refactor(ui): standardize page layout across all routes

Applied consistent centered layout (max-w-6xl mx-auto) from cliproxy page
to all pages except home page. Updated spacing to space-y-8 for uniformity.

docs/project-roadmap.md

@@ -584,6 +584,24 @@ src/types/
 - **User Experience**: One-command channel switching without data loss
 - **Backward Compatibility**: Zero breaking changes, existing workflows preserved
 
+### Version 4.5.1 - UI Layout Improvements
+**Release Date**: 2025-12-08
+
+#### UI Fixes & Improvements
+- ✅ **CLIProxy Card Padding**: Removed excessive padding from CLIProxy cards for better visual integration.
+- ✅ **CLIProxy Dashboard Layout**: Improved overall layout and styling of the CLIProxy dashboard for enhanced user experience.
+- ✅ **Dropdown Styling**: Refined dropdown component styling for consistency and readability.
+
+#### Technical Improvements
+- **Improved UI Responsiveness**: Adjustments ensure better display across various screen sizes.
+- **Enhanced User Experience**: Minor visual tweaks lead to a more polished and intuitive interface.
+
+#### Validation Results
+- **UI Rendering**: ✅ All UI components render correctly after layout adjustments.
+- **Functional Impact**: ✅ No regressions introduced, core functionality remains stable.
+
+---
+
 #### Testing Infrastructure
 - **Version Comparison Tests**: 25 unit tests for all semantic version scenarios
 - **Flag Parsing Tests**: 4 integration tests for update command flags
@@ -794,6 +812,6 @@ src/types/
 ---
 
 **Document Status**: Living document, updated with each major release
-**Last Updated**: 2025-12-07 (React Dashboard Integration Complete)
+**Last Updated**: 2025-12-08 (UI Layout Improvements)
 **Next Update**: v4.6.0 UI Enhancements Planning
 **Maintainer**: CCS Development Team