chore: document 0.2.0 release

Author: jb-thery

CHANGELOG.md

@@ -0,0 +1,11 @@
+# Changelog
+
+## 0.2.0 - 2026-06-28
+
+- Rename public product branding to Mimir while keeping the JCode Labs npm scope.
+- Add the bundled portable `mimir` agent skill.
+- Add the MCP stdio server with `mimir_status`, `mimir_search`, `mimir_ask`, and
+  `mimir_audit`.
+- Add production smoke coverage for the built CLI and MCP server.
+- Add Biome, commitlint, publint, CodeQL, Dependabot grouping, protected npm publishing,
+  and open-source contribution/security documentation.