Improve Features page ordering and mobile UI consistency

- Fix module ordering with local state tracking for immediate UI updates
- Add tab centering when selected (scroll to center)
- Use finally block in handleApplyOrder to ensure state reset
- Add cancelOrder translation key
- Increase order card min-width for better readability
- Normalize mobile top bar height with min-height constraint
- Add display:flex to mobile title sections for proper layout

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/src/styles/theme/dimensions.css

@@ -42,12 +42,12 @@
   --height-header: 70px;
 
   /* Sidebar Dimensions */
-  /* Sidebar is positioned at left: 1rem (16px) with these widths */
-  /* margin-left = left offset (16px) + sidebar width */
-  --sidebar-width: 276px;
-  /* 16px offset + 260px width */
-  --sidebar-width-collapsed: 96px;
-  /* 16px offset + 80px width */
+  /* Sidebar is positioned at left: 0.75rem (12px) with these widths */
+  /* margin-left = left offset (12px) + sidebar width */
+  --sidebar-width: 272px;
+  /* 12px offset + 260px width */
+  --sidebar-width-collapsed: 92px;
+  /* 12px offset + 80px width */
   --sidebar-mobile-width: 280px;
 
   /* Page Layout Spacing */