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>

db/split-dev-prod-pgadmin.sql

@@ -0,0 +1,126 @@
+-- =============================================================================
+-- Gallery: one-time split Gallery → gallery_prod + gallery_dev
+-- =============================================================================
+--
+-- WHERE TO RUN: pgAdmin on your **dev PC** (192.168.10.70)
+--   NOT on TrueNAS shell — psql is not required on TrueNAS.
+--
+-- BEFORE YOU START (dev PC, normal PowerShell in repo folder):
+--   1. Stop Gallery if running: close terminals with dev:web / dev:server / dev:client
+--   2. Stop the prod container on TrueNAS if it already exists (Apps → gallery-web → Stop)
+--
+-- pgAdmin SETUP:
+--   1. Open pgAdmin
+--   2. Register server (if needed):
+--        Host: 192.168.10.122
+--        Port: 5432
+--        Maintenance database: postgres
+--        Username: postgres          ← must be superuser, NOT gallery
+--        Password: (your postgres password)
+--   3. In the tree: Servers → (your server) → Databases → **postgres**
+--   4. Right-click **postgres** → Query Tool
+--   5. File → Open → select this file (db/split-dev-prod-pgadmin.sql)
+--   6. Run in order: highlight STEP 0 → Execute (F5), then STEP 1, STEP 2, …
+--
+-- IMPORTANT: Run each STEP block separately (highlight one STEP section, F5).
+--            CREATE DATABASE (STEP 3) must NOT run inside a transaction with other steps.
+--
+-- AFTER SUCCESS:
+--   On dev PC (normal PowerShell, repo root):
+--     npm run migrate
+--     npm run dev:web
+--   Open http://devgallery.mysuperlab.netcraze.pro
+--
+-- =============================================================================
+
+
+-- =============================================================================
+-- STEP 0 — Pre-flight (read-only). Run this first.
+-- Expected before split: one row with datname = Gallery
+-- Expected after split:  gallery_prod and gallery_dev
+-- =============================================================================
+
+SELECT datname, pg_size_pretty(pg_database_size(datname)) AS size
+FROM pg_database
+WHERE datname IN ('Gallery', 'gallery', 'gallery_prod', 'gallery_dev')
+ORDER BY datname;
+
+
+-- =============================================================================
+-- STEP 1 — Disconnect all clients from Gallery databases
+-- Run on database: postgres
+-- =============================================================================
+
+SELECT pg_terminate_backend(pid)
+FROM pg_stat_activity
+WHERE datname IN ('Gallery', 'gallery', 'gallery_prod', 'gallery_dev')
+  AND pid <> pg_backend_pid();
+
+
+-- =============================================================================
+-- STEP 2 — Rename legacy database → gallery_prod
+-- Run on database: postgres
+-- Skip this step if STEP 0 already shows gallery_prod (split already done).
+-- Run ONLY ONE of the two ALTER lines below (whichever matches STEP 0):
+-- =============================================================================
+
+-- Use this if STEP 0 showed datname = Gallery (capital G):
+ALTER DATABASE "Gallery" RENAME TO gallery_prod;
+
+-- OR use this if STEP 0 showed datname = gallery (all lowercase) — comment out the line above:
+-- ALTER DATABASE gallery RENAME TO gallery_prod;
+
+
+-- =============================================================================
+-- STEP 3 — Clone gallery_dev from gallery_prod
+-- Run on database: postgres
+-- Skip if gallery_dev already exists in STEP 0.
+-- Takes 1–2 minutes for ~1000 paintings. Do not run twice.
+-- =============================================================================
+
+SELECT pg_terminate_backend(pid)
+FROM pg_stat_activity
+WHERE datname = 'gallery_prod'
+  AND pid <> pg_backend_pid();
+
+CREATE DATABASE gallery_dev WITH TEMPLATE gallery_prod;
+
+
+-- =============================================================================
+-- STEP 4 — Grants for app user
+-- Run on database: postgres
+-- =============================================================================
+
+GRANT ALL PRIVILEGES ON DATABASE gallery_dev TO gallery;
+GRANT ALL PRIVILEGES ON DATABASE gallery_prod TO gallery;
+
+
+-- =============================================================================
+-- STEP 5 — Verify databases (read-only)
+-- Run on database: postgres
+-- Expected: gallery_prod and gallery_dev (Gallery gone)
+-- =============================================================================
+
+SELECT datname, pg_size_pretty(pg_database_size(datname)) AS size
+FROM pg_database
+WHERE datname IN ('Gallery', 'gallery', 'gallery_prod', 'gallery_dev')
+ORDER BY datname;
+
+
+-- =============================================================================
+-- STEP 6 — Verify row count
+--
+-- *** IMPORTANT: Query Tool must be connected to gallery_dev, NOT postgres ***
+--
+-- In pgAdmin:
+--   1. Close this Query Tool tab (or ignore postgres connection)
+--   2. Tree: Servers → your server → Databases → **gallery_dev**
+--   3. Right-click **gallery_dev** → Query Tool   ← new tab, new connection
+--   4. Paste and run ONLY the two lines below (F5)
+--
+-- If current_database() is not gallery_dev, you will get "relation paintings does not exist"
+-- =============================================================================
+
+SELECT current_database() AS connected_to;   -- must show: gallery_dev
+
+SELECT count(*) AS painting_count FROM paintings;   -- expect ~1088