Persistence: share entity write-through helper; normalize quota at db.put

.claude/skills/alignment/SKILL.md

@@ -129,7 +129,12 @@ Review all changes in scope. If changes span multiple patterns below, apply all
 
 12. **Persistence safety**: records that may need migration carry a `version` field; reads
     apply migrations; destructive actions (delete, revert, reset) confirm; storage failures
-    warn rather than silently lose data.
+    warn rather than silently lose data. All IndexedDB writes go through `db.put` — a
+    hand-rolled `tx(…, 'readwrite')` or raw `objectStore.put`/`delete` outside `db.ts` bypasses
+    the quota normalization that mints `StorageQuotaError`, silently losing the fail-loud signal
+    (arch 02). A new per-record entity tier's write-through subscriber calls the shared
+    `wireEntityWriteThrough` helper (`orchestration/entity-persistence.ts`) instead of
+    re-implementing the prev/next diff loop.
 
 13. **Documentation hygiene** (the docs are maintained artifacts; keep them at altitude): - **Self-containment**: documentation and comments must not add pointers that require an
     external repository to follow. Knowledge gets captured locally (`docs/spec/`,