Use prisma db push instead of migrate deploy on startup

Eliminates the need to generate and commit migration files locally
before first deploy. Schema is synced directly from schema.prisma
on container start.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -48,20 +48,7 @@ PORT=3080
 
 Point NPM at `http://<host-ip>:3080` for the proxy host.
 
-### 3. Create the initial database migration
-
-Run this **once** on your local dev machine before first deploy, then commit the result:
-
-```bash
-cd server
-npm install
-# point at your local postgres or use DATABASE_URL from .env
-npm run db:migrate   # creates prisma/migrations/
-```
-
-Commit the generated `server/prisma/migrations/` folder — `prisma migrate deploy` in the container will apply it on startup.
-
-### 4. Deploy
+### 3. Deploy
 
 ```bash
 docker compose pull