update setup guide with repo URL, Gitea registry config, and production deployment instructions

SETUP.md

@@ -1,6 +1,6 @@
 # Linear Void Setup Guide
 
-This guide covers prerequisites, environment setup, running the application locally and in production, and troubleshooting. It references the architecture documentation (`docs/architecture/README.md`) and ADRs in `docs/architecture/adr/`.
+This guide covers prerequisites, environment setup, running the application locally and in production, and troubleshooting. It references the [architecture documentation](./docs/architecture/README.md)(`docs/architecture/README.md`).
 
 ## Prerequisites
 
@@ -16,7 +16,7 @@ This guide covers prerequisites, environment setup, running the application loca
 1. **Clone the Repository** (if not already done):
 
    ```bash
-   git clone <repository-url>
+   git clone https://git.allucanget.biz/zwitschi/linearvoid.git
    cd linearvoid
    ```
 
@@ -39,6 +39,12 @@ This guide covers prerequisites, environment setup, running the application loca
    CLOUDFLARE_API_TOKEN=your-cloudflare-api-token
    MEDIA_DOMAIN=media.example.com
 
+   # Gitea Container Registry (for self-hosted Docker images)
+   GITEA_REGISTRY_URL=git.allucanget.biz
+   GITEA_USERNAME=your-gitea-username
+   GITEA_TOKEN=your-gitea-token
+   GITEA_REGISTRY_NAMESPACE=zwitschi/linearvoid
+
    # Chat / Database
    REDIS_URL=redis://redis:6379/0
    DATABASE_URL=sqlite://./data/chat.db   # or postgres://user:pass@db:5432/linearvoid
@@ -112,7 +118,8 @@ This guide covers prerequisites, environment setup, running the application loca
    - Apply the Worker from `infrastructure/cloudflare/worker.js` for advanced header management.
 3. **Deploy**:
    - Copy the project to the VPS.
-   - Run `docker compose up -d --build`.
+   - Use production compose: `docker compose -f docker-compose.prod.yml up -d`
+   - Or pull from Gitea registry: `docker compose -f docker-compose.prod.yml pull && docker compose -f docker-compose.prod.yml up -d`
    - Configure systemd to manage the Docker Compose stack.
 4. **Monitoring**: Access Grafana at the exposed port for dashboards (included in `monitoring/grafana/dashboard.json`).