docs(peer-cli): record snapshot status matrix pass

Record the post-fix peer-cli validation run against the rebuilt Docker image.
The run covered S1-S36 after the backend snapshot-ordering fix and frontend
snapshot-status reducer cleanup, including auto-install, exact transfer,
failure, propagation, concurrency, mutation, and latest-version scenarios.

Test Plan:
- git diff --check
- just peer-cli-image
- python3 crates/lanspread-peer-cli/scripts/run_extended_scenarios.py

Refs: local install/download status snapshot cleanup

PEER_CLI_SCENARIOS.md

@@ -92,6 +92,29 @@ until a dedicated fixture or temporary games root is prepared.
 
 ## Run Log
 
+### 2026-05-19 - Snapshot Status Fix Docker Matrix Pass
+
+- Code under test included `5c4976d` (`fix(peer): settle local state before
+  clearing operations`) and `6651f02` (`fix(ui): derive operation status from
+  snapshots`).
+- Gates before the matrix: `just fmt`, `just test`, `just frontend-test`, and
+  `just build` passed. The peer harness image was rebuilt with
+  `just peer-cli-image`.
+- Runner: `python3 crates/lanspread-peer-cli/scripts/run_extended_scenarios.py`
+  passed S1-S36 against the rebuilt `lanspread-peer-cli:dev` image.
+- Auto-install coverage remained good: S5 downloaded and installed `cnctw`, saw
+  the fixture payload under `local/`, and the downloaded root diffed cleanly
+  against `fixture-bravo/cnctw` excluding local metadata.
+- Large/exact transfer coverage remained good: S13 small and large downloads
+  diffed cleanly; S14 split `alienswarm` between two sources with chunk totals
+  `67,108,864` and `58,721,049` bytes and the final root diffed cleanly.
+- Failure and mutation coverage remained good: S17 latest-version conflict,
+  S19 sole-source drop, S20 write failure, S26 duplicate operation, and S35
+  unknown catalog filtering all failed safely without advertising bad local
+  state; S21-S23 propagation, S24-S25 concurrency, S29-S31 bootstrapping, S32
+  reinstall, S33 mutation install, S34 many-small-files, and S36 latest
+  singleton all passed.
+
 ### 2026-05-18 - Full Automated Docker Matrix Pass
 
 - Runner: `python3 crates/lanspread-peer-cli/scripts/run_extended_scenarios.py`