Complete first release candidate audit (#107)

CHANGELOG.md

@@ -0,0 +1,29 @@
+# Changelog
+
+All notable changes to MetaCrate are recorded here. The project follows
+[Semantic Versioning](https://semver.org/); the public compatibility surface is
+also fixed by `api/SEMVER-BASELINE.json`.
+
+## 0.0.1 - release candidate
+
+### Added
+
+- Native Rust implementations for the mapped LibreMetaverse types, structured
+  data, imaging, meshing, wire protocol, client/network lifecycle, world and
+  social managers, rendering, RLV, LSL, voice adapters, and programs.
+- Deterministic compatibility, fake-grid, concurrency, performance, API,
+  documentation, dependency, provenance, package, and native artifact gates.
+- Explicit OpenSim dedicated-account validation with sanitized nine-stage
+  evidence and reversible side-effect confirmations.
+
+### Release requirements
+
+- Normal development and release validation use Rust 1.97.1. Rust 1.96.0 is
+  retained only as the declared minimum-supported-version compatibility gate.
+- The release candidate is not approved while
+  `metacrate-ci-matrix release-candidate-audit` reports any blocker. Fuzz-smoke
+  is temporarily deferred by explicit project direction; every other gate is
+  fail-closed.
+- No artifact-signing identity is configured for 0.0.1. Checked SHA-256 values,
+  immutable Gitea build artifacts, license notices, and provenance manifests are
+  therefore mandatory.