fix(main): blocking espnow rx loop and pass peer host

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

src/main.py

@@ -42,31 +42,27 @@ esp.send(BROADCAST_MAC, hello)
 print("espnow hello", len(hello), "B")
 
 
-def _on_espnow_message(msg):
+def _on_espnow_message(host, msg):
     if not msg:
         return
     if msg[0] == WIRE_MAGIC:
-        _handle_packet(msg, settings, presets)
+        _handle_packet(host, msg, settings, presets)
         return
     if msg[0:1] == b"{":
         process_data(msg, settings, presets)
 
 
-async def main():
+
-    while True:
+while True:
-        presets.tick()
     wdt.feed()
-        if esp.any():
+    while esp.any():
         host, msg = esp.recv(0)
-            if host and msg:
+        if not host or not msg:
+            continue
         print(host, len(msg), "B")
         try:
-                    _on_espnow_message(msg)
+            _on_espnow_message(host, msg)
             print(msg)
         except Exception as e:
             print("espnow rx error:", e)
-        await asyncio.sleep(0)
+    presets.tick()
-
-
-if __name__ == "__main__":
-    asyncio.run(main())