feat: Phase 3 - API layer + Pinia stores + app integration

- HTTP client (axios interceptors, token mgmt, typed APIs)
- Pinia stores: token, user (login/logout), app (dark mode, sidebar)
- globalConfig TS types + Window augmentation
- Vue Router (hash history, auth guard)
- Login/Home/Mine pages (Vant UI)
- Vant integration + globalConfig dev script
- Build passes (vue-tsc + vite)

package-lock.json

@@ -20,7 +20,8 @@
         "supercluster": "^8.0.1",
         "uuid": "^14.0.0",
         "vant": "^4.9.24",
-        "vue": "^3.5.34"
+        "vue": "^3.5.34",
+        "vue-router": "^4.6.4"
       },
       "devDependencies": {
         "@types/node": "^24.12.3",
@@ -5035,6 +5036,27 @@
         }
       }
     },
+    "node_modules/vue-router": {
+      "version": "4.6.4",
+      "resolved": "http://mirrors.tencentyun.com/npm/vue-router/-/vue-router-4.6.4.tgz",
+      "integrity": "sha512-Hz9q5sa33Yhduglwz6g9skT8OBPii+4bFn88w6J+J4MfEo4KRRpmiNG/hHHkdbRFlLBOqxN8y8gf2Fb0MTUgVg==",
+      "license": "MIT",
+      "dependencies": {
+        "@vue/devtools-api": "^6.6.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/posva"
+      },
+      "peerDependencies": {
+        "vue": "^3.5.0"
+      }
+    },
+    "node_modules/vue-router/node_modules/@vue/devtools-api": {
+      "version": "6.6.4",
+      "resolved": "http://mirrors.tencentyun.com/npm/@vue/devtools-api/-/devtools-api-6.6.4.tgz",
+      "integrity": "sha512-sGhTPMuXqZ1rVOk32RylztWkfXTRhuS7vgAKv0zjqk8gbsHkJ7xfFf+jbySxt7tWObEJwyKaHMikV/WGDiQm8g==",
+      "license": "MIT"
+    },
     "node_modules/vue-tsc": {
       "version": "3.3.5",
       "dev": true,