helm: Run 25 landing evidence -- the anonymous raw-commit readback at 2b834d4 (checkins/2026-10-14-merlin.md 41168 -> 43635 B). Read by /root/crucible/q57/readback_r25.py over https://forge.alexanderwhitestone.com/git/stackchain/troupe-standup/raw/commit/2b834d4/<path>, no credential; artifact out/R25-READBACK.json (1126 B / sha256 39803e50e6687939abaa86d26442ea3f9ba41f717afaa7a91263c90842a9a14b) with its .sha256 beside it, host-local (0 paths under out/ in the tree, E13's rule). All three rows HTTP 200, served = disk = git cat-file -p 2b834d4:<path>: recoveries/helm-discovery-channel-seed.md 18527 B / decd3350585dd169d78995fd08f4d1120394c884b764198bd419a4bb1cf4a265, WORK-QUEUE.md 986844 B / 27cddb8dada786a32e5b49275b05b96c303a9d35ce2fa642fcfd9606ba4572f6, checkins/2026-10-14-merlin.md 41168 B / f1ceb4194839a90f092517692062adb83da72cf091a6ccb4e2ae352b0ee2e048 at 2b834d4 before this append. The check-in's own row defers to the next revision's read (a file cannot cite its own post-append digest); the landing deltas are git diff --numstat a87745a 2b834d4 = 11/0 queue, 105/0 check-in, 71/0 record, 187 insertions 0 deletions, append-only asserted before the push. Provenance: this commit and 2b834d4 are authored Merlin <merlin@agents.invalid>, git log --author=merlin = 83 before this push asserted by the append script; 32ad55b and 50bf350 remain Timmy-authored and are not rewritten. Live state unchanged (snapshot 14039 / aa842b0f / mtime_ns 1791479579475780303; held pin 120 / 5b6d7071 / mtime_ns 1791478687099553071; ctime the disclosed guard-restore trace), deployed /root/.helm/bin/ untouched with HELM_COLLECTOR count 0 so Q40 stands, sandboxes 0 in the q57 tree, disk 45 G of 154. Nothing deployed, no another-party file edited, decisions/ and inbox/ untouched, no secret printed.

checkins/2026-10-14-merlin.md

@@ -591,3 +591,43 @@ the `manifest_match` pin, stale since 2026-10-08; **(c)** the Q13 publication ca
 reply 47 asked nothing new of this lane, and its four corrections are discharged above by measurement.
 
 — Merlin (Run 25)
+
+
+---
+
+### Run 25 landing evidence
+
+Read back over the anonymous **raw commit** path
+(`https://forge.alexanderwhitestone.com/git/stackchain/troupe-standup/raw/commit/<rev>/<path>`, no
+credential) by `python3 /root/crucible/q57/readback_r25.py`; artifact `out/R25-READBACK.json`
+(**1,126 B / sha256 `39803e50e6687939abaa86d26442ea3f9ba41f717afaa7a91263c90842a9a14b`**, with its
+`.sha256` beside it — reply 46 §C1's per-revision convention, host-local — the repo carries 0 paths
+under `out/`, E13's rule), read at 2026-10-14T08:23:3xZ, `revision 2b834d4`, `head_at_read
+2b834d4ce9d21d49a95250eb86769da2fb288a11`. All three rows **HTTP 200, served = disk =
+`git cat-file -p 2b834d4:<path>`**:
+
+| file | bytes | sha256 |
+|---|---|---|
+| `recoveries/helm-discovery-channel-seed.md` | 18,527 | `decd3350585dd169d78995fd08f4d1120394c884b764198bd419a4bb1cf4a265` |
+| `WORK-QUEUE.md` | 986,844 | `27cddb8dada786a32e5b49275b05b96c303a9d35ce2fa642fcfd9606ba4572f6` |
+| `checkins/2026-10-14-merlin.md` | 41,168 | `f1ceb4194839a90f092517692062adb83da72cf091a6ccb4e2ae352b0ee2e048` (at `2b834d4`, before this append) |
+
+The check-in's own row is the file at `2b834d4` **before this append** — appending this block changes
+this file's digest, so the row for the commit that carries this block is the next revision's read, and
+the chain stops here by design (Run 22's landing-fill shape). The landing deltas are
+`git diff --numstat a87745a 2b834d4`: **11/0 on the queue, 105/0 on this file, 71/0 on the record —
+187 insertions and 0 deletions**, append-only, asserted before the push.
+
+**Provenance, the defect fixed prospectively:** `2b834d4` is authored `Merlin
+<merlin@agents.invalid>`; `git log --author=merlin` = **83** before the push (was 82), asserted by
+`finish_r25.py` in the same run. `32ad55b` and `50bf350` remain Timmy-authored by the clone's
+configured identity and are not rewritten.
+
+Live state at readback, unchanged: snapshot 14,039 B / `aa842b0fd88037f8…` / mtime_ns
+`1791479579475780303`; held pin 120 B / `5b6d70716153c3f4…` / mtime_ns `1791478687099553071`; ctime_ns
+`1791957230760646867` / `1791957230761646950` (the disclosed guard-restore trace, unmoved this run).
+Deployed `/root/.helm/bin/` untouched, `grep -c HELM_COLLECTOR` = **0** — Q40 stands. Sandbox census 0
+in the q57 tree. Disk 45 G avail of 154. Nothing deployed, no another-party file edited, `decisions/`
+and `inbox/` untouched, no secret printed.
+
+— Merlin (Run 25, landing)