diff --git a/tools/publish.ps1 b/tools/publish.ps1
new file mode 100644
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+++ b/tools/publish.ps1
@@ -0,0 +1,185 @@
+# publish.ps1 — Build, package, and upload TINQSEngine (Godot fork) to S3
+#
+# Usage:
+#   .\tools\publish.ps1                    # Build + upload (auto-bumps patch)
+#   .\tools\publish.ps1 -Version 1.1.0     # Build + upload specific version
+#   .\tools\publish.ps1 -SkipBuild         # Package + upload existing build
+#   .\tools\publish.ps1 -DryRun            # Show what would be uploaded
+#
+# Requires: AWS CLI (configured), Python, SCons, VS 2022 Build Tools
+# Uploads to: s3://tinqs-cli-releases/godot/v<VERSION>/
+
+param(
+    [string]$Version = "",
+    [switch]$SkipBuild,
+    [switch]$DryRun,
+    [int]$Jobs = 0
+)
+
+$ErrorActionPreference = "Stop"
+$GodotRoot = Split-Path -Parent (Split-Path -Parent $MyInvocation.MyCommand.Path)
+$BinDir    = "$GodotRoot\bin"
+$VersionFile = "$GodotRoot\VERSION.tinqs"
+$S3Bucket  = "tinqs-cli-releases"
+$S3Prefix  = "godot"
+
+# --- Resolve version ---
+if ($Version -eq "") {
+    if (Test-Path $VersionFile) {
+        $current = (Get-Content $VersionFile -Raw).Trim()
+        # Auto-bump patch
+        $parts = $current.Split(".")
+        $parts[2] = [int]$parts[2] + 1
+        $Version = $parts -join "."
+    } else {
+        $Version = "1.0.0"
+    }
+}
+
+# Git info
+Push-Location $GodotRoot
+$commitHash  = git rev-parse --short HEAD 2>&1
+$commitFull  = git rev-parse HEAD 2>&1
+$branch      = git branch --show-current 2>&1
+Pop-Location
+
+Write-Host ""
+Write-Host "========================================" -ForegroundColor Cyan
+Write-Host "  TINQSEngine Publish - v$Version" -ForegroundColor Cyan
+Write-Host "========================================" -ForegroundColor Cyan
+Write-Host "  Branch: $branch" -ForegroundColor Gray
+Write-Host "  Commit: $commitHash" -ForegroundColor Gray
+Write-Host "  S3:     s3://${S3Bucket}/${S3Prefix}/v${Version}/" -ForegroundColor Gray
+Write-Host ""
+
+# --- Build ---
+if (-not $SkipBuild) {
+    Write-Host "Step 1/4: Building..." -ForegroundColor Yellow
+
+    if ($Jobs -le 0) { $Jobs = [Environment]::ProcessorCount }
+
+    Push-Location $GodotRoot
+    $buildOut = python -m SCons platform=windows target=editor module_mono_enabled=yes -j$Jobs 2>&1
+    if ($LASTEXITCODE -ne 0) {
+        Write-Host ($buildOut | Out-String) -ForegroundColor Red
+        Write-Host "ERROR: Build failed" -ForegroundColor Red
+        Pop-Location
+        exit 1
+    }
+    Pop-Location
+    Write-Host "  Build complete." -ForegroundColor Green
+} else {
+    Write-Host "Step 1/4: Build skipped." -ForegroundColor DarkGray
+}
+
+# --- Verify binaries exist ---
+$editorExe  = "$BinDir\godot.windows.editor.x86_64.mono.exe"
+$consoleExe = "$BinDir\godot.windows.editor.x86_64.mono.console.exe"
+$sharpDir   = "$BinDir\GodotSharp"
+
+foreach ($path in @($editorExe, $consoleExe, $sharpDir)) {
+    if (-not (Test-Path $path)) {
+        Write-Host "ERROR: Missing $path" -ForegroundColor Red
+        Write-Host "Run without -SkipBuild to compile first." -ForegroundColor Yellow
+        exit 1
+    }
+}
+
+$editorSize = [math]::Round((Get-Item $editorExe).Length / 1MB, 1)
+Write-Host "  Editor binary: $editorSize MB" -ForegroundColor Gray
+
+# --- Package ---
+Write-Host "Step 2/4: Packaging..." -ForegroundColor Yellow
+
+$packageName = "tinqs-godot-v${Version}-windows-x86_64-mono"
+$stageDir    = "$env:TEMP\$packageName"
+$tarFile     = "$env:TEMP\${packageName}.zip"
+
+# Clean staging
+if (Test-Path $stageDir) { Remove-Item $stageDir -Recurse -Force }
+New-Item -ItemType Directory -Path $stageDir | Out-Null
