infra(ai-frontend): Update Nomad job hostname constraint to hp1-home

Updates the hostname constraint in the `ai-frontend` Nomad job from `hp-mini-1` to `hp1-home` for both `openwebui` and `lobechat` tasks. This correction ensures the services are pinned to the accurate target host.

Removed outdated `FIXED:` comments for cleanup.

stacks/ai/ai-frontend.nomad

@@ -7,10 +7,10 @@ job "ai-frontend" {
   group "openwebui" {
     count = 1
 
-    # Pin to HP1
+    # PIN TO HP1 (Corrected Hostname)
     constraint {
       attribute = "${attr.unique.hostname}"
-      value     = "hp-mini-1" 
+      value     = "hp1-home" 
     }
 
     network {
@@ -47,7 +47,6 @@ job "ai-frontend" {
         ]
       }
       
-      # FIXED: Expanded to multi-line to remove illegal semicolon
       resources { 
         cpu    = 1000
         memory = 1024 
@@ -59,10 +58,10 @@ job "ai-frontend" {
   group "lobechat" {
     count = 1
     
-    # Pin to HP1
+    # PIN TO HP1 (Corrected Hostname)
     constraint {
       attribute = "${attr.unique.hostname}"
-      value     = "hp-mini-1"
+      value     = "hp1-home"
     }
 
     network {
@@ -97,7 +96,6 @@ job "ai-frontend" {
         ports = ["http"]
       }
       
-      # FIXED: Ensure 1GB RAM to prevent OOM
       resources {
         cpu    = 500
         memory = 1024