style: unify code formatting and import order

- Remove trailing whitespace and normalize blank lines
- Unify string quotes and line breaks for long lines
- Sort imports alphabetically across modules

nanobot/channels/whatsapp.py

@@ -3,7 +3,6 @@
 import asyncio
 import json
 from collections import OrderedDict
-from typing import Any
 
 from loguru import logger
 
@@ -29,17 +28,17 @@ class WhatsAppChannel(BaseChannel):
         self._ws = None
         self._connected = False
         self._processed_message_ids: OrderedDict[str, None] = OrderedDict()
-    
+
     async def start(self) -> None:
         """Start the WhatsApp channel by connecting to the bridge."""
         import websockets
-        
+
         bridge_url = self.config.bridge_url
-        
+
         logger.info("Connecting to WhatsApp bridge at {}...", bridge_url)
-        
+
         self._running = True
-        
+
         while self._running:
             try:
                 async with websockets.connect(bridge_url) as ws:
@@ -49,40 +48,40 @@ class WhatsAppChannel(BaseChannel):
                         await ws.send(json.dumps({"type": "auth", "token": self.config.bridge_token}))
                     self._connected = True
                     logger.info("Connected to WhatsApp bridge")
-                    
+
                     # Listen for messages
                     async for message in ws:
                         try:
                             await self._handle_bridge_message(message)
                         except Exception as e:
                             logger.error("Error handling bridge message: {}", e)
-                    
+
             except asyncio.CancelledError:
                 break
             except Exception as e:
                 self._connected = False
                 self._ws = None
                 logger.warning("WhatsApp bridge connection error: {}", e)
-                
+
                 if self._running:
                     logger.info("Reconnecting in 5 seconds...")
                     await asyncio.sleep(5)
-    
+
     async def stop(self) -> None:
         """Stop the WhatsApp channel."""
         self._running = False
         self._connected = False
-        
+
         if self._ws:
             await self._ws.close()
             self._ws = None
-    
+
     async def send(self, msg: OutboundMessage) -> None:
         """Send a message through WhatsApp."""
         if not self._ws or not self._connected:
             logger.warning("WhatsApp bridge not connected")
             return
-        
+
         try:
             payload = {
                 "type": "send",
@@ -92,7 +91,7 @@ class WhatsAppChannel(BaseChannel):
             await self._ws.send(json.dumps(payload, ensure_ascii=False))
         except Exception as e:
             logger.error("Error sending WhatsApp message: {}", e)
-    
+
     async def _handle_bridge_message(self, raw: str) -> None:
         """Handle a message from the bridge."""
         try:
@@ -100,9 +99,9 @@ class WhatsAppChannel(BaseChannel):
         except json.JSONDecodeError:
             logger.warning("Invalid JSON from bridge: {}", raw[:100])
             return
-        
+
         msg_type = data.get("type")
-        
+
         if msg_type == "message":
             # Incoming message from WhatsApp
             # Deprecated by whatsapp: old phone number style typically: <phone>@s.whatspp.net
@@ -139,20 +138,20 @@ class WhatsAppChannel(BaseChannel):
                     "is_group": data.get("isGroup", False)
                 }
             )
-        
+
         elif msg_type == "status":
             # Connection status update
             status = data.get("status")
             logger.info("WhatsApp status: {}", status)
-            
+
             if status == "connected":
                 self._connected = True
             elif status == "disconnected":
                 self._connected = False
-        
+
         elif msg_type == "qr":
             # QR code for authentication
             logger.info("Scan QR code in the bridge terminal to connect WhatsApp")
-        
+
         elif msg_type == "error":
             logger.error("WhatsApp bridge error: {}", data.get('error'))