test(e2e): event log entries + restart persistence

smoke: jump (shared helper) + scan, then assert both events are in
GET /api/events with the newer one first, and that the EVENT LOG terminal
renders both T<turn> // <MESSAGE> lines. Idempotent across retries — asserts
on this run's own entries by turn/message, never absolute counts. state: the
latest five log lines come back identical (ids included) after the mid-run
container restart.

e2e/state.spec.ts

@@ -17,6 +17,7 @@ interface ShipSystemDto { id: number; type: string; level: number; capacity: num
 interface ShipState { systems: ShipSystemDto[]; inventory: { kind: string; name: string; qty: number }[]; turn: number }
 interface TechDto { id: number; slug: string; name: string; costKind: string; costQty: number; prereqs: string[]; effect: string; state: string; missingPrereqs: string[] }
 interface MissionDto { id: number; type: string; description: string; targetSystemId: number | null; conditionKind: string | null; progressTarget: number; progress: number; rewardKind: string; rewardQty: number; state: string }
+interface EventDto { id: number; turn: number; type: string; message: string; createdAt: string }
 
 test('app survives a container restart (stack + volume persistence)', async ({ page }) => {
   test.setTimeout(180_000);
@@ -59,6 +60,11 @@ test('app survives a container restart (stack + volume persistence)', async ({ p
   const missionsBefore = (await (await page.request.get('/api/missions')).json()) as MissionDto[];
   expect(missionsBefore.length).toBeGreaterThan(0); // the board is always seeded on new game
 
+  // Event log baseline: append-only, and nothing writes between this snapshot and the restart — so the
+  // latest lines must come back byte-identical (ids included) after it.
+  const eventsBefore = (await (await page.request.get('/api/events?limit=5')).json()) as EventDto[];
+  expect(eventsBefore.length).toBeGreaterThan(0);
+
   // Restart the app container mid-run — the named DB volume must survive it.
   execSync(`docker compose ${composeArgs} restart space-wanderer`, { cwd: repoRoot, stdio: 'pipe' });
 
@@ -105,6 +111,10 @@ test('app survives a container restart (stack + volume persistence)', async ({ p
   const missionsAfter = (await (await page.request.get('/api/missions')).json()) as MissionDto[];
   expect(missionsAfter).toEqual(missionsBefore);
 
+  // Event log survived too: same latest lines, in the same order.
+  const eventsAfter = (await (await page.request.get('/api/events?limit=5')).json()) as EventDto[];
+  expect(eventsAfter).toEqual(eventsBefore);
+
   // The page itself serves again with the landing title.
   await page.goto('/');
   await expect(page.getByRole('heading', { name: 'SpaceWanderer' })).toBeVisible();