fix: don't show health status for exited containers

Exited containers don't run health checks, so showing "(unhealthy)" is
misleading. This fix ensures exited status displays without health
suffixes across all monitoring systems (SSH, Sentinel, services, etc.)
and at the UI layer for backward compatibility with existing data.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/Services/ContainerStatusAggregator.php

@@ -23,7 +23,7 @@ use Illuminate\Support\Facades\Log;
  * 5. Dead/Removing → degraded:unhealthy
  * 6. Paused → paused:unknown
  * 7. Starting/Created → starting:unknown
- * 8. Exited → exited:unhealthy
+ * 8. Exited → exited
  */
 class ContainerStatusAggregator
 {
@@ -52,7 +52,7 @@ class ContainerStatusAggregator
         }
 
         if ($containerStatuses->isEmpty()) {
-            return 'exited:unhealthy';
+            return 'exited';
         }
 
         // Initialize state flags
@@ -79,7 +79,6 @@ class ContainerStatusAggregator
                 }
             } elseif (str($status)->contains('exited')) {
                 $hasExited = true;
-                $hasUnhealthy = true;
             } elseif (str($status)->contains('created') || str($status)->contains('starting')) {
                 $hasStarting = true;
             } elseif (str($status)->contains('paused')) {
@@ -128,7 +127,7 @@ class ContainerStatusAggregator
         }
 
         if ($containers->isEmpty()) {
-            return 'exited:unhealthy';
+            return 'exited';
         }
 
         // Initialize state flags
@@ -157,7 +156,6 @@ class ContainerStatusAggregator
                 }
             } elseif ($state === 'exited') {
                 $hasExited = true;
-                $hasUnhealthy = true;
             } elseif ($state === 'created' || $state === 'starting') {
                 $hasStarting = true;
             } elseif ($state === 'paused') {
@@ -248,6 +246,6 @@ class ContainerStatusAggregator
         }
 
         // Priority 8: All containers exited (no restart count = truly stopped)
-        return 'exited:unhealthy';
+        return 'exited';
     }
 }