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/truenas-verify.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+# Post-deploy checks — run on TrueNAS shell after Custom App is running.
+set -euo pipefail
+
+PUBLIC_URL="${PUBLIC_URL:-http://gallery.mysuperlab.netcraze.pro}"
+LOCAL_URL="${LOCAL_URL:-http://127.0.0.1:5173}"
+
+echo "== Local container =="
+curl -sf -o /dev/null -w "HTTP %{http_code}\n" "${LOCAL_URL}/" || echo "FAIL: container not reachable on :5173"
+
+echo "== API bounds =="
+curl -sf "${LOCAL_URL}/api/bounds" || echo "FAIL: /api/bounds"
+
+echo "== Public URL =="
+curl -sf -o /dev/null -w "HTTP %{http_code}\n" "${PUBLIC_URL}/" || echo "FAIL: public URL not reachable"
+
+echo "== Container status =="
+docker ps --filter name=gallery-web --format '{{.Names}} {{.Status}}' || true
+
+echo "== Image volume =="
+ls -la /mnt/BasePool/Applications/Gallery/data/images/paintings 2>/dev/null | head -5 || echo "WARN: paintings dir missing"
+
+echo "Done. Open ${PUBLIC_URL}/ in a browser."