PR 18371 real Linux dev verification
main: 575579d68ac4bae09f8426a345d4a3eac1e90c67
PR head: 702e6d45d1b8045777ab9208c0ac87e8b5822d17
Browser: repository Playwright 1.60.0 + /usr/bin/google-chrome, 1440x1000.
Only one dev server ran at a time. main stopped before PR startup.
Data created through app UI and real Codex gpt-6.1-sol turns.

Unrelated project: /home/user/main/.t3/projects/guide-verification
origin: https://github.com/octocat/Hello-World.git
Linked target: https://github.com/pingdotgg/t3code/pull/18371
main UI Write guide: rejected with "Guides are written from this project’s checkout, and this pull request is in another repository."
PR UI Write guide: generated a five-stop guide through Codex gpt-6.1-sol.
Observed temporary repository: .t3/worktrees/review-guide-xtK1Sg/checkout
$ git -C <temporary-checkout> rev-parse HEAD
702e6d45d1b8045777ab9208c0ac87e8b5822d17
$ git -C <temporary-checkout> rev-parse --is-shallow-repository
false
$ git -C <temporary-checkout> diff --name-only <merge-base> HEAD
apps/server/src/mcp/toolkits/pullRequests/handlers.test.ts
apps/server/src/mcp/toolkits/pullRequests/handlers.ts
apps/server/src/mcp/toolkits/pullRequests/tools.ts
apps/server/src/pullRequest/PullRequestReviewGuideService.test.ts
apps/server/src/pullRequest/PullRequestReviewGuideService.ts
docs/user/source-control.md

After generation:
status unchanged
refs unchanged
worktrees unchanged
head unchanged
FETCH_HEAD still absent
Temporary checkout removed; worktrees directory empty.
Guide stop navigation and code excerpts worked. Code tab showed six files.
Guide survived browser reload with no new generation.
Stored guide: github.com, pingdotgg/t3code, #18371; head 702e6d45d1b8045777ab9208c0ac87e8b5822d17; model codex/gpt-6.1-sol; five stops.

Matching checkout neighbor:
UI thread in /home/user/t3code/apps/server linked git.cafe mirror #18371.
Write guide created registered detached worktree review-guide-rwBSnV/checkout at exact same head.
Real Codex gpt-6.1-sol completed a four-stop guide at 2026-10-31T23:44:25.510Z.
matching status unchanged
matching head unchanged
matching worktrees unchanged
Temporary checkout and registration removed.

Real MCP client/provider path:
Asked Codex in unrelated project to call read_pull_request_guide for GitHub #18371.
UI tool: "Read a review guide". Result: run null, stale false, currentHeadSha 702e6d45d1b8045777ab9208c0ac87e8b5822d17.
Provider response: head commit 702e6d45d1b8045777ab9208c0ac87e8b5822d17, model gpt-6.1-sol, stops 5.

Blacksmith:
vp test run apps/server/src/pullRequest/PullRequestReviewGuideService.test.ts apps/server/src/mcp/toolkits/pullRequests/handlers.test.ts
49 passed.
vp run check:changed github/main
pass format, lint, knip (both), graphql, typecheck (3 packages), test (50 tests in 3 files).
Worker needed base history fetched before check:changed could calculate merge base.
GitCafe reports 32 successful checks, zero failing/pending on head.

Limitations:
Linux web client only; native mobile and Electron/macOS/Windows unverified.
No-project generation, live GitLab/Forgejo/Azure/Bitbucket hosts, rejected-SHA refs, cancellation/failure cleanup, and stale-head transitions not exercised end-to-end. Existing focused tests cover these service paths where present.
VM stalled during initial evidence export; app recovered and continued real turns. No provider turn exceeded ten minutes. Short video omits idle generation wait and reload splash.