Trim low-value tests per review feedback

Removed ~29 tests that were adding noise rather than coverage:
- Registration boilerplate tests (16): redundant with registrations.test.ts
- Redundant role/type checks (3): consolidated into behavioral tests
- "Should not throw" tests (6): consolidated into single lifecycle test
- Constant identity tests (2): provided no safety net
- expect(true).toBe(true) test (1): replaced with actual assertion
- Weak capability test (1): removed, handler check already exists

Strengthened remaining tests:
- Resource templates test now verifies specific resource names
- File resources test now asserts registerResource was called

Test count: 124 → 95 (29 removed)
Coverage unchanged at ~71%

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

src/everything/__tests__/server.test.ts

@@ -23,25 +23,10 @@ describe('Server Factory', () => {
       expect(server.server).toBeDefined();
     });
 
-    it('should have tools capability enabled', () => {
+    it('should have an oninitialized handler set', () => {
       const { server } = createServer();
 
-      // Server should be properly configured
-      expect(server).toBeDefined();
-    });
-
-    it('should cleanup without throwing errors', () => {
-      const { cleanup } = createServer();
-
-      // Cleanup should not throw when called with a session ID
-      expect(() => cleanup('test-session')).not.toThrow();
-    });
-
-    it('should cleanup without throwing errors when sessionId is undefined', () => {
-      const { cleanup } = createServer();
-
-      // Cleanup should not throw when called without a session ID
-      expect(() => cleanup()).not.toThrow();
+      expect(server.server.oninitialized).toBeDefined();
     });
 
     it('should allow multiple servers to be created', () => {
@@ -52,11 +37,5 @@ describe('Server Factory', () => {
       expect(result2.server).toBeDefined();
       expect(result1.server).not.toBe(result2.server);
     });
-
-    it('should have an oninitialized handler set', () => {
-      const { server } = createServer();
-
-      expect(server.server.oninitialized).toBeDefined();
-    });
   });
 });