feat: initial Jimi Gallery prototype

- Public site (Home/Artists/Exhibitions/News/About/Contact) with EN/KO/JA i18n
- Admin panel with login, CRUD, image upload, multilingual editing
- Exhibition slider/lightbox view
- FastAPI + MongoDB backend, JWT auth
- Docker Compose deployment, behind nginx at jimi.yakenator.io

docker-compose.yml

@@ -0,0 +1,31 @@
+services:
+  mongo:
+    image: mongo:7
+    restart: unless-stopped
+    volumes:
+      - mongo_data:/data/db
+    # No external port — reachable only by the api container via the default network.
+
+  api:
+    # In prod: pull the pre-built image from the gitea-hosted registry.
+    # In dev:  `docker compose up --build` uses the local Dockerfile below.
+    image: gitea.yakenator.io/yakenator/jimi-gallery:latest
+    build:
+      context: .
+      dockerfile: backend/Dockerfile
+    restart: unless-stopped
+    ports:
+      # Bound to loopback so nginx on the host is the only gateway.
+      # Host port 5891 is uncommon to avoid collisions with other dev servers.
+      - "127.0.0.1:5891:8000"
+    environment:
+      - MONGO_URL=mongodb://mongo:27017
+      - DB_NAME=jimi_gallery
+      - ADMIN_PASSWORD=${ADMIN_PASSWORD:-admin}
+      - JWT_SECRET=${JWT_SECRET:-dev-secret-change-me}
+      - STATIC_DIR=/static
+    depends_on:
+      - mongo
+
+volumes:
+  mongo_data: