chore(storage,workspace): gates — coverage, catalogs, bilingual note

- Per-file 100% coverage across the five new packages (invariant
  companion suites, failure-injection negatives, lifecycle and
  malformed-medium branches).
- Canonical README Model Experience / Known Limitations sections; new
  storage/ and workspace/ group READMEs; packages/README.md rows (budget
  ceiling raised 760 → 790 for the two new groups).
- Cordis catalog/type-link registrations, service-role classification,
  and regenerated catalogs/graphs for the new services and events.
- Agent Note: English body + i18n pairing record; design-sketch fences
  opted out of doc-typecheck as ignore-check.
- Two exactOptionalPropertyTypes/discriminant fixes in new tests.

doc-sync (24 gates), typecheck, hygiene, and the five-package suite
(92 tests) all pass.

scripts/gen-doc-graphs.ts

@@ -77,6 +77,8 @@ const GROUP_ORDER = [
   'session-persistence',
   'session-query',
   'session-title',
+  'storage',
+  'workspace',
   'support',
   'ui',
 ]
@@ -132,6 +134,23 @@ const SERVICE_ROLES: ServiceRole[] = [
     consumers: ['agent-loop', 'tool-bash', 'hooks-claude', 'hooks-codex', 'acp', 'session-query', 'session-query-sqlite'],
     note: 'Backends persist the same SessionEvent vocabulary; apps choose a backend at composition time.',
   },
+  {
+    key: 'storage',
+    pkg: 'storage',
+    title: 'Non-session storage hub',
+    mode: 'seam',
+    implementations: ['storage-json', 'storage-sqlite'],
+    consumers: ['domain', 'workspace'],
+    note: 'Backends register side by side under names; data forms (domain first) mount on the hub and translate typed operations into opaque KV-unit primitives.',
+  },
+  {
+    key: 'workspace',
+    pkg: 'workspace',
+    title: 'Workspace entity registry',
+    mode: 'core',
+    consumers: [],
+    note: 'Owns WorkspaceId-branded records over the domain form; sessionIds is the single source of ownership truth. RPC and GUI consumers arrive next phase.',
+  },
   {
     key: 'sessionQuery',
     pkg: 'session-query',