ci(workflows): 添加Windows构建修复步骤到CI流程

添加NuGet安装、长路径支持、清理构建缓存等步骤
确保Windows环境下的Flutter构建能够成功执行

.gitea/workflows/docker.yml

@@ -229,16 +229,77 @@ jobs:
         $env:PATH = "C:\flutter\bin;$env:PATH"
         dart run build_runner build --delete-conflicting-outputs
 
-    - name: Build Windows Debug
+    - name: Install NuGet
+      shell: powershell
+      run: |
+        Write-Host "Installing NuGet..."
+        
+        # Check if NuGet is already available
+        $nugetPath = Get-Command nuget -ErrorAction SilentlyContinue
+        if ($nugetPath) {
+          Write-Host "NuGet already installed: $($nugetPath.Source)"
+          return
+        }
+        
+        # Download NuGet CLI
+        Write-Host "Downloading NuGet CLI..."
+        try {
+          Invoke-WebRequest -Uri "https://dist.nuget.org/win-x86-commandline/latest/nuget.exe" -OutFile "C:\nuget.exe" -TimeoutSec 120
+        } catch {
+          Write-Host "Download failed, trying alternative..."
+          # Try alternative download
+          Invoke-WebRequest -Uri "https://dist.nuget.org/win-x86-commandline/v6.7.0/nuget.exe" -OutFile "C:\nuget.exe" -TimeoutSec 120
+        }
+        
+        # Add to PATH
+        $env:PATH = "C:\;$env:PATH"
+        Add-Content -Path $env:GITHUB_PATH -Value "C:\"
+        
+        # Verify installation
+        $nugetVersion = C:\nuget.exe help | Select-String -Pattern "NuGet Version" | Select-Object -First 1
+        Write-Host "NuGet installed: $nugetVersion"
+
+    - name: Fix long paths
+      shell: powershell
+      run: |
+        Write-Host "Enabling long path support..."
+        
+        # Enable long paths in Windows
+        Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\FileSystem" -Name "LongPathsEnabled" -Value 1 -Type DWORD -Force
+        
+        # Also set for current user
+        Set-ItemProperty -Path "HKCU:\Software\Microsoft\Windows\CurrentVersion\AppModel\StateRepository\Cache\Package\Data\" -Name "LongPathsEnabled" -Value 1 -Type DWORD -Force -ErrorAction SilentlyContinue
+        
+        Write-Host "Long path support enabled"
+
+    - name: Clean build cache
       shell: powershell
       run: |
         $env:PATH = "C:\flutter\bin;$env:PATH"
+        Write-Host "Cleaning build cache..."
+        flutter clean
+        
+        Write-Host "Removing old build directories..."
+        if (Test-Path "build") {
+          Remove-Item -Path "build" -Recurse -Force
+        }
+        if (Test-Path "windows") {
+          Remove-Item -Path "windows" -Recurse -Force
+        }
+        
+        Write-Host "Recreating Windows project..."
+        flutter create --platforms=windows .
+
+    - name: Build Windows Debug
+      shell: powershell
+      run: |
+        $env:PATH = "C:\flutter\bin;C:\;$env:PATH"
         flutter build windows
 
     - name: Build Windows Release
       shell: powershell
       run: |
-        $env:PATH = "C:\flutter\bin;$env:PATH"
+        $env:PATH = "C:\flutter\bin;C:\;$env:PATH"
         flutter build windows --release
 
     - name: Upload Debug build artifacts