diff --git a/packages/pulse/src/guard-projection.test.ts b/packages/pulse/src/guard-projection.test.ts
index 1e2f00b..ad4abe8 100644
--- a/packages/pulse/src/guard-projection.test.ts
+++ b/packages/pulse/src/guard-projection.test.ts
@@ -6,10 +6,11 @@ import {
   clearGuardExpressionCache,
   getGuardState,
   GuardViolationError,
+  initGuardSchema,
   matchEventKindPattern,
   registerGuard,
-} from './guard-projection.js';
-import { createScopedStore } from './store.js';
+} from './guard-projection.ts';
+import { createScopedStore } from './store.ts';
 
 function mkScoped() {
   const root = mkdtempSync(join(tmpdir(), 'pulse-guard-'));
@@ -17,7 +18,10 @@ function mkScoped() {
     basePath: join(root, 'scopes'),
     objectsDir: join(root, 'objects'),
   });
-  return { root, scoped, db: scoped.scopeDatabase('g'), store: scoped.scope('g') };
+  const store = scoped.scope('g');
+  const db = scoped.scopeDatabase('g');
+  initGuardSchema(db);
+  return { root, scoped, db, store };
 }
 
 let last: ReturnType<typeof mkScoped> | null = null;
@@ -82,13 +86,13 @@ test('illegal event rejected when task already open', async () => {
     occurredAt: 1,
   });
 
-  expect(async () => {
-    await store.appendEvent({
+  await expect(
+    store.appendEvent({
       kind: 'task.created',
       key: 't1',
       occurredAt: 2,
-    });
-  }).toThrow(GuardViolationError);
+    }),
+  ).rejects.toThrow(GuardViolationError);
 });
 
 test('state transitions created → claimed → completed', async () => {