refactor: patient frontend UI overhaul

- Reworked design system (variables, global styles, component CSS)
- Updated TabBar with icon-based navigation
- Redesigned HomePage, HealthHub, ServicesHub layouts
- Improved Exercise/Diet, Medication, Profile pages styling
- Simplified constants (removed emoji icons, streamlined data)
- Fixed launch.json cwd paths for frontend projects

.claude/launch.json

@@ -2,10 +2,18 @@
   "version": "0.0.1",
   "configurations": [
     {
-      "name": "健康管家 Web Demo",
+      "name": "健康管家-患者端",
       "runtimeExecutable": "cmd.exe",
       "runtimeArgs": ["/c", "D:\\nodejs\\npm.cmd", "run", "dev"],
-      "port": 5175
+      "cwd": "D:\\APP\\frontend-patient",
+      "port": 5173
+    },
+    {
+      "name": "健康管家-医生端",
+      "runtimeExecutable": "cmd.exe",
+      "runtimeArgs": ["/c", "D:\\nodejs\\npm.cmd", "run", "dev"],
+      "cwd": "D:\\APP\\frontend-doctor",
+      "port": 5174
     }
   ]
 }