Fix Windows release upload: use curl for streaming large file uploads

Invoke-RestMethod loads entire files into memory, causing connection
failures on 360MB+ installer files. Switch to curl which streams
the upload.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/build-windows.yml

@@ -128,12 +128,17 @@ jobs:
               }
             } catch {}
 
-            try {
-              Invoke-RestMethod -Uri "${REPO_API}/releases/${RELEASE_ID}/assets?name=${encodedName}" `
-                -Method Post -Headers $Headers -ContentType "application/octet-stream" `
-                -InFile $_.FullName
+            # Use curl for streaming upload (Invoke-RestMethod fails on large files)
+            $uploadUrl = "${REPO_API}/releases/${RELEASE_ID}/assets?name=${encodedName}"
+            $result = curl.exe --fail --silent --show-error `
+              -X POST `
+              -H "Authorization: token $env:BUILD_TOKEN" `
+              -H "Content-Type: application/octet-stream" `
+              --data-binary "@$($_.FullName)" `
+              "$uploadUrl" 2>&1
+            if ($LASTEXITCODE -eq 0) {
               Write-Host "Upload successful: ${filename}"
-            } catch {
-              Write-Host "WARNING: Upload failed for ${filename}: $_"
+            } else {
+              Write-Host "WARNING: Upload failed for ${filename}: ${result}"
             }
           }