refactor: improve type safety and default values in video configuration models

- Updated BranchieVideoActivity and BranchieVideoTransition constructors to use optional parameters with default values.
- Removed unused endActivityInternal property from BranchieVideoFsm.
- Enhanced TimeSpan.fromTime method to handle default values for seconds.
- Modified AppSettingsService to ensure videoDirectory is always a valid string.
- Updated BranchieVideoService to handle potential undefined values for videoDirectory.
- Improved type annotations in HomeComponent for better clarity and safety.
- Added TOML module declaration to typings for compatibility.
- Updated TypeScript configuration to enforce stricter type checking and modern JavaScript features.

Author: oldrev

.npmrc

@@ -1,2 +1,3 @@
 save=true
 save-exact=true
+auto-install-peers=true

README.md

@@ -47,12 +47,12 @@ $> pnpm install
 开发模式运行：
 
 ```bash
-$> npm start
+$> pnpm run start
 ```
 
 构建可执行文件（构建结果根据当前操作系统而定）：
 ```bash
-$> npm run electron:build
+$> pnpm run electron:build
 ```
 
 编译完成即可在 `./release` 中看到。