routing tests, launch.configs, redirect, stats and route statistics

tests/test_dynamic_routing.py

@@ -99,6 +99,21 @@ def test_route_stats_ewma_averages_samples():
 # ---- choose_route --------------------------------------------------------
 
 
+def test_route_stats_persist_historical_hop_latency_across_restart(tmp_path):
+    db_path = str(tmp_path / "routing-stats.sqlite")
+    signature = "m|gpu[0-11]->cpu[12-23]"
+    store = RouteStatsStore(RoutingConfig(stats_half_life_seconds=1e9), db_path=db_path)
+    store.record_sample("m", signature, tokens=100, elapsed_seconds=2.0, now=100.0)
+    store.save_to_db()
+
+    restored = RouteStatsStore(RoutingConfig(stats_half_life_seconds=1e9), db_path=db_path)
+    row = restored.model_rows("m", now=101.0)[0]
+    assert row["hop_count"] == 2
+    assert row["samples"] == 1
+    assert row["tps"] == 50.0
+    assert row["latency_ms"] == 2000.0
+
+
 def _candidates_two_routes():
     fast = RouteCandidate(nodes=[], signature="m|fast", prior_tps=100.0)
     slow = RouteCandidate(nodes=[], signature="m|slow", prior_tps=50.0)