# Independent proof audit pass 2 — PASS

Read-only proof review of [#24263](https://git.cafe/pingdotgg/t3code/pulls/24263), exact checkout `/home/ubuntu/wt/pr-24263`, base [8f26ed7](https://git.cafe/pingdotgg/t3code/commit/8f26ed7e279d6d290ab7200e88055b7a58982b7d), head [4cd5524](https://git.cafe/pingdotgg/t3code/commit/4cd55246672e1090c710dbb7ded76be1ea34a554). No reporting mismatch or proof blocker found within this host-only scope.

- Verified all 3,685 entries in `SHA256SUMS-final` and all 1,043 archived `evidence/SHA256SUMS` entries: zero mismatches. Checked all 13 current source pins and 15 archived source-manifest entries against actual Git objects; archived artifacts also match. Reviewed recorded symlink destinations and exact instrumentation transformations against pinned before/after sources.
- Reviewed REPORT.md, matrix CSV/JSON, capture, tracing, cache, coordinator-model and second-pass scripts and raw results. Focused test log records 3 files / 30 passing tests. The equivalence total reconciles: 4,574 + 6,176 + 29,475 = 40,225, zero differences. Matrix family counts match their result artifacts. These differential results are evidence over those fixtures, not an exhaustive equivalence theorem.
- Safely reran the supplied second-pass harness with only its output destination redirected to `/tmp/to24263-r7-proof-pass2-execution.json`. It passed actual Git/source pins, all 27 stream output hashes and parse counts, recorded sample medians, stage arithmetic, both portable C++ binaries and model totals. The original checksummed results were preserved.
- Independently reran stage tracing with output redirected to `/tmp/to24263-r7-proof-pass2-stages.json`; byte-for-byte comparison with delivered stream-stage-results.json passed. Parse entries 81 → 54; logical stage traffic 1,555,548 → 1,138,401 bytes; parser-input traffic 1,136,958 → 719,811 bytes. Raw-sample medians round correctly to 2811.230 → 1543.715 ms. Timing was checked, not freshly benchmarked by this reviewer.
- Portable cache binaries reproduce 269,254,656 → 8,388,416 accounted bytes. Accounting is explicitly limited to selected string payloads/key copies/structs, excluding allocator/capacity/rendering state. Coordinator source identity supports reuse of the deterministic HOST MODEL, whose burst counts are 134,479,872 → 524,288 modeled source bytes; starvation remains capable of accumulating completed apply captures. There is no global two-revision bound.
- Compared the markdown source with prior [efa3bb6](https://git.cafe/pingdotgg/t3code/commit/efa3bb66a594c9d5d687ad460a73f3cfff6bb95c): the executable markdown change is the backward line-boundary scan, alongside comment edits. Native archive, patch, test body and wrapper are byte-identical to that revision. This statement is scoped to the audited markdown/native files; the full revision diff includes unrelated main-branch changes.

**iOS Objective-C/Foundation/device: UNVERIFIED. Android rendering: UNVERIFIED.** No native runtime, UI/layout/frame, heap/RSS/GC or actual native scheduling performance claim is supported or made. REPORT.md clearly preserves these limits and distinguishes historical t3.15 figures from the fresh t3.16 recapture.

## FRICTION

No blocking friction. Bare `efa` was not a resolvable revision; recovered the full existing Git object `efa3bb66a594c9d5d687ad460a73f3cfff6bb95c` without fetching. Supplied second-pass/stage scripts write result files, so ran temporary copies with output redirected; temporary script copies were removed. Final checksum manifest excludes itself by necessity and records symlinks separately; external installed dependencies remain an explicitly disclosed reproducibility dependency. Existing focused tests and full 40,225-comparison capture were inspected rather than rerun to keep this pass minimal; the focused 27-update stream and portable binaries were reexecuted.

Checkout remained clean at requested head. No tracked changes, pushes, forge comments, browsers, servers, devices, emulators, remote machines, userdata access or delegation. PR was registered with this T3 thread; no watcher started. This audit does not replace CI or native release validation.

Audited independently by gpt-6.1-sol through the Codex harness in T3 Code.