- CaptchaService: stateless data-protected math captcha (no Google reCAPTCHA — blocked in Iran), TTL + Persian-digit tolerant; on PostJob + PostShift
- SubmissionGuard: duplicate-position detection (facility+role+date/time for shifts, facility+role+title for jobs), spam/garbage screen on title/description, double-apply prevention
- InterestService: Apply events deduped so an applicant can't apply to the same listing twice
- Verified: wrong captcha rejected, correct publishes, duplicate + garbage blocked
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
soroush.asadi