Spike 50 parts board: photos, offline mode, mobile viewer, login page

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,13 @@
+services:
+  spike-board:
+    build: .
+    container_name: spike-board
+    restart: unless-stopped
+    ports:
+      - "8095:8080"          # change 8085 if that port is taken
+    volumes:
+      - ./data:/data         # database + uploaded drawings live here; back this folder up
+    environment:
+      # Optional login. Leave both empty for no password (fine if it's only reachable on your LAN/VPN).
+      BOARD_USER: "flo"
+      BOARD_PASSWORD: "${BOARD_PASSWORD:-}"