Trail recorder reads object-style positions — the real-world fix

Caught live on the owner's X50 mid-cleanup with temporary logging: the
recorder saw every camera state change and rejected every one, because
server-side Tasshack keeps vacuum_position as a Point OBJECT — it only
becomes a dict when serialised to the frontend, which is why the card
adapter (and MCP inspection) always saw a dict and the stub test
faithfully reproduced the same wrong assumption. getattr fallback added,
regression test pinned, diagnostic logging removed (setup line kept at
INFO).

tests_backend/test_trail_recorder.py

@@ -130,3 +130,13 @@ def test_junk_position_ignored():
 def test_unknown_source_is_noop():
     rec, _hass, _states = _rec()
     assert not rec._sample("camera.other", 1.0)
+
+
+def test_object_style_position_is_read():
+    # Tasshack in-memory attributes hold a Point OBJECT, not a dict
+    class Point:
+        def __init__(self, x, y): self.x, self.y = x, y
+    rec, _hass, states = _rec()
+    states["camera.map"] = S("idle", {"vacuum_position": Point(2020, 3096), "map_index": 1})
+    assert rec._sample("camera.map", 5.0)
+    assert rec.book.data["m1"]["current"]["points"] == [[2020.0, 3096.0]]