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/docker/build-push-lan.ps1

@@ -0,0 +1,36 @@
+# Build and push the production web image to Gitea over LAN (fast path).
+param(
+    [string]$Tag = "latest",
+    [switch]$SkipHosts,
+    [switch]$SkipBuild
+)
+
+$ErrorActionPreference = "Stop"
+$Registry = "gitea.mysuperlab.netcraze.pro"
+$Image = "$Registry/danilka/gallery-web"
+
+function Test-DockerRunning {
+    docker info 2>&1 | Out-Null
+    return $LASTEXITCODE -eq 0
+}
+
+Write-Host "=== Build + LAN push to Gitea ===" -ForegroundColor Cyan
+
+if (-not (Test-DockerRunning)) {
+    Write-Host "Docker is not running. Start Docker Desktop and retry." -ForegroundColor Red
+    exit 1
+}
+
+if (-not $SkipBuild) {
+    Write-Host ""
+    Write-Host "Building ${Image}:${Tag} ..."
+    docker build -f infra/docker/Dockerfile -t "${Image}:${Tag}" .
+    if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
+    Write-Host "Build complete." -ForegroundColor Green
+} else {
+    Write-Host "Skipping build (-SkipBuild)." -ForegroundColor Yellow
+}
+
+Write-Host ""
+& "$PSScriptRoot/push-lan.ps1" -Tag $Tag -SkipHosts:$SkipHosts
+exit $LASTEXITCODE