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_video_encoder_recycle.py

@@ -0,0 +1,52 @@
+"""Publisher must not catch up frames and must recycle native encoders on RSS."""
+from latency import (
+    next_video_capture,
+    should_recycle_encoders,
+)
+
+
+def test_next_video_capture_sleeps_until_due():
+    capture, due = next_video_capture(now=10.0, due=10.05, period=1 / 30)
+    assert capture is False
+    assert due == 10.05
+
+
+def test_next_video_capture_fires_on_due_and_advances_one_period():
+    capture, due = next_video_capture(now=10.0, due=10.0, period=0.05)
+    assert capture is True
+    assert due == 10.05
+
+
+def test_next_video_capture_skips_catchup_when_behind():
+    # 80 ms late at 30 fps would be two extra ticks if we kept adding period.
+    capture, due = next_video_capture(now=10.08, due=10.0, period=1 / 30)
+    assert capture is True
+    assert due == 10.08 + (1 / 30)
+
+
+def test_should_recycle_when_anon_rss_exceeds_limit_and_interval_elapsed():
+    assert should_recycle_encoders(
+        rss_anon_kb=4_000_000, limit_kb=3_000_000,
+        now=100.0, last_recycle_at=0.0, min_interval_s=60.0,
+    ) is True
+
+
+def test_should_not_recycle_below_limit():
+    assert should_recycle_encoders(
+        rss_anon_kb=1_000_000, limit_kb=3_000_000,
+        now=100.0, last_recycle_at=0.0, min_interval_s=60.0,
+    ) is False
+
+
+def test_should_not_recycle_inside_min_interval():
+    assert should_recycle_encoders(
+        rss_anon_kb=5_000_000, limit_kb=3_000_000,
+        now=100.0, last_recycle_at=80.0, min_interval_s=60.0,
+    ) is False
+
+
+def test_should_not_recycle_when_limit_disabled():
+    assert should_recycle_encoders(
+        rss_anon_kb=9_000_000, limit_kb=0,
+        now=100.0, last_recycle_at=0.0, min_interval_s=60.0,
+    ) is False