refactor(guardrails): single Presidio image, native VIN, per-rule redaction language

- collapse the analyzer/anonymizer URLs into one PRESIDIO_URL (combined image
  serves /analyze + /anonymize)
- remove the TS VIN recognizer (vin.ts, recognizers.ts) — VIN is now native +
  multi-language in the image; validate_pii is a thin analyze→anonymize client
- trim KR_RRN/TH_TNIN from the catalog (no Korean/Thai model in the image)
- add per-rule redaction language: PII_LANGUAGES catalog drives the contract enum,
  the Data Retention rule modal, and the guardrails block dropdown; resolver +
  logger thread it through to maskPIIBatch (default en), so non-English entity
  rules (e.g. ES_NIF) actually fire instead of silently no-op'ing under en

Author: TheodoreSpeaks