threshold/alerts: strip _status_code suffix from displayed metric names

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

hbd/server/threshold.py

@@ -1044,8 +1044,8 @@ class ThresholdChecker:
         # Format operator symbol
         op_symbol = threshold.operator.value
 
-        # Short metric label: strip the plugin-name prefix for readability
-        short_path = metric_path.partition(".")[2] or metric_path
+        # Short metric label: strip the plugin-name prefix and _status_code suffix
+        short_path = (metric_path.partition(".")[2] or metric_path).removesuffix("_status_code")
 
         # Use a display-friendly value (inf is the sentinel for "overdue")
         import math
@@ -1109,7 +1109,7 @@ class ThresholdChecker:
         if host is not None and not host.watched:
             eventlog(host_name, lvl, message, service="threshold")
             return
-        short_path = metric_path.partition(".")[2] or metric_path
+        short_path = (metric_path.partition(".")[2] or metric_path).removesuffix("_status_code")
         title = f"[{lvl}] {host_name}  {short_path}"
         # Strip the "metric = " prefix from message so body is just the value/detail
         prefix = short_path + " = "
@@ -1349,7 +1349,7 @@ class ThresholdChecker:
             
             # Format operator symbol
             op_symbol = threshold.operator.value
-            short_path = metric_path.partition(".")[2] or metric_path
+            short_path = (metric_path.partition(".")[2] or metric_path).removesuffix("_status_code")
 
             # Time to re-notify
             if threshold_value is not None: