fix(k1): harden BLE discovery and bridge recovery

tests/test_viewer_diagnostics_api.py

@@ -43,11 +43,18 @@ def test_private_scanner_diagnostics_are_durable_structured_and_bounded(
         "field control failure",
         extra={
             "event_code": "k1_application_control_session_failed",
+            "operation_id": "operation-test-01",
+            "operation_stage": "ble-provisioning-write",
+            "connection_mode": "bridge",
+            "error_category": "device",
+            "error_code": "BleakGATTProtocolError",
             "reason_code": "mqtt_network_loop_failed",
             "mqtt_loop_result_code": 7,
             "mqtt_loop_result_name": "The connection was lost.",
             "mqtt_loop_phase": "post-publish-drain",
             "automatic_retry": False,
+            "side_effect_status": "unknown",
+            "network_change_attempted": True,
             "camera_source_id": "sensor.camera.right",
             "evidence_session_id": "20260728T163450Z_viewer_live",
             "activation_trigger": "application-control-scanning",
@@ -73,10 +80,17 @@ def test_private_scanner_diagnostics_are_durable_structured_and_bounded(
     assert stat.S_IMODE(target.parent.stat().st_mode) == 0o700
     assert stat.S_IMODE(target.stat().st_mode) == 0o600
     assert document["event_code"] == "k1_application_control_session_failed"
+    assert document["operation_id"] == "operation-test-01"
+    assert document["operation_stage"] == "ble-provisioning-write"
+    assert document["connection_mode"] == "bridge"
+    assert document["error_category"] == "device"
+    assert document["error_code"] == "BleakGATTProtocolError"
     assert document["reason_code"] == "mqtt_network_loop_failed"
     assert document["mqtt_loop_result_code"] == 7
     assert document["mqtt_loop_phase"] == "post-publish-drain"
     assert document["automatic_retry"] is False
+    assert document["side_effect_status"] == "unknown"
+    assert document["network_change_attempted"] is True
     assert document["camera_source_id"] == "sensor.camera.right"
     assert document["evidence_session_id"] == "20260728T163450Z_viewer_live"
     assert document["activation_trigger"] == "application-control-scanning"