PR #25212 real-environment verification
main: ff71186669c863aa976cee0fdb00c20c64ea92b4
PR: 8f76af146d95e066efb3233071821b6102103f43
Linux, real git repositories cloned from GitHub, no mocks/fixtures/demo data.
Commands: git worktree add ../main github/main; vp i; background vp run dev.
Main stopped by captured PID 15339 before PR server started.
PR commands: git switch maria/takeover-pr-22469; vp i; background vp run dev --home-dir /home/user/t3code/.t3.
Main ports: web 8693, server 16733. PR ports: web 5733, server 13773.

Authenticated WebSocket vcs.createWorktree; branch = feature/ + a*90 + / + b*90 + / + c*90 (280 characters).
Main: {"_tag":"Failure","cause":[{"_tag":"Fail","error":{"_tag":"GitCommandError","operation":"GitVcsDriver.createWorktree","command":"git","cwd":"/home/user/worktree-verification","argumentCount":7,"exitCode":128,"stdoutLength":0,"stderrLength":672,"detail":"git worktree add failed"}}]}
No worktree was created on main. The branch itself remained valid.

PR server, same branch and real repository:
{"status":"Success","path":"/home/user/t3code/.t3/worktrees/worktree-verification/feature-aaaaaaaaaaaaaaa-42b3c6680fac795f","folderLength":40,"branchMatches":true,"readme":"Hello World!"}
{"status":"Success","path":"/home/user/t3code/.t3/worktrees/worktree-verification/feature-aaaaaaaaaaaaaaa-75e04c8e4b5ca65e","folderLength":40,"branchMatches":true,"readme":"Hello World!"}
{"status":"Success","path":"/home/user/t3code/.t3/worktrees/worktree-verification/verification-short","folderLength":18,"branchMatches":true,"readme":"Hello World!"}

Real client: Playwright from repo dependencies, /usr/bin/google-chrome.
Added projects through Add project > Local folder. Selected generated long-branch worktree from branch picker.
Codex gpt-6.1-sol completed a real turn, ran pwd / git branch --show-current / head README, and reported the generated 40-character folder and original 280-character branch.
Also exercised actual Branch picker > #200 > Checkout pull request > Worktree using public tsuna-can-se/md2pdf-doc-template#200 from the original bug report.
Codex gpt-6.1-sol completed pwd, git branch --show-current, git status --short, basename/count in that worktree.
Output:
/home/user/t3code/.t3/worktrees/md2pdf-verification/dependabot-npm_and_yarn-61a84bc822e6660b
dependabot/npm_and_yarn/textlint-rule-preset-ja-spacing-3.0.4
[git status --short: empty]
dependabot-npm_and_yarn-61a84bc822e6660b
40

Reloaded the client: persisted thread and output rendered.
Repeated git.preparePullRequestThread: {"_tag":"Success","value":{"pullRequest":{"number":200,"title":"dependencies(npm): bump textlint-rule-preset-ja-spacing from 2.4.3 to 3.0.4","url":"https://github.com/tsuna-can-se/md2pdf-doc-template/pull/200","baseBranch":"main","headBranch":"dependabot/npm_and_yarn/textlint-rule-preset-ja-spacing-3.0.4","state":"open"},"branch":"dependabot/npm_and_yarn/textlint-rule-preset-ja-spacing-3.0.4","worktreePath":"/home/user/t3code/.t3/worktrees/md2pdf-verification/dependabot-npm_and_yarn-61a84bc822e6660b","isOnPullRequestHead":true}}
Git worktree list confirmed the same path, without a duplicate worktree.

Not verified: native Windows path budgets/core.longpaths, macOS/Electron shell, native iOS/Android, relay/tunnel, other providers.