feat: point the fleet at wss LiveKit room uwh-telhai

Publish and subscribe over wss://livekit.uni-wh.de:7800 and refuse
cleartext ws://. Conference room is uwh-telhai. Includes the uncommitted
encoded H.264 publish path, Rally hairpin, and KMS wall overlay.

tests/test_visca_xu.py

@@ -0,0 +1,25 @@
+from visca_xu_bridge import parse_visca, visca_frames
+
+
+def test_visca_split_frames():
+    frames, rest = visca_frames(bytes([0x81, 0x01, 0x06, 0x04, 0xFF, 0x81]))
+    assert frames == [bytes([0x81, 0x01, 0x06, 0x04, 0xFF])]
+    assert rest == bytes([0x81])
+
+
+def test_visca_stop_and_move():
+    stop = parse_visca(bytes([0x81, 0x01, 0x06, 0x01, 0x15, 0x15, 0x03, 0x03, 0xFF]))
+    assert stop["action"] == "stop"
+    left = parse_visca(bytes([0x81, 0x01, 0x06, 0x01, 0x08, 0x08, 0x01, 0x03, 0xFF]))
+    assert left == {"action": "move", "pan": -1.0, "tilt": 0.0, "zoom": 0.0}
+    up = parse_visca(bytes([0x81, 0x01, 0x06, 0x01, 0x08, 0x08, 0x03, 0x01, 0xFF]))
+    assert up["tilt"] == 1.0
+
+
+def test_visca_zoom_home_preset():
+    assert parse_visca(bytes([0x81, 0x01, 0x04, 0x07, 0x00, 0xFF]))["action"] == "zoom_stop"
+    tele = parse_visca(bytes([0x81, 0x01, 0x04, 0x07, 0x27, 0xFF]))
+    assert tele == {"action": "zoom", "zoom": 1.0}
+    assert parse_visca(bytes([0x81, 0x01, 0x06, 0x04, 0xFF]))["action"] == "home"
+    rec = parse_visca(bytes([0x81, 0x01, 0x04, 0x3F, 0x02, 0x01, 0xFF]))
+    assert rec == {"action": "preset_recall", "index": 1}