Add PatchWitness to point-of-use validations - #96
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Why it belongs here
PatchWitness is a point-of-use validation layer for code changes produced by AI coding agents. It independently derives the diff from Git, loads policy from a trusted base revision so a patch cannot weaken its own rules, runs real repository checks, blocks protected workflow/control-plane edits, and emits a portable Change Passport with offline hash verification.
The project is Apache-2.0, provider-neutral, and ships as a CLI, Python SDK, MCP interface, and GitHub Marketplace Action with JSON/SARIF output.
Scope of this change
Disclosure: I maintain PatchWitness. I am submitting it because its trusted-base policy and independently verifiable evidence fit this list's attestation and point-of-use model; I am not claiming third-party adoption or endorsement.
Repository: https://github.com/pangxueyuan2-creator/patchwitness
Reproducible demo: https://github.com/pangxueyuan2-creator/patchwitness/tree/main/demo
GitHub Action: https://github.com/marketplace/actions/patchwitness-gate