release: freeze Nexus One AI 1.0.0-rc1

specs/001-enterprise-experience/contracts/test-vectors/verification-evidence.md

@@ -0,0 +1,18 @@
+# Test-Vector Verification Evidence
+
+**Date**: 2026-07-14  
+**Scope**: Specification fixtures only; not release evidence.
+
+- Every JSON Schema, manifest, envelope, and case file parsed successfully with `jq`.
+- Canonical Workstation bytes were produced with `jq -cS`, including its single trailing newline.
+- Canonical SHA-256: `e3c8a7f5ac9c0ad1ebc29c739f32dbd3c533d8ac7378b76cca12f30a5ebd5e10`.
+- The 64-byte detached signature verified successfully with the committed Ed25519 test public key.
+- The private test key was generated only for this vector and deleted after signing.
+- `git diff --check` passed after the fixture additions.
+- Automated validation using `jsonschema` Draft 2020-12 and `cryptography` passed:
+  `Schema fixtures: PASS (Draft 2020-12)`, `Artifact signatures: PASS (4/4)`,
+  `Signature negative cases: PASS (4/4)`, and `Compatibility cases: PASS (12/12)`.
+
+This proves the current structural schemas, all four test-only artifact signatures, negative signature
+cases, and compatibility cases are internally consistent. It does not approve the signing policy,
+exercise real payload objects, or validate any production artifact.