fix(tests): add missing Sentry mock event fields across 14 spec files; fix test:coverage semicolon

`@sentry/sveltekit` wraps load functions and reads `event.request.method` and
`event.url.pathname`. Mock events that omitted `request` or `url` threw
`TypeError: Cannot read properties of undefined` on every invocation, silently
masking 86 test failures on main.

Two root causes fixed:
- Added `request: new Request(...)` (and `url: new URL(...)` where absent) to
  all mock event objects in 14 `*.server.spec.ts` files
- Changed `;` to `&&` in the `test:coverage` npm script so a failing server
  run propagates its exit code instead of being swallowed by the client run

All 576 server-project tests now pass.

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

frontend/src/routes/admin/groups/layout.server.spec.ts

@@ -19,14 +19,22 @@ describe('admin/groups layout load', () => {
 			{ id: 'g1', name: 'Admins', permissions: ['ADMIN'] },
 			{ id: 'g2', name: 'Editors', permissions: ['WRITE_ALL'] }
 		]);
-		const result = await load({ fetch: vi.fn() as unknown as typeof fetch });
+		const result = await load({
+			fetch: vi.fn() as unknown as typeof fetch,
+			request: new Request('http://localhost/admin/groups'),
+			url: new URL('http://localhost/admin/groups')
+		});
 		expect(result.groups).toHaveLength(2);
 		expect(result.groups[0].name).toBe('Admins');
 	});
 
 	it('returns an empty array when the API returns nothing', async () => {
 		mockApi([]);
-		const result = await load({ fetch: vi.fn() as unknown as typeof fetch });
+		const result = await load({
+			fetch: vi.fn() as unknown as typeof fetch,
+			request: new Request('http://localhost/admin/groups'),
+			url: new URL('http://localhost/admin/groups')
+		});
 		expect(result.groups).toEqual([]);
 	});
 
@@ -35,7 +43,11 @@ describe('admin/groups layout load', () => {
 		vi.mocked(createApiClient).mockReturnValue({ GET: mockGet } as ReturnType<
 			typeof createApiClient
 		>);
-		await load({ fetch: vi.fn() as unknown as typeof fetch });
+		await load({
+			fetch: vi.fn() as unknown as typeof fetch,
+			request: new Request('http://localhost/admin/groups'),
+			url: new URL('http://localhost/admin/groups')
+		});
 		expect(mockGet).toHaveBeenCalledWith('/api/groups');
 	});
 });