fix(websocket): include SNR, hops, route and analyzer URL in channel message events

The SocketIO new_message emit for channel messages was missing snr,
path_len, pkt_payload and analyzer_url fields, causing messages received
via WebSocket to render without metadata until a full page refresh.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/device_manager.py

@@ -7,12 +7,16 @@ Event handlers capture incoming data and write to Database + emit SocketIO.
 """
 
 import asyncio
+import hashlib
 import json
 import logging
 import threading
 import time
 from typing import Optional, Any, Dict, List
 
+ANALYZER_BASE_URL = 'https://analyzer.letsmesh.net/packets?packet_hash='
+GRP_TXT_TYPE_BYTE = 0x05
+
 logger = logging.getLogger(__name__)
 
 
@@ -380,6 +384,20 @@ class DeviceManager:
                 return
 
             if self.socketio:
+                snr = data.get('SNR', data.get('snr'))
+                path_len = data.get('path_len')
+                pkt_payload = data.get('pkt_payload')
+
+                # Compute analyzer URL from pkt_payload
+                analyzer_url = None
+                if pkt_payload:
+                    try:
+                        raw = bytes([GRP_TXT_TYPE_BYTE]) + bytes.fromhex(pkt_payload)
+                        packet_hash = hashlib.sha256(raw).hexdigest()[:16].upper()
+                        analyzer_url = f"{ANALYZER_BASE_URL}{packet_hash}"
+                    except (ValueError, TypeError):
+                        pass
+
                 self.socketio.emit('new_message', {
                     'type': 'channel',
                     'channel_idx': channel_idx,
@@ -387,6 +405,10 @@ class DeviceManager:
                     'content': content,
                     'timestamp': ts,
                     'id': msg_id,
+                    'snr': snr,
+                    'path_len': path_len,
+                    'pkt_payload': pkt_payload,
+                    'analyzer_url': analyzer_url,
                 }, namespace='/chat')
                 logger.debug(f"SocketIO emitted new_message for ch{channel_idx} msg #{msg_id}")
 

app/static/js/app.js

@@ -908,7 +908,7 @@ function appendMessageFromSocket(data) {
         path_len: data.path_len || null,
         echo_paths: [],
         echo_snrs: [],
-        analyzer_url: null,
+        analyzer_url: data.analyzer_url || null,
         pkt_payload: data.pkt_payload || null,
         txt_type: data.txt_type || 0,
     };