feat: add seed.js for database seeding functionality

Dockerfile

@@ -15,14 +15,6 @@ ENV NEXT_TELEMETRY_DISABLED=1
 # Generate Prisma client (reads prisma/schema.prisma + prisma.config.ts)
 RUN npx prisma generate
 
-# Compile seed.ts → seed.js (esbuild ships with Next.js)
-RUN node_modules/.bin/esbuild prisma/seed.ts \
-    --bundle \
-    --platform=node \
-    --format=cjs \
-    --packages=external \
-    --outfile=prisma/seed.js
-
 # Build Next.js — produces .next/standalone (set in next.config.mjs)
 RUN npm run build