feat: introduce device plugin runtime boundary

tests/test_web_console.py

@@ -6,7 +6,7 @@ from typing import Any
 
 from pytest import MonkeyPatch
 
-import k1link.web.app as web_app
+import k1link.web.xgrids_k1_facade as xgrids_backend
 
 
 def test_ble_scan_exposes_every_device_and_only_labels_likely_k1(
@@ -34,8 +34,8 @@ def test_ble_scan_exposes_every_device_and_only_labels_likely_k1(
             ]
         }
 
-    monkeypatch.setattr(web_app, "scan", fake_scan)
-    service = web_app.ConsoleService(tmp_path)
+    monkeypatch.setattr(xgrids_backend, "scan", fake_scan)
+    service = xgrids_backend.XgridsK1CompatibilityService(tmp_path)
 
     state = asyncio.run(service.scan_ble(6.0))
 
@@ -48,8 +48,8 @@ def test_ble_scan_exposes_every_device_and_only_labels_likely_k1(
 
 
 def test_viewer_settings_are_validated_and_exposed(tmp_path: Path) -> None:
-    service = web_app.ConsoleService(tmp_path)
-    request = web_app.ViewerSettingsRequest(
+    service = xgrids_backend.XgridsK1CompatibilityService(tmp_path)
+    request = xgrids_backend.ViewerSettingsRequest(
         point_size=4.0,
         color_mode="height",
         palette="viridis",