fix: resolve 11 failing tests across 8 test files

- ralph-tracker: add ✓ to native todo pattern + pre-check, add configure() method
- session: remove stale message expectation from interactive endpoint test
- buffer-management: fix trim count expectations (1202 items triggers second trim)
- cli-commands: replace non-existent toStartWith with toMatch regex
- edge-cases: update error expectation for session-not-found on respawn config PUT
- ralph-integration: respawn config PUT without controller now saves as pre-config
- session-state: fix debouncer shouldFlush(0) - pass timestamp >= delayMs
- timing-utilities: attach catch handlers before advancing fake timers

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

test/timing-utilities.test.ts

@@ -196,11 +196,12 @@ describe('Timing Utilities', () => {
       const fn = vi.fn().mockRejectedValue(new Error('always fails'));
 
       const promise = retryWithBackoff(fn, 2, 100);
+      const expectation = expect(promise).rejects.toThrow('always fails');
 
       await vi.advanceTimersByTimeAsync(100); // First retry
       await vi.advanceTimersByTimeAsync(200); // Second retry
 
-      await expect(promise).rejects.toThrow('always fails');
+      await expectation;
       expect(fn).toHaveBeenCalledTimes(3); // Initial + 2 retries
     });
   });
@@ -245,9 +246,9 @@ describe('Timing Utilities', () => {
       );
 
       const wrapped = withTimeout(promise, 100);
+      const expectation = expect(wrapped).rejects.toThrow('Operation timed out');
       await vi.advanceTimersByTimeAsync(100);
-
-      await expect(wrapped).rejects.toThrow('Operation timed out');
+      await expectation;
     });
 
     it('should use custom timeout message', async () => {
@@ -256,9 +257,9 @@ describe('Timing Utilities', () => {
       );
 
       const wrapped = withTimeout(promise, 100, 'Custom message');
+      const expectation = expect(wrapped).rejects.toThrow('Custom message');
       await vi.advanceTimersByTimeAsync(100);
-
-      await expect(wrapped).rejects.toThrow('Custom message');
+      await expectation;
     });
   });