[AZ-173] [AZ-174] Stream-based detection API and DB-driven AI config

Made-with: Cursor

tests/test_ai_config_from_dict.py

@@ -0,0 +1,15 @@
+def test_ai_config_from_dict_defaults():
+    from inference import ai_config_from_dict
+
+    cfg = ai_config_from_dict({})
+    assert cfg.model_batch_size == 8
+    assert cfg.frame_period_recognition == 4
+    assert cfg.frame_recognition_seconds == 2
+
+
+def test_ai_config_from_dict_overrides():
+    from inference import ai_config_from_dict
+
+    cfg = ai_config_from_dict({"model_batch_size": 4, "probability_threshold": 0.5})
+    assert cfg.model_batch_size == 4
+    assert cfg.probability_threshold == 0.5