fix(web_viewer): store packet hash on captured channel messages

Decoded packet_stream rows had no way back to the original packet, so alternate routes could not be joined. The hash is already on routing_info; keep it in the existing JSON blob.

modules/web_viewer/integration.py

@@ -594,6 +594,12 @@ class BotIntegration:
                 'path': getattr(message, 'path', ''),
                 'is_dm': bool(getattr(message, 'is_dm', False)),
             }
+            routing_info = getattr(message, 'routing_info', None) or {}
+            if not isinstance(routing_info, dict):
+                routing_info = {}
+            packet_hash = routing_info.get('packet_hash')
+            if packet_hash and str(packet_hash).strip('0'):
+                data['packet_hash'] = packet_hash
             self._insert_packet_stream_row(json.dumps(data), 'message', "channel message")
         except Exception as e:
             self.bot.logger.debug(f"Error storing channel message for web viewer: {e}")

tests/test_web_viewer_integration.py

@@ -364,10 +364,46 @@ class TestCaptureChannelMessage:
         msg.hops = 0
         msg.path = ""
         msg.is_dm = True
+        msg.routing_info = None
         bi.capture_channel_message(msg)
         ts, data, _, *_dims = bi._write_queue.get_nowait()
         parsed = json.loads(data)
         assert parsed["is_dm"] is True
+        assert "packet_hash" not in parsed
+
+    def test_stores_packet_hash_from_routing_info(self):
+        """#270: message rows carry packet_hash so routes can link back to the packet."""
+        bi = _make_bot_integration()
+        msg = MeshMessage(
+            content="hello",
+            sender_id="aa",
+            channel="general",
+            hops=1,
+            is_dm=False,
+            routing_info={"packet_hash": "ABCDEF0123456789", "path_length": 1},
+        )
+        bi.capture_channel_message(msg)
+        _, data, row_type, *_dims = bi._write_queue.get_nowait()
+        assert row_type == "message"
+        parsed = json.loads(data)
+        assert parsed["packet_hash"] == "ABCDEF0123456789"
+
+    def test_omits_missing_or_all_zero_packet_hash(self):
+        """#270: do not invent a hash when routing_info lacks a real one."""
+        bi = _make_bot_integration()
+        for routing_info in (None, {}, {"packet_hash": ""}, {"packet_hash": "0000000000000000"}):
+            msg = MeshMessage(
+                content="hello",
+                sender_id="aa",
+                channel="general",
+                hops=0,
+                is_dm=False,
+                routing_info=routing_info,
+            )
+            bi.capture_channel_message(msg)
+            _, data, _, *_dims = bi._write_queue.get_nowait()
+            parsed = json.loads(data)
+            assert "packet_hash" not in parsed, routing_info
 
 
 # ---------------------------------------------------------------------------