style(theme): 统一应用主题样式并更新组件样式变量

- 在多个页面组件中添加动态主题样式绑定
- 将硬编码的颜色值替换为CSS变量和主题配置
- 引入主题样式计算逻辑到各个页面
- 更新优惠券、地址、订单等页面的主题适配
- 替换线性渐变背景为动态主题颜色
- 移除uni_modules组件中的$set方法调用以优化性能
- 更新README中主题色管理状态为已完成

pages/mine/set/securityCenter/editLoginPassword.vue

@@ -1,5 +1,5 @@
 <template>
-	<view class="box">
+	<view :style="themeStyle" class="box">
 		<view class="box-tips">
 			<h2 class="h2">{{ verificationTitle.title }}</h2>
 			<view class="verification">{{ verificationTitle.desc }}</view>
@@ -30,9 +30,13 @@
 </template>
 
 <script setup lang="ts">
-import { ref, reactive } from 'vue'
+import { ref, reactive, computed } from 'vue'
 import { modifyPass } from '@/api/login'
 import { md5 } from '@/utils/md5.js'
+import { useStore } from '@/store'
+import { getThemeStyle } from '@/utils/theme'
+const store = useStore()
+const themeStyle = computed(() => getThemeStyle(store.state.theme))
 
 const verificationTitle = {
 	title: '修改密码',