refactor(api): complete fastapi migration and related features

Finish native FastAPI controllers, drop vendored microdot, and add
Wi-Fi driver runtime, beat SSE, simulated BPM, sequence playback
improvements, bridge ESP-NOW sources, UI updates, and tests.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_endpoints_pytest.py

@@ -55,6 +55,9 @@ def test_main_routes(server):
 
     with c.websocket_connect("/ws") as ws:
         ws.send_text('{"v":"1","select":["off"]}')
+        snapshot = ws.receive_json()
+        assert snapshot.get("type") == "device_tcp_snapshot"
+        assert isinstance(snapshot.get("connected_ips"), list)
 
 
 def test_settings_controller(server):
@@ -66,6 +69,9 @@ def test_settings_controller(server):
     data = resp.json()
     assert isinstance(data, dict)
     assert "wifi_channel" in data
+    assert "wifi_driver_ws_port" in data
+    assert "wifi_driver_ws_path" in data
+    assert data.get("wifi_driver_ws_path") == "/ws"
 
     resp = c.get(f"{base_url}/settings/wifi/ap")
     assert resp.status_code == 200
@@ -183,6 +189,37 @@ def test_profiles_presets_zones_endpoints(server, monkeypatch):
     assert sent_result["presets_sent"] >= 1
     assert len(bridge.sent) >= 1
 
+    wifi_sends = []
+
+    async def _fake_wifi_send(ip, msg):
+        wifi_sends.append((ip, msg))
+        return True
+
+    import util.driver_delivery as driver_delivery_mod
+
+    monkeypatch.setattr(driver_delivery_mod, "send_json_line_to_ip", _fake_wifi_send)
+    resp = c.post(
+        f"{base_url}/devices",
+        json={
+            "name": "pytest-wifi-preset",
+            "transport": "wifi",
+            "address": "192.168.50.20",
+            "mac": "203040506070",
+        },
+    )
+    assert resp.status_code == 201
+    bridge.sent.clear()
+    resp = c.post(
+        f"{base_url}/presets/send",
+        json={"preset_ids": [new_preset_id], "save": False},
+    )
+    assert resp.status_code == 200
+    assert len(bridge.sent) >= 1
+    assert len(wifi_sends) >= 1
+    assert wifi_sends[0][0] == "192.168.50.20"
+    resp = c.delete(f"{base_url}/devices/203040506070")
+    assert resp.status_code == 200
+
     resp = c.delete(f"{base_url}/presets/{new_preset_id}")
     assert resp.status_code == 200
     resp = c.get(f"{base_url}/presets/{new_preset_id}")