2622c8ae4cfc4572a7d8e61612b
Linux, /usr/bin/google-chrome, repository Playwright 1.60.0.
Fresh isolated T3 state; project and thread created in web UI.
Real Codex gpt-6.1-sol turns created README and scenario commits.
No mocks, fixtures, replay provider, or seeded application data.

MAIN: after host-side deletion in the disposable bare origin and fetch --prune:
$ git -C /home/user/pr29619-scenario status -sb
## feature/republish...origin/feature/republish [gone]
$ git -C /home/user/pr29619-scenario rev-parse HEAD
20b47f7d8b070f02105775558320b24f0dc4935b
Clicked Git action options > Push in the running web app: displayed Done.
$ git -C /home/user/pr29619-origin.git show-ref --heads
d90af3588bd954f110c4bf391865385bd4933ff1 refs/heads/main
The feature branch was still absent. Bug reproduced.

PR: same isolated state, local repository, branch, and commit.
Clicked Git action options > Push: Pushed to origin/feature/republish.
$ git -C /home/user/pr29619-origin.git show-ref --heads
20b47f7d8b070f02105775558320b24f0dc4935b refs/heads/feature/republish
d90af3588bd954f110c4bf391865385bd4933ff1 refs/heads/main
$ git -C /home/user/pr29619-scenario status -sb
## feature/republish...origin/feature/republish
Opening Push again while up to date: disabled, No local commits to push.

PR: fork and literal name check, prepared by real Codex turn.
Remote fork and colliding remote feature point to another real bare repository.
Deleted fork branch directly, fetched --prune, committed followup.
Clicked Git action options > Push: Pushed to fork/feature/republish.
$ git -C /home/user/pr29619-fork.git show-ref --heads
fdc58819da12000d21df0ff55168fe2a3c498a12 refs/heads/feature/republish
$ git -C /home/user/pr29619-origin.git rev-parse refs/heads/feature/republish
20b47f7d8b070f02105775558320b24f0dc4935b
Fork updated, origin unchanged, full feature/republish name preserved.

PR: combined Commit & push on main with origin/main deleted and pruned.
Real Codex turn appended README change, leaving it uncommitted.
Clicked Commit & push, then Commit & push to main confirmation.
App: Pushed 07cbf4b to origin/main; docs: add combined commit and push verification.
$ git -C /home/user/pr29619-scenario status -sb
## main...origin/main
$ git -C /home/user/pr29619-origin.git show-ref --heads
20b47f7d8b070f02105775558320b24f0dc4935b refs/heads/feature/republish
07cbf4bd27e827e8c82591cffd8d277bb5a3f431 refs/heads/main

Blacksmith: vp test run apps/server/src/vcs/GitVcsDriverCore.test.ts apps/server/src/git/GitManager.test.ts apps/server/src/git/GitWorkflowService.test.ts
3 files passed, 340 tests passed.

Not exercised: native desktop/mobile clients, macOS/Windows, external hosted PR creation,
unborn-HEAD pull or local-upstream recovery through the running app.
Deletion with a stale, unpruned tracking ref is outside this fix and was not verified.