PR #29126 runtime verification
main: 84537c4dd9 (github/main); PR: 2bb46f5b927a589544430ce3715b9aeb15a62761
Linux; Node v24.22.1; git 2.43.0; Playwright 1.60.0; /usr/bin/google-chrome

Real app flow: Add project > New project > local git repository; send Codex gpt-6.1-sol turns;
Settings > Source control > Advanced > writer model gpt-6.1-sol; Version Control > Commit.
Main server ran in /home/user/main, ports 8693/16733, and was stopped before PR startup.
PR server ran in /home/user/t3code, ports 5733/13773, reusing only the isolated /home/user/main/.t3 state.
Both color.ui and color.diff were always. The same README.md and greeting.mjs changes were used.
Provider stdin was passively captured using tee and forwarded unchanged to the real Codex CLI/local proxy.

main staged patch: 848 bytes; 42 ANSI escapes
PR staged patch: 698 bytes; 0 ANSI escapes
main patch after removing ANSI equals PR patch: true
main excerpt: "\u001b[1mdiff --git a/README.md b/README.md\u001b[m\n\u001b[1mindex bfff14e..a317a6a 100644\u001b[m\n\u001b[1m--- a/README.md\u001b[m\n\u001b[1m+++ b/README.md\u001b[m\n\u001b[36m@@ -6,7 +6,7 @@\u001b[m \u001b[mCreated in [T3 Code](https:/"
PR excerpt: "diff --git a/README.md b/README.md\nindex bfff14e..a317a6a 100644\n--- a/README.md\n+++ b/README.md\n@@ -6,7 +6,7 @@ Created in [T3 Code](https://t3.codes).\n \n ## greeting utility\n \n-`"
main UI commit: 5c9099d fix: trim greeting names and default empty names to world
PR UI commit: 6571ed8 feat: trim greeting names and default empty names to world

Supplemental production GitVcsDriverCore.readRangeContext runtime calls against the same real repository:
main commitSummary: 74 bytes; 2 ANSI escapes
main diffSummary: 124 bytes; 8 ANSI escapes
main diffPatch: 848 bytes; 42 ANSI escapes
pr commitSummary: 67 bytes; 0 ANSI escapes
pr diffSummary: 92 bytes; 0 ANSI escapes
pr diffPatch: 698 bytes; 0 ANSI escapes

Supplemental production CodexTextGeneration.generatePrContent with the PR range outputs and real gpt-6.1-sol:
{
  "title": "trim greeting names and default empty names to world",
  "body": "## Summary\n- trim surrounding whitespace from greeting names.\n- use `world` for empty or whitespace-only names.\n- document the behavior in the readme.\n\n## Testing\n- Not run."
}

Nearby flows: split diff viewer displayed the exact greeting change with normal syntax and added/deleted colors.
Git action options > Commit > manual message created 8ae96a0 docs: clarify greeting string input.
Manual commit did not invoke text generation (the count of captured exec calls stayed at three).
git status --porcelain was empty after both commits; both git color settings remained always.

Blacksmith:
vp test run apps/server/src/vcs/GitVcsDriverCore.test.ts -t "without textconv or color": 1 passed.
Initial vp run check:changed could not find the base in the shallow snapshot.
Fetched exact PR head with depth=2, then:
vp run check:changed 30654b3e91a51937d1dba18fc83af19d8003f5ca
PASS: format, lint, knip (2), GraphQL, typecheck (3 packages), tests (225 across 2 files).

Not verified: native desktop/mobile, non-Codex providers, remote/relay/tunnel.
Full Create PR UI/publication was not exercised because this task forbids touching another PR.
Range reads and real PR text generation above were direct production-service runtime calls, not an end-to-end Create PR action.
No product source changes, new tests, pushes, or other PRs were needed.