Initial commit: virtual art gallery application.

Express API with PostgreSQL, React/Vite/Three.js frontend, and locally cached artwork images.

Co-authored-by: Cursor <cursoragent@cursor.com>

.env.example

@@ -0,0 +1,7 @@
+DB_HOST=192.168.10.122
+DB_PORT=5432
+DB_USER=gallery
+DB_PASSWORD=
+DB_NAME=Gallery
+PORT=3001
+IMAGE_DIR=./data/images