Only enable ATS types that work with generic applier

Ashby and unknown_external work. Greenhouse, Lever, Jobvite have
visible CAPTCHAs. Workday requires login. Keep those disabled until
proper handlers are built.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

job_applier.mjs

@@ -35,8 +35,7 @@ import {
 
 const DEFAULT_ENABLED_APPLY_TYPES = [
   'easy_apply', 'wellfound',
-  'greenhouse', 'lever', 'ashby', 'workday', 'jobvite',
-  'unknown_external',
+  'ashby', 'unknown_external',
 ];
 
 const isPreview = process.argv.includes('--preview');