refactor: restructure pinia stores, fix calendar, add utilities

- Restructure Pinia store organization from src/stores/ to src/store/ with modular stores
- Update main.ts to use locally created Pinia instance instead of imported pre-configured one
- Fix template syntax errors in Calendar component: correct missing class spacing and incorrect closing tags
- Remove unused calendar demo/example files and documentation
- Add new constant files, token management utilities, and client configuration constants
- Add custom hooks useGoHome and useGoLogin for navigation and login logic

src/constants/speech.ts

@@ -0,0 +1,7 @@
+// App 端 yao-asdRealSpeech 使用的阿里云 DashScope 实时语音识别配置。
+// 将 apikey 填成实际的 DashScope API Key 后，App 端语音识别即可发起连接。
+export const appSpeechRecognitionOptions = {
+  apikey: "sk-2cab1c221b4b47749119d33ab991360a",
+  language_hints: ["zh"],
+  saveAudioFile: false,
+};