# Progress Heartbeat - challenger_i18n_m2_1

Last visited: 2026-10-02T02:46:15Z
Status: Completed (CONFIRM_CORRECT)

## Completed Steps
- [x] Initialized workspace metadata (DISPATCH.md, BRIEFING.md, progress.md)
- [x] Reviewed authoritative request, worker reports, and check_i18n_hygiene.py
- [x] Implemented adversarial test suite `tests/unit/test_challenger_i18n_hygiene_adversarial.py`
- [x] Verified Test 1 (Hardcoded Vietnamese UI string -> exit code 1)
- [x] Verified Test 2 (Missing key parity failure in catalog -> exit code 1)
- [x] Verified Test 3 (Dangling data-i18n key in HTML -> exit code 1)
- [x] Verified Test 4 (Production codebase -> exit code 0)
- [x] Verified Allowlisted seed dictionaries and comments do not false-positive
- [x] Verified JSON audit report export
- [x] Executed deep fuzzing & boundary stress tests (10/10 passed)
- [x] Confirmed zero regressions across 43 unit tests and code hygiene checks
- [x] Authored challenge_report.md
- [x] Authored handoff.md with CONFIRM_CORRECT verdict
- [x] Updated BRIEFING.md

## Upcoming Steps
- [ ] Send final completion message to orchestrator_13