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/device-handler.test.ts

@@ -52,7 +52,7 @@ vi.mock('../../../utils/logger', () => ({
   },
 }));
 
-vi.mock('../../../utils/paths', () => ({
+vi.mock('../../../utils/paths', () => ({
   IS_DEV_ENVIRONMENT: false,
   getGeminiNexusStoragePaths: vi.fn().mockReturnValue(['/tmp/storage.json']),
   getGeminiNexusDbPaths: vi.fn().mockReturnValue(['/tmp/state.vscdb']),