fix(ai): Adjust LobeChat health check and refine Nomad configurations

Corrected the LobeChat service health check path from `/api/health` to `/` as the root endpoint is the correct health indicator. This resolves an issue where the service was not being properly marked as healthy by Nomad.

Additionally, this commit refactors comments across both `ai-frontend` (OpenWebUI) and `lobechat` jobs within the `ai-frontend.nomad` file. Redundant or outdated comments regarding DNS "reverts," version pinning, and security notes have been removed or simplified to improve readability and reflect the stable state of the configurations. The Consul DNS configuration is now consistently marked as a "DNS Fix" rather than a temporary solution.

stacks/ai/ai-frontend.nomad

@@ -25,7 +25,7 @@ job "ai-frontend" {
       tags = ["traefik.enable=true"]
       check {
         type     = "http"
-        path     = "/health"
+        path     = "/health" # OpenWebUI actually HAS this endpoint
         interval = "20s"
         timeout  = "2s"
       }
@@ -35,7 +35,6 @@ job "ai-frontend" {
       driver = "podman"
       
       env {
-        # REVERTED: Now using Consul DNS again
         OLLAMA_BASE_URL = "http://ollama.service.consul:11434"
       }
 
@@ -45,8 +44,8 @@ job "ai-frontend" {
         volumes = [
           "/mnt/local-ssd/nomad/stacks/ai/ai-frontend/openwebui:/app/backend/data"
         ]
-
-        # --- THE FIX: Point DNS to Consul Server ---
+        
+        # DNS Fix
         dns_servers = ["192.168.1.133"]
         dns_search  = ["service.consul"]
       }
@@ -78,9 +77,12 @@ job "ai-frontend" {
       name = "lobechat"
       port = "http"
       tags = ["traefik.enable=true"]
+      
+      # --- THE FIX ---
+      # Changed from /api/health to / (Root)
       check {
         type     = "http"
-        path     = "/api/health"
+        path     = "/"  
         interval = "20s"
         timeout  = "2s"
       }
@@ -90,19 +92,15 @@ job "ai-frontend" {
       driver = "podman"
       
       env {
-        # REVERTED: Now using Consul DNS again
         OLLAMA_PROXY_URL = "http://ollama.service.consul:11434"
-        
-        # Kept this in, but Authentik will handle security later as you noted
         ACCESS_CODE      = "securepassword123"
       }
 
       config {
-        # Pinned version for stability
         image = "docker.io/lobehub/lobe-chat:v1.143.0"
         ports = ["http"]
         
-        # --- THE FIX: Point DNS to Consul Server ---
+        # DNS Fix
         dns_servers = ["192.168.1.133"]
         dns_search  = ["service.consul"]
       }