Add dev/prod environments with TrueNAS Docker production deploy.

Split PostgreSQL into gallery_dev and gallery_prod, add Docker/Gitea deploy tooling,
SMB image sync, pgAdmin split script, dev:web on Keenetic :5173, and operator docs.

Co-authored-by: Cursor <cursoragent@cursor.com>

infra/scripts/sync-images-from-prod.ps1

@@ -0,0 +1,42 @@
+# Sync production image files from TrueNAS to dev repo.
+#
+# Usage:
+#   npm run images:sync-from-prod
+#   .\infra\scripts\sync-images-from-prod.ps1
+
+param(
+    [string]$Source = "\\192.168.10.122\Gallery\data\images",
+    [string]$Dest = (Join-Path $PSScriptRoot "..\..\data\images"),
+    [switch]$SkipConfirm
+)
+
+$ErrorActionPreference = "Stop"
+if (-not (Test-Path $Dest)) {
+    New-Item -ItemType Directory -Path $Dest -Force | Out-Null
+}
+$Dest = (Resolve-Path $Dest).Path
+
+Write-Host "Source: $Source"
+Write-Host "Dest:   $Dest"
+
+if (-not $SkipConfirm) {
+    $confirm = Read-Host "Copy all files from prod (skip older)? Type yes"
+    if ($confirm -ne "yes") {
+        Write-Host "Aborted."
+        exit 0
+    }
+}
+
+if (-not (Test-Path $Source)) {
+    Write-Error "Source not found: $Source"
+    exit 1
+}
+
+robocopy $Source $Dest /E /XO /R:2 /W:3 /NFL /NDL /NJH /NJS
+$code = $LASTEXITCODE
+if ($code -ge 8) {
+    Write-Error "robocopy failed with exit code $code"
+    exit $code
+}
+
+Write-Host "Image sync complete (robocopy exit $code)."