Initial MVP: local visual novel library with Ren'Py → PGVN converter

- FastAPI backend: admin bootstrap with forced credential change, admin-created
  users with one-time generated passwords, roles as permission sets
- Games and versions with content-addressed blob storage; forks copy only the
  manifest, so mods share assets with the original
- Worker: archive/RPA extraction, unrpyc for .rpyc, own .rpy parser, Python
  subset translated via ast, media converted to WebP/Opus/WebM
- React panel (library search, game page, upload, users, roles) and a
  framework-free web player with saves, history, skip/auto, transitions
- docker compose: postgres, backend, worker, nginx on a single HTTP port

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

.env.example

@@ -0,0 +1,23 @@
+# Copy to .env and change before the first start.
+
+# Long random string used to sign sessions: openssl rand -hex 32
+SECRET_KEY=change-me
+
+# Initial admin, created on first start only. Login and password must be
+# changed on first sign-in anyway.
+ADMIN_USERNAME=admin
+ADMIN_PASSWORD=admin
+
+POSTGRES_PASSWORD=pgames
+
+# Port on the VM that Caddy proxies to
+HTTP_PORT=8080
+
+# Where converted games are stored on the VM
+DATA_PATH=./data
+
+# Parallel media conversions in the worker
+WORKER_THREADS=4
+
+# Set to true only if the browser reaches the app over HTTPS (Caddy in front)
+COOKIE_SECURE=true