fix: resolve strict typecheck fallout in setup, routing, and tests

src/tools/registry.test.ts

@@ -115,12 +115,12 @@ describe('ToolRegistry', () => {
 
     it('inherits the policy from original', () => {
       const reg = new ToolRegistry();
-      const mockPolicy: ToolPolicy = {
+      const mockPolicy = {
         filterTools: vi.fn((tools) => tools),
         isAllowed: vi.fn(() => true),
-        resolveAllowedNames: vi.fn(() => new Set()),
-        getEffectiveProfile: vi.fn(() => ({ profile: 'full', source: 'explicit' })),
-      };
+        resolveAllowedNames: vi.fn(() => new Set<string>()),
+        getEffectiveProfile: vi.fn<() => 'full'>(() => 'full'),
+      } as unknown as ToolPolicy;
       reg.setPolicy(mockPolicy);
 
       const cloned = reg.clone();