SCANNER_PROBE_RE canonical extension — 10 evidenced uncovered scanner shapes that warn-page on sweep: .ini configs (/database.ini /config.ini /settings.ini), src/config (/settings.py /application.properties), bare creds (/credentials /aws/credentials), .json.bak backups (/config.json.bak /config/auth.json.bak /config/credentials.json.bak — the now-evidenced MARS-341 held-out .bak-JSON set). Route to Pluto canonical owner for alt-set extension (anchor .bak NOT .json per PLUTO-442 ban; Mars serves zero .ini/.py/.properties), Mars adopts byte-identical (MARS-341/342 pattern). Low volume (1x each) but recurs+pages until covered. coder-mars owns adopt-on-lock.