fix test

scripts/tests/generate-settings-doc.test.ts

@@ -17,6 +17,7 @@ vi.mock('fs', () => ({
 
 describe('generate-settings-doc', () => {
   it('keeps documentation in sync in check mode', async () => {
+    vi.stubEnv('GENERATE_DOCS', 'true');
     const previousExitCode = process.exitCode;
     try {
       process.exitCode = 0;
@@ -24,6 +25,7 @@ describe('generate-settings-doc', () => {
       expect(process.exitCode).toBe(0);
     } finally {
       process.exitCode = previousExitCode;
+      vi.unstubAllEnvs();
     }
   });
 });