chore: clean up .gitignore entries

Remove unused gitignore patterns for validation logs and redundant Claude settings file.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: ericyangpan

.gitignore

@@ -46,8 +46,4 @@ next-env.d.ts
 !.env.example
 
 # claude settings
-.claude/settings.local.json
-.claude/~settings.local.json
-
-# validation logs
-scripts/validated-urls.log
+.claude/settings.local.json