Add PostgreSQL-backed background worker

README.md

@@ -8,7 +8,8 @@ Beenvoice is a freelancer and small-business invoicing platform with a Next.js w
 beenvoice/
 ├── apps/
 │   ├── web/             # Next.js dashboard, tRPC API, PostgreSQL/Drizzle
-│   └── mobile/          # Expo Router mobile app and iOS widgets
+│   ├── mobile/          # Expo Router mobile app and iOS widgets
+│   └── worker/          # PostgreSQL-backed scheduler and background jobs
 ├── packages/
 │   └── domain/          # Platform-neutral shared rules and parsing
 ├── Dockerfile
@@ -32,7 +33,7 @@ bun run --filter @beenvoice/web db:push
 bun run dev
 ```
 
-`bun run dev` starts Next.js on port 3000 and Expo Metro on port 8082. For a physical iPhone, set `EXPO_PUBLIC_API_URL` in `apps/mobile/.env` to a host the device can reach and configure the web app's canonical/auth URLs consistently.
+`bun run dev` starts Next.js on port 3000, Expo Metro on port 8082, and the background worker. For a physical iPhone, set `EXPO_PUBLIC_API_URL` in `apps/mobile/.env` to a host the device can reach and configure the web app's canonical/auth URLs consistently.
 
 Useful workspace commands:
 
@@ -61,7 +62,7 @@ git pull
 ./scripts/docker-deploy.sh
 ```
 
-The root Dockerfile installs the frozen Bun workspace lockfile, builds the Next.js app under Node, and runs migrations plus the web server under Bun.
+The root Dockerfile installs the frozen Bun workspace lockfile and exposes separate `final` (web) and `worker` targets. The Compose stack starts both; the web container runs migrations before serving requests and the worker tolerates that short startup race.
 
 ## Documentation
 
@@ -69,6 +70,7 @@ The root Dockerfile installs the frozen Bun workspace lockfile, builds the Next.
 - [Web architecture](./apps/web/docs/ARCHITECTURE.md)
 - [Mobile setup](./apps/mobile/README.md)
 - [Mobile architecture](./apps/mobile/docs/ARCHITECTURE.md)
+- [Worker architecture](./apps/worker/README.md)
 - [Shared domain package](./packages/domain/README.md)
 
 ## Product concepts