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+# Implementation for CD-1234
+
+## Summary
+Add dark mode support
+
+## Description
+Add dark mode support
+
+Implement dark mode toggle for the application. Users should be able to switch between light and dark themes.
+
+Requirements:
+- Add theme toggle button in header
+- Store theme preference in localStorage
+- Apply dark theme styles to all components
+- Ensure good contrast ratios for accessibility
+
+## Generated Code
+```
+Using mock Claude CLI responses for AI functionality
+
+```