v1.13.11-b: convert raw broker.publish call sites to typed publishFrame

Second half of the WebSocket-frame-typing batch. Phase A (8b568b3)
landed the schemas + frontend receive validation + publishFrame /
publishUserFrame wrappers. This commit converts the existing publish
call sites so every server-emitted WS frame now goes through Zod
validation at the broker boundary.

Conversion strategy: change once in the inference / skills adapters in
index.ts (so ctx.publish / ctx.publishUser propagate to publishFrame /
publishUserFrame for ALL ~50 inference + auto_name call sites in one
move), then bulk-replace the ~30 direct broker.publish* call sites in
the routes + compaction.

Files touched:
- index.ts: inference + skills route adapters now call publishFrame /
  publishUserFrame internally; raw broker.publishUser('default', ...)
  call in the stale-row sweeper also converted.
- routes/projects.ts (7 sites), routes/chats.ts (9 sites),
  routes/sessions.ts (8 sites): all broker.publishUser(...) → broker.
  publishUserFrame(...).
- services/compaction.ts (3 sites): 2 publishUser, 1 publish.

Real protocol drift surfaced by Zod, fixed in the same commit:

  services/compaction.ts:442 was publishing chat_status with status:
  'working' — the v1.12.1 chat_status widening (CLAUDE.md:55) dropped
  this enum value in favor of streaming|tool_running|waiting_for_input|
  idle|error. The compaction.ts site was missed during v1.12.1; the
  frame had been published with an unknown enum value ever since (the
  frontend useChatStatus quietly ignored it). Corrected to 'streaming'
  — compaction's LLM call has the same dot-state semantic as an
  inference turn. This is exactly the class of bug v1.13.11 exists to
  catch.

Schema relaxation: OpaqueObject (the bag type for nested entities like
Project / Chat / Session / WorkspacePane embedded in WS frames) was
z.object({}).passthrough(), which Zod outputs as {} & {[k:string]:
unknown}. The strict-typed entities don't have index signatures so
TypeScript rejected them at publishFrame call sites. Relaxed to
z.unknown() — runtime validation still accepts the value, dev-time
narrowing happens via the existing hand-maintained types. Trade-off:
frame-level drift detection stays sharp; nested-payload validation
goes to follow-up work as the brief intended.

Schema audit:
  grep -rn "broker\.publish(\|broker\.publishUser(" apps/server/src \
    --include="*.ts" | grep -v "broker.ts\|__tests__\|.bak"
  → 0 results. Every server publish goes through publishFrame /
  publishUserFrame. The remaining ctx.publish / ctx.publishUser sites
  in services/inference/* + services/auto_name.ts route through the
  index.ts adapter, which calls publishFrame internally.

Tests: 219/219 pass (unchanged from v1.13.11-a; the Phase B conversion
is mechanical and doesn't add test cases).

Smoke: clean container boot, no ws-frame-validation-failed entries
under normal traffic. Sidebar list refresh + agent picker open both
pass through useUserEvents without drops.

~70 LoC across 7 files. v1.13.11 closed.

apps/server/src/routes/projects.ts

@@ -129,7 +129,7 @@ export function registerProjectRoutes(
         RETURNING id, name, path, added_at, last_session_id, status, gitea_remote,
                   default_system_prompt, default_web_search_enabled
       `;
-      broker.publishUser('default', { type: 'project_created', project: row as unknown as Project });
+      broker.publishUserFrame('default', { type: 'project_created', project: row as unknown as Project });
       reply.code(201);
       return {
         project: row,
@@ -186,11 +186,11 @@ export function registerProjectRoutes(
     `;
 
     if (existing.length === 0) {
-      broker.publishUser('default', { type: 'project_created', project: row as unknown as Project });
+      broker.publishUserFrame('default', { type: 'project_created', project: row as unknown as Project });
       reply.code(201);
     } else {
       // existing.status was 'archived' — row has been restored.
-      broker.publishUser('default', { type: 'project_unarchived', project: row as unknown as Project });
+      broker.publishUserFrame('default', { type: 'project_unarchived', project: row as unknown as Project });
       reply.code(200);
     }
     return row;
@@ -243,7 +243,7 @@ export function registerProjectRoutes(
     // v1.9: the project_updated frame still only carries id + name. Clients
     // that need the new fields refetch via api.projects.list() — keeps the
     // frame payload lean, per the locked recon decision (d).
-    broker.publishUser('default', {
+    broker.publishUserFrame('default', {
       type: 'project_updated',
       project_id: project.id,
       name: project.name,
@@ -260,7 +260,7 @@ export function registerProjectRoutes(
       reply.code(404);
       return { error: 'not found or already archived' };
     }
-    broker.publishUser('default', { type: 'project_archived', project_id: req.params.id });
+    broker.publishUserFrame('default', { type: 'project_archived', project_id: req.params.id });
     reply.code(204);
     return null;
   });
@@ -277,7 +277,7 @@ export function registerProjectRoutes(
       return { error: 'not found or not archived' };
     }
     const project = rows[0]!;
-    broker.publishUser('default', { type: 'project_unarchived', project });
+    broker.publishUserFrame('default', { type: 'project_unarchived', project });
     return project;
   });
 
@@ -288,7 +288,7 @@ export function registerProjectRoutes(
       reply.code(404);
       return { error: 'not found' };
     }
-    broker.publishUser('default', { type: 'project_deleted', project_id: id });
+    broker.publishUserFrame('default', { type: 'project_deleted', project_id: id });
     reply.code(204);
     return null;
   });