make bridge gone away message less alarming

bridge_master.py

@@ -576,7 +576,7 @@ def reset_static_tg(tg,ts,_tmout,system):
             
         BRIDGES[str(tg)] = bridgetemp
     except KeyError:
-        logger.exception('(%s) KeyError in reset_static_tg() - bridge gone away? TG: %s',system,tg)
+        logger.debug('(%s) reset_static_tg() skipped - bridge already removed for TG: %s',system,tg)
         return
         
 #def reset_default_reflector(reflector,_tmout,system):

docs/v1x-codex-changelog.md

@@ -106,6 +106,9 @@
   names or new report event fields.
 - Expected dashboard impact is low if the dashboard reads event fields and
   bridge entries by their existing keys.
+- Downgraded the expected stale static-bridge reset message from an error
+  traceback to a debug log when options reload finds that a bridge key has
+  already been removed.
 - Compatibility risk: `BRIDGE_SND` pickled bridge state may now include active
   TS1 `#reflector` entries. A dashboard that assumes every `#reflector` entry is
   TS2-only may need an update; a dashboard that already respects `TS`, `TGID`

tests/test_deterministic_harness.py

@@ -1627,6 +1627,18 @@ DEFAULT_DIAL_TS2: 92
             self.assertEqual(entries[1], original_b)
             self.assertEqual(entries[2], original_c)
 
+    def test_reset_static_tg_missing_bridge_logs_debug_only(self):
+        config = minimal_config(("MASTER-A",))
+
+        with DeterministicScenario(config=config) as scenario:
+            with self.assertLogs(scenario.bm.logger, level="DEBUG") as logs:
+                scenario.bm.reset_static_tg(23427, 2, 10, "MASTER-A")
+
+            output = "\n".join(logs.output)
+            self.assertIn("reset_static_tg() skipped - bridge already removed", output)
+            self.assertNotIn("ERROR", output)
+            self.assertNotIn("Traceback", output)
+
     def test_remove_bridge_system_preserves_reflector_activation_trigger(self):
         config = minimal_config(("MASTER-A", "MASTER-B"))
         add_openbridge_system(config, "OBP-1", network_id=3001)