feat #avalnonia项目类型启动速度过慢

[gaoconggit]

相对winform项目类型，avalnonia启动速度太慢 @claude 优化一下启动速度

[claude]

Claude finished @gaoconggit's task —— View job • claude/issue-68-20251027-1522 • Create PR ➔

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Avalonia Startup Performance Optimizations Complete

I've successfully optimized the SharpPad.Desktop startup performance by addressing multiple bottlenecks.

Optimizations Implemented:

1. WebServerManager (SharpPad.Desktop/Services/WebServerManager.cs:26-127)

• Parallel path resolution to reduce I/O blocking
• Async configuration loading integrated into Host pipeline
• Disabled config hot-reload during startup (reduces file watcher overhead)
• Added Kestrel optimization to disable server headers
• Eliminated redundant file system checks

2. InstanceManager (SharpPad.Desktop/Services/InstanceManager.cs:8-75)

• Added port allocation caching to avoid repeated process enumeration
• Simplified process counting logic
• Reduced lock contention with early cache checks

3. MainWindowViewModel (SharpPad.Desktop/ViewModels/MainWindowViewModel.cs:69-111)

• Removed unnecessary Task.Run wrapper for direct async initialization
• Improved progress feedback timing
• Better async flow for server startup

4. App Initialization (SharpPad.Desktop/App.axaml.cs:19-49)

• Moved WebView initialization to background thread to avoid blocking UI
• Optimized ViewModel creation order to start server earlier

Expected Performance Improvements:

• Faster initial window display: UI thread no longer blocked by WebView initialization
• Reduced startup latency: Parallel path resolution and configuration loading
• Less overhead: Cached port allocation eliminates repeated process scans
• Optimized server startup: Streamlined Kestrel configuration and deferred config hot-reload

Todo List

• Analyze current SharpPad.Desktop startup code
• Identify performance bottlenecks
• Implement startup optimizations
• Test compilation
• Commit and push changes

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