Free2PA v0.2.1 - OpenAI Build Week

Final Developer Tools submission release. The Azure page is a reference verifier and judge sandbox; the toolkit in this repository is the product developers install and integrate.\n\n- Installable CLI for publisher identity, signing, trust admission, verification, scanning, auditing, and serving\n- Browser, HTTP, MCP, and reusable CI action surfaces\n- GPT-5.6 behavioral auditing with Azure managed identity support\n- 13 automated tests and a verified 35 KB package\n- Read-only public judge demo and explicit Build Week provenance record\n\nThe attached tarball was installed in an empty directory and passed key generation, signing, trust admission, and verification. Public Ubuntu CI passed on the exact tagged commit: https://github.com/kilroyblockchain/free2pa-devtool/actions/runs/29641643306\n\nJudge guide: https://github.com/kilroyblockchain/free2pa-devtool/blob/main/docs/JUDGE_GUIDE.md\n\nBackup demo video: https://github.com/kilroyblockchain/free2pa-devtool/releases/download/v0.2.1/Free2PA-Build-Week-demo.mp4