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.

docs/capability-seams.md

@@ -36,6 +36,13 @@ flowchart LR
   pkg_hooks_claude["hooks-claude"]
   pkg_hooks_codex["hooks-codex"]
   pkg_acp["acp"]
+  pkg_storage["storage"]
+  svc_storage["ctx.storage<br/>Non-session storage hub"]
+  pkg_storage_json["storage-json"]
+  pkg_storage_sqlite["storage-sqlite"]
+  pkg_domain["domain"]
+  pkg_workspace["workspace"]
+  svc_workspace["ctx.workspace<br/>Workspace entity registry"]
   svc_sessionQuery["ctx.sessionQuery<br/>Session reads, traces, filters, and search"]
   pkg_session_reference["session-reference"]
   svc_sessionReferences["ctx.sessionReferences<br/>Cross-session snapshot preparation"]
@@ -166,6 +173,9 @@ flowchart LR
   pkg_skill_local --> svc_skills
   pkg_spill --> svc_spillStore
   pkg_spill_local --> svc_spillStore
+  pkg_storage --> svc_storage
+  pkg_storage_json --> svc_storage
+  pkg_storage_sqlite --> svc_storage
   pkg_subagent --> svc_subagents
   pkg_subagent_acp --> svc_subagents
   pkg_subagent_fork --> svc_subagents
@@ -185,6 +195,7 @@ flowchart LR
   pkg_web_search_perplexity --> svc_web
   pkg_workflow --> svc_workflows
   pkg_workflow_workerthread --> svc_workflows
+  pkg_workspace --> svc_workspace
   svc_agentLoop --> pkg_agent_spine_demo
   svc_agents --> pkg_acp
   svc_agents --> pkg_agent_loop
@@ -235,6 +246,8 @@ flowchart LR
   svc_sessions --> pkg_subagent_inprocess
   svc_skills --> pkg_tool_skill
   svc_spillStore --> pkg_spill_policy
+  svc_storage --> pkg_domain
+  svc_storage --> pkg_workspace
   svc_subagents --> pkg_tool_ralph
   svc_subagents --> pkg_tool_subagent
   svc_systemPrompt --> pkg_agent_loop
@@ -276,6 +289,8 @@ flowchart LR
 | `ctx.sessions` | `core` | [`session`](../packages/core/session) | - | [`agent-loop`](../packages/core/agent-loop), [`agent`](../packages/core/agent), [`cli-demo`](../packages/examples/cli-demo), [`session-persistence`](../packages/session-persistence/session-persistence), [`session-query`](../packages/session-query/session-query), [`session-query-sqlite`](../packages/session-query/session-query-sqlite), [`subagent-inprocess`](../packages/subagent/subagent-inprocess), [`invariants`](../packages/support/invariants) | - | Owns append-only Session instances and emits the durable session event feed. |
 | `ctx.invariants` | `core` | [`invariants`](../packages/support/invariants) | - | [`session`](../packages/core/session), [`agent`](../packages/core/agent), [`scope`](../packages/core/scope), [`agent-loop`](../packages/core/agent-loop) | - | Companion subpaths register owner-local checks; the service owns selection, uniqueness, child fibers, and package-attributed failures. |
 | `ctx.sessionPersistence` | `seam` | [`session-persistence`](../packages/session-persistence/session-persistence) | [`session-persistence-jsonl`](../packages/session-persistence/session-persistence-jsonl), [`session-persistence-sqlite`](../packages/session-persistence/session-persistence-sqlite) | [`agent-loop`](../packages/core/agent-loop), [`tool-bash`](../packages/bash/tool-bash), [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex), [`acp`](../packages/ui/acp), [`session-query`](../packages/session-query/session-query), [`session-query-sqlite`](../packages/session-query/session-query-sqlite) | - | Backends persist the same SessionEvent vocabulary; apps choose a backend at composition time. |
+| `ctx.storage` | `seam` | [`storage`](../packages/storage/storage) | [`storage-json`](../packages/storage/storage-json), [`storage-sqlite`](../packages/storage/storage-sqlite) | [`domain`](../packages/storage/domain), [`workspace`](../packages/workspace/workspace) | - | Backends register side by side under names; data forms (domain first) mount on the hub and translate typed operations into opaque KV-unit primitives. |
+| `ctx.workspace` | `core` | [`workspace`](../packages/workspace/workspace) | - | - | - | Owns WorkspaceId-branded records over the domain form; sessionIds is the single source of ownership truth. RPC and GUI consumers arrive next phase. |
 | `ctx.sessionQuery` | `seam` | [`session-query`](../packages/session-query/session-query) | [`session-query-sqlite`](../packages/session-query/session-query-sqlite) | [`session-reference`](../packages/context/session-reference) | - | The interface supplies exact reads, filters, and traces; its concrete backend adds full-text reconciliation, ranking, snippets, and cursor generations on the same service. |
 | `ctx.sessionReferences` | `core` | [`session-reference`](../packages/context/session-reference) | - | [`tui`](../packages/ui/tui), [`acp`](../packages/ui/acp) | - | Projects bounded current-surface conversation snapshots into durable untrusted message context; host adapters own mention syntax. |
 | `ctx.sessionTitle` | `seam` | [`session-title`](../packages/session-title/session-title) | [`session-title-first-message-llm`](../packages/session-title/session-title-first-message-llm), [`session-title-all-messages-llm`](../packages/session-title/session-title-all-messages-llm) | - | - | Owns the deterministic fallback, latest-title fold, and sole optional asynchronous provider registration. |