chore: gitignore .claude/ (managed by parent repo)

RIO ISHII · claude · RIO ISHII · commit 5beb1a1b3a91 · 2026-03-08T14:23:50.000+09:00
Co-Authored-By: Claude Opus 4.6 &lt;noreply@anthropic.com&gt;
diff --git a/.gitignore b/.gitignore
@@ -51,3 +51,4 @@ tags
 ./pretrain
 .idea/
 .aider*
+.claude/