+
+# Copy binaries
+Copy-Item $editorExe  "$stageDir\godot.windows.editor.x86_64.mono.exe"
+Copy-Item $consoleExe "$stageDir\godot.windows.editor.x86_64.mono.console.exe"
+Copy-Item $sharpDir   "$stageDir\GodotSharp" -Recurse
+
+# Write manifest
+$builtAt = Get-Date -Format 'yyyy-MM-ddTHH:mm:ssZ'
+$manifestObj = @{
+    version      = $Version
+    commit       = $commitFull
+    commit_short = $commitHash
+    branch       = $branch
+    platform     = "windows"
+    arch         = "x86_64"
+    mono         = $true
+    built        = $builtAt
+    modules      = @("agent_api","agent_log","agent_events","agent_console","agent_replay","agent_vision","agent_fbx","agent_auth","agent_analytics")
+}
+$manifestObj | ConvertTo-Json -Depth 3 | Set-Content "$stageDir\manifest.json" -Encoding UTF8
+
+# Create zip
+if (Test-Path $tarFile) { Remove-Item $tarFile -Force }
+Compress-Archive -Path $stageDir -DestinationPath $tarFile -CompressionLevel Optimal
+
+$tarSize = [math]::Round((Get-Item $tarFile).Length / 1MB, 1)
+Write-Host "  Package: $tarFile -- $tarSize MB" -ForegroundColor Green
+
+# --- Upload to S3 ---
+Write-Host "Step 3/4: Uploading to S3..." -ForegroundColor Yellow
+
+$s3VersionPath = "s3://${S3Bucket}/${S3Prefix}/v${Version}/${packageName}.zip"
+$s3LatestPath  = "s3://${S3Bucket}/${S3Prefix}/latest/${packageName}.zip"
+$s3Manifest    = "s3://${S3Bucket}/${S3Prefix}/v${Version}/manifest.json"
+$s3LatestManifest = "s3://${S3Bucket}/${S3Prefix}/latest/manifest.json"
+
+if ($DryRun) {
+    Write-Host "  DRY RUN - Would upload:" -ForegroundColor Yellow
+    Write-Host "    $tarFile -> $s3VersionPath" -ForegroundColor DarkGray
+    Write-Host "    $tarFile -> $s3LatestPath" -ForegroundColor DarkGray
+    Write-Host "    manifest.json -> $s3Manifest" -ForegroundColor DarkGray
+    Write-Host "    manifest.json -> $s3LatestManifest" -ForegroundColor DarkGray
+} else {
+    # Versioned upload
+    aws s3 cp $tarFile $s3VersionPath --region eu-west-1 2>&1
+    aws s3 cp "$stageDir\manifest.json" $s3Manifest --region eu-west-1 2>&1
+    # Latest upload
+    aws s3 cp $tarFile $s3LatestPath --region eu-west-1 2>&1
+    aws s3 cp "$stageDir\manifest.json" $s3LatestManifest --region eu-west-1 2>&1
+
+    if ($LASTEXITCODE -ne 0) {
+        Write-Host "ERROR: S3 upload failed" -ForegroundColor Red
+        exit 1
+    }
+    Write-Host "  Uploaded to v$Version + latest" -ForegroundColor Green
+}
+
+# --- Update VERSION file ---
+Write-Host "Step 4/4: Updating VERSION.tinqs..." -ForegroundColor Yellow
+$Version | Set-Content $VersionFile -Encoding ASCII -NoNewline
+
+if (-not $DryRun) {
+    Push-Location $GodotRoot
+    git add VERSION.tinqs
+    git commit -m "release: v$Version" --allow-empty 2>&1 | Out-Null
+    Pop-Location
+}
+
+# --- Cleanup ---
+Remove-Item $stageDir -Recurse -Force -ErrorAction SilentlyContinue
+
+# --- Summary ---
+Write-Host ""
+Write-Host "========================================" -ForegroundColor Green
+Write-Host "  PUBLISHED v$Version" -ForegroundColor Green
+Write-Host "========================================" -ForegroundColor Green
+Write-Host "  S3:     s3://${S3Bucket}/${S3Prefix}/v${Version}/" -ForegroundColor Gray
+Write-Host "  URL:    https://${S3Bucket}.s3.eu-west-1.amazonaws.com/${S3Prefix}/v${Version}/${packageName}.zip" -ForegroundColor Gray
+Write-Host "  Commit: $commitHash" -ForegroundColor Gray
+Write-Host "  Size:   $tarSize MB" -ForegroundColor Gray
+Write-Host ""
+Write-Host "Fetch in tinqs-engine:" -ForegroundColor White
+Write-Host "  Set .engine-version to: $Version" -ForegroundColor DarkGray
+Write-Host "  Run: .\tools\fetch-engine.ps1" -ForegroundColor DarkGray
+Write-Host ""