Remove automatic deployment prompt from setup script

Changes:
- scripts/setup-homelab.sh: Remove interactive deployment prompt
  - Users must now run deploy script manually
  - Simplifies both scripts (no sudo workarounds needed)
  - Clearer two-step process: setup then deploy

- Documentation updates:
  - README.md: Updated step 3-4 with manual deployment
  - docs/getting-started.md: Removed step 6 (log out), clarified steps
  - docs/manual-setup.md: Added sudo to deploy command
  - docs/troubleshooting/COMMON-ISSUES.md: Added sudo to all deploy commands

Rationale:
- Automatic deployment via 'su -' cannot work with sudo requirement
- Manual two-step process is clearer and more reliable
- Setup focuses on configuration, deploy focuses on services

README.md

@@ -98,7 +98,7 @@ The infrastructure uses Traefik for reverse proxy with automatic SSL, Authelia f
    - **Create admin user and password hash**
    - Set up directory structure and Docker networks
    
-   **Important:** Log out and back in (or run `newgrp docker`) after setup completes.
+   **Important:** If NVIDIA drivers were installed, reboot before continuing. Otherwise, proceed to step 4.
 
 4. **Run deployment script:**
    
@@ -113,7 +113,7 @@ The infrastructure uses Traefik for reverse proxy with automatic SSL, Authelia f
    - Open Dockge in your browser
    
    ```bash
-   ./scripts/deploy-homelab.sh
+   sudo ./scripts/deploy-homelab.sh
    ```
    
    **Note:** The script will prompt to optionally pre-pull images for additional stacks. This takes time but speeds up future deployments. Default is no. Wildcard certificate generation takes 2-5 minutes.