# Independent final-diff reviews

Target: [#23216](https://github.com/pingdotgg/t3code/pull/23216), GitCafe [#23204](https://git.cafe/pingdotgg/t3code/pulls/23204).
Head: [8ac56474a3](https://git.cafe/pingdotgg/t3code/commit/8ac56474a31b840c4b149d58730a0a34cf98e3df). Merge base: [b5a226e49c](https://git.cafe/pingdotgg/t3code/commit/b5a226e49c52ecab4ddc2d678a7012d97e651a6a).

Both fresh read-only reviewers, Codex GPT-6.1 Sol and Claude Opus 5.5, returned FIX_FIRST. Both judged the production parser change small and correct, with matching rendering and search semantics and unchanged double-tilde/assistant behavior. No implementation was changed in this evidence-only session.

## Confirmed blocker

`apps/server/scripts/fixtures/seed-issue-16105.py:24` resolves the supplied path but compares it to unresolved `Path.home() / '.t3'`. If the default `.t3` is a symlink to another directory named `.t3`, the guard accepts it and opens the live target for SQLite writes. Each reviewer independently reproduced the bypass using temporary fake homes. Sol intercepted `sqlite3.connect` before any write; Opus used a dummy database and observed creation of the backup, then failure on missing tables. Neither touched the real home or live database. No fix was authorized in evidence-only mode.

## Disposition of other notes

Opus objected to committing PR-only fixture/seeding sources. The active brief explicitly requires committed reproducible fixture/seeding sources, so that policy objection does not apply and is not an additional blocker. The seeder bug remains independently valid.

No desktop-specific or mobile-specific files changed. Plain mobile EAS iOS static verification is accepted from the maintainer; no separate Android/iOS surface is invented. Electron runtime is outside the file-path surface scope. Existing description/index mobile-unverified wording is historical and superseded by the appended verification update.

## Verification

Lead ran the two scoped shared files: 12/12 tests pass. Lead ran MessagesTimeline.browser.test.tsx: 10/10 tests pass. No tests or implementation changed. Sol additionally measured synthetic adversarial input of 3,000 whitespace-delimited units: median parser time 918 ms base versus 304 ms head; this is not tokenizer-counted input. No new parser/input loop is introduced by the production change. Seeder loops are fixture-sized; SQLite work scales with the target projection data.

## Provenance and limitations

Sol read forge state through Cafe. Opus's returned friction text disclosed GitHub CLI/API review-state reads despite the explicit Cafe-only instruction. The lead rejects that as an authorized forge workflow; the code finding is separately corroborated by Sol and by source inspection, so its validity does not depend on those reads. Opus did not inspect the evidence index and did not run browser tests. Runtime proof is audited separately.