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/usage-handler.test.ts

@@ -25,7 +25,7 @@ vi.mock('../../ipc/database/cloudHandler', () => ({
   ensureDatabaseInitialized: vi.fn(),
 }));
 
-vi.mock('../../utils/paths', () => ({
+vi.mock('../../utils/paths', () => ({
   IS_DEV_ENVIRONMENT: false,
   getCloudAccountsDbPath: vi.fn(() => '/mock/db/path.sqlite'),
 }));