重构: df-miniapp移入apps/(monorepo分层 crates=Rust库/apps=前端应用)

- df-miniapp/ -> apps/df-miniapp/(uni-app 工程归集前端应用层,与 crates/ Rust 库分层)
- 删冗余 apps/df-miniapp/.gitignore(根已覆盖 node_modules/dist/.DS_Store 等)
- 根 .gitignore 加 unpackage/(uni-app 编译产物,唯一根未覆盖项)
- vue-tsc 零错(移动不改代码,类型不变)

apps/df-miniapp/pages.json

@@ -0,0 +1,41 @@
+{
+  "pages": [
+    {
+      "path": "pages/chat/index",
+      "style": {
+        "navigationBarTitleText": "AI 对话",
+        "enablePullDownRefresh": false
+      }
+    },
+    {
+      "path": "pages/conversations/index",
+      "style": {
+        "navigationBarTitleText": "会话列表",
+        "enablePullDownRefresh": true
+      }
+    }
+  ],
+  "globalStyle": {
+    "navigationBarTextStyle": "white",
+    "navigationBarTitleText": "DevFlow",
+    "navigationBarBackgroundColor": "#1a1a1a",
+    "backgroundColor": "#0f0f0f",
+    "backgroundTextStyle": "light"
+  },
+  "tabBar": {
+    "color": "#999999",
+    "selectedColor": "#4a9eff",
+    "backgroundColor": "#1a1a1a",
+    "borderStyle": "black",
+    "list": [
+      {
+        "pagePath": "pages/chat/index",
+        "text": "对话"
+      },
+      {
+        "pagePath": "pages/conversations/index",
+        "text": "会话"
+      }
+    ]
+  }
+}