update(k8s): add granularity

app/routes/k8s.py

@@ -68,15 +68,24 @@ def fetch_k8s_data_with_usage():
 
 def calculate_time_on_duty(creation_timestamp):
     """
-    Calculate the time on duty in hours or days from the creation timestamp.
+    Calculate the time on duty in hours, days, or minutes from the creation timestamp.
     """
     now = datetime.now(timezone.utc)
     delta = now - creation_timestamp
 
-    # If less than a day, return hours; otherwise, return days
+    # If less than an hour, return minutes
+    if delta.days < 1 and delta.seconds < 3600:
+        minutes = delta.seconds // 60
+        return f"{minutes} minutes" if minutes > 1 else "less than a minute"
+    
+    # If less than a day, return hours
     if delta.days < 1:
-        return f"{delta.seconds // 3600} hours"
-    return f"{delta.days} days"
+        hours = delta.seconds // 3600
+        return f"{hours} hours" if hours > 1 else "1 hour"
+
+    # Otherwise, return days
+    return f"{delta.days} days" if delta.days > 1 else "1 day"
+
 
 def convert_memory_to_gb(memory):
     """