Add generic external ATS applier

Best-effort form filler for any career page with standard HTML forms.
Handles single-page and multi-step flows, resume upload, login wall
and CAPTCHA detection. All ATS stub handlers now delegate to generic.

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

lib/apply/workday.mjs

@@ -1,10 +1,12 @@
 /**
  * workday.mjs — Workday ATS handler
- * TODO: implement
+ * Delegates to generic handler. Workday often requires account creation,
+ * so many will return skipped_login_required — that's expected.
  */
+import { apply as genericApply } from './generic.mjs';
+
 export const SUPPORTED_TYPES = ['workday'];
 
 export async function apply(page, job, formFiller) {
-  return { status: 'skipped_external_unsupported', meta: { title: job.title, company: job.company },
-           externalUrl: job.apply_url, ats_platform: 'workday' };
+  return genericApply(page, job, formFiller);
 }