feat: add claude commands

dot_claude/commands/fix.md

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+# Fix Bug
+
+Fix a given bug or broken feature described by the user.
+
+## Process
+
+1. Reproduce the issue
+2. Write failing test that demonstrates the bug
+3. Implement the fix
+4. Verify test passes
+5. Run full test suite
+6. Review code changes
+
+## Best Practices
+
+- Keep changes focused on the specific bug
+- Include regression tests
+- Update documentation if behavior changes
+- Consider edge cases and related issues