Design build done: R-469, R-638 closed; R-518/R-717/R-762 narrowed, R-528 stopped by its measurement; delivery + teardown evidence; STATUS, CONTEXT, REPORT (137 -> 137; 2 opened, 2 closed); section counts recomputed

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

documentation/backlog/CLOSED-ITEMS.md

@@ -26,6 +26,15 @@
 
 ---
 
+## 2026-10-06 (evening) — the design build
+
+The full text of every row below: `git show 8db4425d98:documentation/backlog/OPEN-ITEMS.md`.
+
+| Row | What | Closed | Evidence |
+|---|---|---|---|
+| **R-469** | **[P3-LOW] REMOVE THE ENGINE-MAJOR RULE when Slice 4 (R-448) ships — a tracked act, not a lapse.** (P3) | CLOSED 2026-10-06 — BY OPERATOR RULING (`09` §3 decision 151, option A) | The engine-major gate stays as decision 35's permanent per-app check; nothing is removed. Re-read and narrowed 2026-10-06 (afternoon): R-463 closed, the gate enforces decision 35 (a PostgreSQL major passes only with a two-venue ladder entry carrying engine_conversion). |
+| **R-638** | **[P2-MEDIUM] The product's database loader cannot replay a copy over a NEWER schema: on PostgreSQL it FAILS, on MariaDB it leaves the newer version's tables behind.** (P2) | CLOSED 2026-10-06 — MEASURED SAFE ON THE MAIN PATHS + SIDE PATHS FIXED BY ORDER (`09` §3 decision 154, option A alone; option B kept as a note) | Slice 0 on 9202 (controller 0.299.0): docmost 0.95.0 -> 0.96.0 migrated 42 -> 48 tables, the household's restore of the pre-update copy put back exactly the copy's 42 (6 new gone), `Imported DB dump` logged, data read back; romm 5.0.0 -> 5.3.0, 27 -> 39, back to exactly 27 (views counted). Controller v0.301.0 (delivered to demo-hp, demo-felhom, tester-1): RestoreApp starts only the DB services, replays, then the app; a failed volume leg skips the replay (fallback and unit restore); TestR638_* 7 tests, red-proved — `audits/design-build-2026-10-06/B/`. Option B (a loader that rebuilds) stays a note: R-893 (the off-site rollback's reverse direction, not fixable by order) carries it. |
+
 ## 2026-10-06 (afternoon) — wger's two fixes proven on 9202
 
 The full text of every row below: `git show a29ee9dd33:documentation/backlog/OPEN-ITEMS.md`.