v0.6.0

Changelog

新機能

• d263acb: feat: add tests, dev scripts, CI, insights testdata and spec template (@thomas0124)

バグ修正

• b763bbd: fix: move all .claude/rules to ralph/ subdir, update content to yoshpy-dev latest (@thomas0124)
• 6ff65d0: fix: wire upgrade v2 engine and remove unused dead code (@thomas0124)