Add AI stack

stacks/ai/ai-backend.nomad

@@ -0,0 +1,65 @@
+job "ai-backend" {
+  datacenters = ["Homelab-PTECH-DC"]
+  region      = "home"
+  type        = "service"
+
+  group "ollama-group" {
+    count = 1
+
+    # Pin to P52 Laptop (eGPU Host)
+    constraint {
+      attribute = "${meta.device}"
+      value     = "p52-laptop"
+    }
+
+    network {
+      port "api" { static = 11434 }
+    }
+
+    task "ollama" {
+      driver = "podman"
+
+      env {
+        OLLAMA_HOST    = "0.0.0.0"
+        OLLAMA_ORIGINS = "*"
+        
+        # CRITICAL FOR 6900XT:
+        # This tells ROCm to treat the card like a supported Pro workstation card
+        HSA_OVERRIDE_GFX_VERSION = "10.3.0"
+      }
+
+      config {
+        # Standard image (contains ROCm libraries)
+        image = "docker.io/ollama/ollama:latest"
+        ports = ["api"]
+        
+        # Required for hardware access
+        privileged = true
+
+        # Pass the graphics hardware to the container
+        volumes = [
+          "/opt/homelab/ollama:/root/.ollama",
+          "/dev/kfd:/dev/kfd",
+          "/dev/dri:/dev/dri"
+        ]
+      }
+
+      service {
+        name = "ollama"
+        port = "api"
+        
+        check {
+          type     = "http"
+          path     = "/"
+          interval = "20s"
+          timeout  = "2s"
+        }
+      }
+      
+      resources {
+        cpu    = 2000
+        memory = 8192 # 8GB System RAM (The GPU has its own VRAM)
+      }
+    }
+  }
+}