feat: update rate limit to 1/2s, custom error message, and SEO PNG placeholder

feat: add SEO and social media metadata

docs: fix colorTo in README metadata to gray

docs: add Hugging Face Space metadata to README

feat: unified build for Hugging Face Spaces

docs: use high-quality YouTube thumbnail for demo

docs: Add video demo section to README

feat: implement project orchestration via Makefile and update legal metadata

docs: Add API usage example with curl and JSON response

feat: Initial release of Redac - PII moderation MVP

Brand: Finalize Redac_Scan identity with Shield logo, custom favicon, and responsive HUD design.

Brand: Rebrand project to Redac (MVP status).

Docs: Update README with Pro features and high-volume test instructions.

Initial commit: Privacy Gateway with Multi-language PII detection (EN/FR) and Docker support