[tagpr] update CHANGELOG.md

Author: akaza-tagpr[bot]

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Changelog
 
+## [v0.2.2](https://github.com/akaza-im/akaza/compare/v0.2.1...v0.2.2) - 2026-01-28
+- Migrate from marisa-sys to rsmarisa by @tokuhirom in https://github.com/akaza-im/akaza/pull/343
+- Remove marisa-sys directory by @tokuhirom in https://github.com/akaza-im/akaza/pull/345
+- Add comprehensive test coverage for conversion engine by @tokuhirom in https://github.com/akaza-im/akaza/pull/346
+- Add CLAUDE.md with development guidelines by @tokuhirom in https://github.com/akaza-im/akaza/pull/347
+- Fix crash risk with invalid keyval in ibus-akaza by @tokuhirom in https://github.com/akaza-im/akaza/pull/349
+- Fix crash risk in extend_clause with empty yomi by @tokuhirom in https://github.com/akaza-im/akaza/pull/348
+- Fix panic in build_string with out-of-bounds node_selected by @tokuhirom in https://github.com/akaza-im/akaza/pull/350
+- CLAUDE.md の更新: PR 言語ポリシーとテストガイドラインの追加 by @tokuhirom in https://github.com/akaza-im/akaza/pull/352
+
 ## [v0.2.1](https://github.com/akaza-im/akaza/compare/v0.2.0...v0.2.1) - 2026-01-27
 - fix off by one for lookup table selection. by @tokuhirom in https://github.com/akaza-im/akaza/pull/257
 - Refactor _update_lookup_table by @tokuhirom in https://github.com/akaza-im/akaza/pull/261