[#1] Regenerate documentation PDFs and delivery zip package

docs/Operator_Installation_Guide.md

@@ -67,6 +67,16 @@ vboxmanage storageattach "FoodAI-AI-Node" --storagectl "SATA Controller" --port
 vboxmanage startvm "FoodAI-AI-Node" --type headless
 ```
 
+### 3.4: Native Physical Unix/Linux Server (No Virtualization)
+For a native physical installation directly on the hardware (bare-metal Ubuntu Server):
+1. Install Ubuntu Server 22.04 LTS or 24.04 LTS on the physical machine.
+2. Ensure SSH is installed and running:
+   ```bash
+   sudo apt update && sudo apt install -y openssh-server
+   sudo systemctl enable --now ssh
+   ```
+3. Configure a static IP address and ensure the host firewall allows traffic on the required ports (e.g. 80, 8502, 3306, 8081).
+
 ---
 
 ## 4. Secure Authentication & SSH Exchange