chore: add Coolify deployment scaffolding (Dockerfiles, prod compose, git hygiene)

- apps/api/Dockerfile: build NestJS, run prisma migrate deploy on start
- apps/web/Dockerfile + nginx.conf: build Vite, serve static, proxy /api -> api
- docker-compose.coolify.yml: full prod stack (postgres, redis, minio, keycloak, api, web)
- .dockerignore / .gitignore / .gitattributes

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

apps/api/src/modules/inventory/inventory.module.ts

@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { InventoryController } from './inventory.controller';
+import { InventoryService } from './inventory.service';
+
+@Module({
+  controllers: [InventoryController],
+  providers: [InventoryService],
+})
+export class InventoryModule {}