feat: tabbar移除首页，发布tab指向合并后的首页

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

miniprogram/app.json

@@ -1,7 +1,6 @@
 {
   "pages": [
     "pages/home/index",
-    "pages/detect/index",
     "pages/history/index",
     "pages/inbox/index",
     "pages/profile/index",
@@ -24,12 +23,6 @@
     "list": [
       {
         "pagePath": "pages/home/index",
-        "text": "首页",
-        "iconPath": "assets/icons/home.png",
-        "selectedIconPath": "assets/icons/home-active.png"
-      },
-      {
-        "pagePath": "pages/detect/index",
         "text": "发布",
         "iconPath": "assets/icons/publish.png",
         "selectedIconPath": "assets/icons/publish-active.png"