add backend

scripts/start-backend-dev.ps1

@@ -0,0 +1,37 @@
+$ErrorActionPreference = 'Stop'
+
+$root = Split-Path -Parent $PSScriptRoot
+$javaExe = 'C:\Program Files\Java\jdk-22\bin\java.exe'
+$out = Join-Path $root 'backend-dev.out.log'
+$err = Join-Path $root 'backend-dev.err.log'
+
+if (Test-Path $out) {
+    Remove-Item $out -Force
+}
+if (Test-Path $err) {
+    Remove-Item $err -Force
+}
+
+$proc = Start-Process `
+    -FilePath $javaExe `
+    -ArgumentList '-jar', 'backend/target/yoyuzh-portal-backend-0.0.1-SNAPSHOT.jar', '--spring.profiles.active=dev' `
+    -WorkingDirectory $root `
+    -PassThru `
+    -RedirectStandardOutput $out `
+    -RedirectStandardError $err
+
+Start-Sleep -Seconds 10
+
+try {
+    $resp = Invoke-WebRequest -Uri 'http://127.0.0.1:8080/swagger-ui.html' -UseBasicParsing -TimeoutSec 5
+    Write-Output "PID=$($proc.Id)"
+    Write-Output "STATUS=$($resp.StatusCode)"
+    Write-Output 'URL=http://127.0.0.1:8080/swagger-ui.html'
+}
+catch {
+    Write-Output "PID=$($proc.Id)"
+    Write-Output 'STATUS=STARTED_BUT_NOT_READY'
+    if (Test-Path $err) {
+        Get-Content -Tail 40 $err
+    }
+}