fix: resolve all test failures after vitest 2.x upgrade

- Attach rejects handler before advancing timers (vitest 2.x strict mode)
- Fix FK constraint cleanup order in test setup
- Fix 7-char prefix matching test data
- Add INSERT OR IGNORE for deposit concurrency safety
- Add secondary ORDER BY for deterministic transaction ordering
- Update summary-service test assertions to match current prompt

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/optimistic-lock.test.ts

@@ -117,6 +117,8 @@ describe('executeWithOptimisticLock', () => {
 
       // Start operation with 5 max retries
       const promise = executeWithOptimisticLock(mockDb, mockOperation, 5);
+      // Attach error handler before advancing timers (vitest 2.x strict mode)
+      const expectPromise = expect(promise).rejects.toThrow('처리 중 동시성 충돌이 발생했습니다');
 
       // Advance through all retry delays
       await vi.advanceTimersByTimeAsync(100); // 1st retry
@@ -125,7 +127,7 @@ describe('executeWithOptimisticLock', () => {
       await vi.advanceTimersByTimeAsync(800); // 4th retry
 
       // Wait for final rejection
-      await expect(promise).rejects.toThrow('처리 중 동시성 충돌이 발생했습니다');
+      await expectPromise;
       expect(mockOperation).toHaveBeenCalledTimes(5);
     });
   });
@@ -136,15 +138,17 @@ describe('executeWithOptimisticLock', () => {
 
       // Start operation (default 3 retries)
       const promise = executeWithOptimisticLock(mockDb, mockOperation);
+      // Attach error handler before advancing timers (vitest 2.x strict mode)
+      const expectPromise = expect(promise).rejects.toThrow(
+        '처리 중 동시성 충돌이 발생했습니다. 다시 시도해주세요. (3회 재시도 실패)'
+      );
 
       // Advance through all retry delays
       await vi.advanceTimersByTimeAsync(100); // 1st retry
       await vi.advanceTimersByTimeAsync(200); // 2nd retry
 
       // Wait for final rejection
-      await expect(promise).rejects.toThrow(
-        '처리 중 동시성 충돌이 발생했습니다. 다시 시도해주세요. (3회 재시도 실패)'
-      );
+      await expectPromise;
       expect(mockOperation).toHaveBeenCalledTimes(3);
     });