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:
-        presets.tick()
-        wdt.feed()
-        if esp.any():
-            host, msg = esp.recv(0)
-            if host and msg:
-                print(host, len(msg), "B")
-                try:
-                    _on_espnow_message(msg)
-                    print(msg)
-                except Exception as e:
-                    print("espnow rx error:", e)
-        await asyncio.sleep(0)
 
-
-if __name__ == "__main__":
-    asyncio.run(main())
+while True:
+    wdt.feed()
+    while esp.any():
+        host, msg = esp.recv(0)
+        if not host or not msg:
+            continue
+        print(host, len(msg), "B")
+        try:
+            _on_espnow_message(host, msg)
+            print(msg)
+        except Exception as e:
+            print("espnow rx error:", e)
+    presets.tick()