feat(pii): regex-only block-output redaction + drop GLiNER/GPU image (#5697)

* chore(pii): remove GLiNER/GPU image + add spaCy-skip fast path to CPU server

* feat(pii): restrict block-output redaction to regex-only entities

* fix(pii): derive spaCy-NER set from registry + skip fast path when score_threshold set

* fix(pii): include ORGANIZATION in app-side NER set (align with server)

Author: TheodoreSpeaks