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_encode_daemon_pipeline.py

@@ -0,0 +1,44 @@
+from encode_daemon import _one_enc
+
+
+def test_h264_uses_igpu_va_not_x264_or_arc_av1():
+    cmd = _one_enc(640, 368, 30, 2000, 3, 4, "h264", render="/dev/dri/renderD129")
+    s = " ".join(cmd)
+    assert "varenderD129h264enc" in cmd
+    assert "x264enc" not in cmd
+    assert "vaav1enc" not in cmd
+    assert "format=nv12" in s
+    assert "key-int-max=1" in cmd
+    assert "b-frames=0" in cmd
+
+
+def test_h264_factory_follows_render_node():
+    cmd = _one_enc(640, 368, 30, 2000, 3, 4, "h264", render="/dev/dri/renderD128")
+    assert "varenderD128h264enc" in cmd
+
+
+def test_c920_stays_fast_gop1():
+    cmd = _one_enc(640, 368, 30, 2000, 3, 4, "h264", render="/dev/dri/renderD129")
+    assert "bitrate=2000" in cmd
+    assert "key-int-max=1" in cmd
+    assert "target-usage=7" in cmd
+
+
+def test_rally_1080_uses_higher_bitrate_and_no_motion_trails():
+    cmd = _one_enc(1920, 1088, 30, 2000, 3, 4, "h264", render="/dev/dri/renderD129")
+    assert "bitrate=20000" in cmd
+    assert "key-int-max=1" in cmd
+    assert "target-usage=2" in cmd
+    assert "b-frames=0" in cmd
+
+
+def test_rally_bitrate_rollbacks_via_hi_kbps():
+    cmd = _one_enc(1920, 1088, 30, 2000, 3, 4, "h264",
+                   render="/dev/dri/renderD129", hi_kbps=12000)
+    assert "bitrate=12000" in cmd
+
+
+def test_av1_stays_on_arc_vaav1enc():
+    cmd = _one_enc(640, 368, 30, 2000, 3, 4, "av1")
+    assert "vaav1enc" in cmd
+    assert "varenderD129h264enc" not in cmd