chore: add integration branch update scripts for release/next-gen

delete-me-update-this-integration-branch.ps1

@@ -0,0 +1,49 @@
+# delete-me-update-this-integration-branch.ps1
+# Run this script from the repo root while on the release/next-gen branch.
+# It merges the latest from each component branch to keep this integration branch current.
+# After running, review any conflicts, then commit and push.
+
+$ErrorActionPreference = 'Stop'
+
+$branchName = git rev-parse --abbrev-ref HEAD
+if ($branchName -ne 'release/next-gen') {
+    Write-Error "Must be on release/next-gen branch. Currently on: $branchName"
+    exit 1
+}
+
+# Component branches for this integration branch
+$branches = @(
+    'feature/test-workflow-engine'
+    'feature/hot-runner-protocol'
+    'feature/generic-artifact-system'
+    'feature/incremental-sync-protocol'
+    'feature/community-plugin-validation'
+    'feature/cli-support'
+)
+
+Write-Host "Fetching latest from origin..." -ForegroundColor Cyan
+git fetch origin
+
+$failed = @()
+foreach ($branch in $branches) {
+    Write-Host "`nMerging origin/$branch..." -ForegroundColor Yellow
+    $result = git merge "origin/$branch" --no-edit 2>&1
+    if ($LASTEXITCODE -ne 0) {
+        Write-Host "  CONFLICT merging $branch - resolve manually" -ForegroundColor Red
+        $failed += $branch
+        # Abort this merge so we can continue with others
+        git merge --abort
+    } else {
+        Write-Host "  Merged successfully" -ForegroundColor Green
+    }
+}
+
+if ($failed.Count -gt 0) {
+    Write-Host "`nThe following branches had conflicts and were skipped:" -ForegroundColor Red
+    $failed | ForEach-Object { Write-Host "  - $_" -ForegroundColor Red }
+    Write-Host "`nRe-run after resolving, or merge them manually:" -ForegroundColor Yellow
+    $failed | ForEach-Object { Write-Host "  git merge origin/$_" -ForegroundColor Yellow }
+} else {
+    Write-Host "`nAll branches merged successfully!" -ForegroundColor Green
+    Write-Host "Run 'git push origin release/next-gen' to update the remote." -ForegroundColor Cyan
+}