docs(website): 添加简记memo产品原型和UI设计规范文档

- 新增「简记memo」一体化小程序产品原型设计文档
- 新增简记memo完整版UI视觉设计规范和界面细节
- 添加IDEA项目配置文件.gitignore
- 创建404页面HTML文件，包含响应式布局和错误提示
- 添加关于页面HTML文件，展示品牌介绍和团队信息
- 实现AES加解密工具函数，支持请求体加密
- 添加用户协议页面基础框架

.idea/.gitignore

@@ -0,0 +1,8 @@
+# 默认忽略的文件
+/shelf/
+/workspace.xml
+# 基于编辑器的 HTTP 客户端请求
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/MarsCodeWorkspaceAppSettings.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="com.codeverse.userSettings.MarscodeWorkspaceAppSettingsState">
+    <option name="progress" value="1.0" />
+  </component>
+</project>

.idea/git_toolbox_blame.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GitToolBoxBlameSettings">
+    <option name="version" value="2" />
+  </component>
+</project>

.idea/material_theme_project_new.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="MaterialThemeProjectNewConfig">
+    <option name="metadata">
+      <MTProjectMetadataState>
+        <option name="migrated" value="true" />
+        <option name="pristineConfig" value="false" />
+        <option name="userId" value="-5e4c327f:187eae3199f:-8000" />
+        <option name="version" value="6.16.2" />
+      </MTProjectMetadataState>
+    </option>
+    <option name="titleBarState">
+      <MTProjectTitleBarConfigState>
+        <option name="overrideColor" value="false" />
+      </MTProjectTitleBarConfigState>
+    </option>
+  </component>
+</project>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/simple-memo.iml" filepath="$PROJECT_DIR$/.idea/simple-memo.iml" />
+    </modules>
+  </component>
+</project>

.idea/simple-memo.iml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="Go" enabled="true" />
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>