ATS Duplicate Checker Extension

We need a single Manifest V3 browser extension that installs cleanly on Chrome and Microsoft Edge. The extension will detect duplicate candidates while reviewing or creating a candidate in Workday or SAP Fieldglass by comparing the candidate’s email address and phone number against existing records. Core Features Auto-scan: Automatically check the candidate when the page loads. Manual scan: Toolbar button to trigger a duplicate check on demand. Matching: Exact match on email OR phone number. Display a clear visual alert showing which field matched. Provide a deep link to the existing candidate profile, where available. Lightweight UI with a simple banner/icon badge and easy future branding. Technical Requirements Chrome + Microsoft Edge compatible Manifest V3 JavaScript or TypeScript Content scripts may extract data from Workday/Fieldglass; APIs may be used where available. No modifications to Workday or Fieldglass. All processing must remain client-side; no candidate data may be stored or sent to an external server. Clean, well-commented, maintainable code with zero console errors. Deliverables Ready-to-install .zip / .crx package for Chrome and Edge Complete source code Build/setup instructions Short README and user guide Acceptance Criteria Successful installation on both Chrome and Edge Accurate duplicate detection in a Workday and Fieldglass test tenant Correct email/phone matching Existing profile link works where available Clean code review Zero console errors Please share examples of browser extensions, Workday/Fieldglass integrations, or ATS-related projects you have previously built.