style: clear the lint and prettier findings so the gates pass

- prettier formatting across routes, components and tests (no behavior change)
- unused imports and ternary-as-statement replaced with explicit branches
- eslint: scripts/**/*.js are CommonJS, allow require() there; prettier ignores pnpm-lock.yaml

src/tests/unit/ipc/proxy-advanced-handler.test.ts

@@ -460,5 +460,5 @@ describe('Proxy Advanced Handler', () => {
       expect(result.data?.proxySetting).toBe('OPENAI_BASE_URL');
       vi.mocked(proxyAdvancedRegistry).proxyIdeConfig = null;
     });
-  });
+  });
 });