perf(app): reduce startup websocket work

Make provider catalogs compact and content-addressed so repeat launches can reuse the persisted snapshot instead of transferring it again. Remove eager global catalog loading and the stopped-agent defensive tail fetch, while keeping sequence-gap and reconnect recovery as the correctness paths. Add an opt-in production-ID Android profiling build for local startup traces.

packages/app/src/timeline/viewed-timeline-sync.test.ts

@@ -190,39 +190,6 @@ test("a gap absorbed by a running tail is recovered after the tail completes", a
   await vi.waitFor(() => expect(world.sync.getAgentTimelineStatus("agent-a")).toBe("ready"));
 });
 
-test("an idle reconciliation waits for an in-flight tail and fetches a fresh snapshot", async () => {
-  const world = new TimelineWorld();
-  world.sync.setConnected(true);
-  world.sync.replaceVisibleAgentIds("workspace", ["agent-a"]);
-  const membership = await world.nextMembership();
-  membership.succeed();
-  const initialTail = await world.nextFetch("agent-a");
-
-  world.sync.reconcileAgent("agent-a");
-
-  world.expectNoPendingFetch();
-  initialTail.respond({ hasNewer: false });
-
-  const reconciliation = await world.nextFetch("agent-a");
-  expect(reconciliation.request).toEqual({
-    direction: "tail",
-    limit: 40,
-    projection: "projected",
-  });
-  reconciliation.respond({ hasNewer: false });
-  await vi.waitFor(() => expect(world.sync.getAgentTimelineStatus("agent-a")).toBe("ready"));
-});
-
-test("does not reconcile an agent outside the viewed membership", () => {
-  const world = new TimelineWorld();
-  world.sync.setConnected(true);
-
-  world.sync.reconcileAgent("agent-a");
-
-  world.expectNoPendingFetch();
-  world.expectNoPendingMembership();
-});
-
 test("unchanged visible-set publication does not cancel paged catch-up", async () => {
   const world = new TimelineWorld();
   world.sync.setConnected(true);

packages/app/src/timeline/viewed-timeline-sync.ts

@@ -33,7 +33,6 @@ export interface ViewedTimelineSync extends ViewedTimelineUiBridge {
   setActive(active: boolean): void;
   setConnected(connected: boolean): void;
   setDeliveryMode(mode: TimelineDeliveryMode): void;
-  reconcileAgent(agentId: string): void;
   recoverGap(agentId: string, cursor: { epoch: string; endSeq: number }): void;
   dispose(): void;
 }
@@ -451,15 +450,6 @@ export function createViewedTimelineSync(ports: ViewedTimelineSyncPorts): Viewed
       if (deliveryMode === "selective" && connected) void reconcileMembership();
       else if (connected) startAcknowledgedCatchUps();
     },
-    reconcileAgent(agentId) {
-      if (!isDesired(agentId)) return;
-      const request = planTimelineTailFetch();
-      if (catchUps.get(agentId)?.status === "running") {
-        pendingCatchUps.set(agentId, request);
-        return;
-      }
-      startCatchUp(agentId, { request, supersede: true });
-    },
     recoverGap(agentId, cursor) {
       if (!isDesired(agentId)) return;
       startCatchUp(agentId, {