refactor: 优化日历状态管理与首页输入框，添加API客户端抽象

apps/lib/features/calendar/ui/widgets/bottom_dock.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:lucide_icons/lucide_icons.dart';
+import '../../../../core/theme/design_tokens.dart';
 
 enum DockTab { todo, calendar }
 
@@ -20,8 +21,13 @@ class BottomDock extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return Container(
-      height: 61,
-      padding: const EdgeInsets.only(left: 20, right: 20, top: 12, bottom: 18),
+      height: 72,
+      padding: const EdgeInsets.only(
+        left: AppSpacing.xl,
+        right: AppSpacing.xl,
+        top: AppSpacing.md,
+        bottom: AppSpacing.lg,
+      ),
       child: Row(
         mainAxisAlignment: MainAxisAlignment.spaceBetween,
         children: [_buildToggle(), _buildHomeBtn()],
@@ -33,9 +39,9 @@ class BottomDock extends StatelessWidget {
     return Container(
       padding: const EdgeInsets.symmetric(horizontal: 5, vertical: 4),
       decoration: BoxDecoration(
-        color: const Color(0xFFFDFEFF),
-        borderRadius: BorderRadius.circular(24),
-        border: Border.all(color: const Color(0xFFDCE6F4)),
+        color: AppColors.todoToggleBg,
+        borderRadius: BorderRadius.circular(AppRadius.xxl),
+        border: Border.all(color: AppColors.todoToggleBorder),
       ),
       child: Row(
         mainAxisSize: MainAxisSize.min,
@@ -67,16 +73,18 @@ class BottomDock extends StatelessWidget {
         width: 44,
         height: 44,
         decoration: BoxDecoration(
-          color: isActive ? const Color(0xFFD6E6FF) : Colors.transparent,
-          borderRadius: BorderRadius.circular(18),
+          color: isActive ? AppColors.todoToggleActiveBg : Colors.transparent,
+          borderRadius: BorderRadius.circular(AppRadius.xl),
           border: Border.all(
-            color: isActive ? const Color(0xFFBFD6FB) : Colors.transparent,
+            color: isActive
+                ? AppColors.todoToggleActiveBorder
+                : Colors.transparent,
           ),
         ),
         child: Icon(
           icon,
           size: 20,
-          color: isActive ? const Color(0xFF1D4ED8) : const Color(0xFF334155),
+          color: isActive ? AppColors.blue600 : AppColors.slate700,
         ),
       ),
     );
@@ -89,11 +97,15 @@ class BottomDock extends StatelessWidget {
         width: 44,
         height: 44,
         decoration: BoxDecoration(
-          color: const Color(0xFFE6EEFB),
-          borderRadius: BorderRadius.circular(18),
-          border: Border.all(color: const Color(0xFFC9D8EE)),
+          color: AppColors.todoHomeBtnBg,
+          borderRadius: BorderRadius.circular(AppRadius.xl),
+          border: Border.all(color: AppColors.todoHomeBtnBorder),
+        ),
+        child: const Icon(
+          LucideIcons.home,
+          size: 20,
+          color: AppColors.slate700,
         ),
-        child: const Icon(LucideIcons.home, size: 20, color: Color(0xFF1E3A8A)),
       ),
     );
   }