Show fresh player capacity on Fleet cards

tests/unit/ui-server-clock.test.ts

@@ -86,6 +86,33 @@ function queueEvent(type: string, data: object) {
 }
 
 describe('animation-frame stream batching', () => {
+    it('replaces snapshot capacity with live values and honors explicit unavailable samples', async () => {
+        const at = new Date(epoch).toISOString();
+        snapshot.servers = [server(epoch, { capacity: 4, capacity_observed_at: at })];
+        const { fleetServers } = await setup();
+        expect(get(fleetServers)[0]).toMatchObject({ capacity: 4, capacity_observed_at: at });
+        await vi.advanceTimersByTimeAsync(1000);
+        emit(epoch + 1000, [status(epoch + 1000, { capacity: 8, capacityObservedAt: new Date(epoch + 1000).toISOString() })]);
+        expect(get(fleetServers)[0].capacity).toBe(8);
+        await vi.advanceTimersByTimeAsync(1000);
+        emit(epoch + 2000, [status(epoch + 2000, { capacity: null, capacityObservedAt: null })]);
+        expect(get(fleetServers)[0]).toMatchObject({ capacity: null, capacity_observed_at: null });
+    });
+
+    it('expires capacity independently of fresh rosters and rejects the previous lifecycle limit', async () => {
+        const at = (offset = 0) => new Date(epoch + offset).toISOString();
+        snapshot.servers = [server(epoch, { capacity: 4, capacity_observed_at: at(-90_000),
+            container_state: 'running', container_checked_at: at() })];
+        const { fleetServers } = await setup();
+        expect(get(fleetServers)[0].capacity).toBe(4);
+        await vi.advanceTimersByTimeAsync(1000);
+        queueEvent('server-telemetry', { serverNow: epoch + 1000, entries: [{ ...gameEvent('heartbeat', 15, 3), receivedAt: at(1000) }] });
+        flushFrame();
+        expect(get(fleetServers)[0]).toMatchObject({ health: 'online', last_players: 3, capacity: null, capacity_observed_at: null });
+        emit(epoch + 1000, [status(epoch + 1000, { capacity: 4, capacityObservedAt: at(), telemetryAfter: at(1) })]);
+        expect(get(fleetServers)[0]).toMatchObject({ capacity: null, capacity_observed_at: null });
+    });
+
     it('publishes each changed store once for a burst and preserves lifecycle evidence through heartbeats', async () => {
         const stores = await setup();
         emit(epoch, [status(epoch), status(epoch, { server: 'two' })]);