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skills/skill-isolation-tester/CHANGELOG.md

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+# Changelog
+
+## 0.2.0
+
+- Refactored to Anthropic progressive disclosure pattern
+- Updated description with "Use PROACTIVELY when..." format
+- Removed version/author from frontmatter
+
+## 0.1.0
+
+- Initial release with three isolation modes
+- Git Worktree (fast), Docker (balanced), VM (safest)
+- Automatic risk assessment and mode detection
+- Side-effect validation and dependency analysis
+- Test report generation with actionable recommendations