Add packet capture service documentation to README

README.md

@@ -345,7 +345,90 @@ class MyCommand(BaseCommand):
 
 This project is licensed under the MIT License.
 
+## Packet Capture Service
+
+The bot includes an integrated packet capture service that can capture packets from the MeshCore network and publish them to MQTT brokers. This service is based on the standalone [meshcore-packet-capture](https://github.com/agessaman/meshcore-packet-capture) project.
+
+### Features
+
+- **Packet Capture**: Captures all incoming packets from the MeshCore network
+- **MQTT Publishing**: Publishes packets to one or more MQTT brokers
+- **Multiple Brokers**: Support for multiple MQTT brokers with individual configuration
+- **JWT Authentication**: Supports JWT-based authentication with on-device or Python signing
+- **Status Publishing**: Periodically publishes device status and statistics
+- **File Output**: Optional file output for packet logging
+
+### Configuration
+
+Enable the packet capture service in `config.ini`:
+
+```ini
+[PacketCapture]
+enabled = true
+output_file = packets.json          # Optional: save packets to file
+verbose = false                      # Enable verbose packet output
+debug = false                        # Enable debug logging
+
+# Owner information (for JWT authentication)
+owner_public_key = YOUR_OWNER_PUBLIC_KEY
+owner_email = your.email@example.com
+
+# Private key (optional if using on-device signing)
+private_key_path = /path/to/private_key.txt
+auth_token_method = device           # device or python
+
+# IATA airport code for topic templating
+iata = LOC
+
+# MQTT Broker Configuration (mqttN_* format)
+# Multiple brokers can be configured (mqtt1_*, mqtt2_*, etc.)
+
+# Broker 1 (Let's Mesh Analyzer - EU)
+mqtt1_server = mqtt-eu-v1.letsmesh.net
+mqtt1_port = 443
+mqtt1_transport = websockets
+mqtt1_use_tls = true
+mqtt1_use_auth_token = true
+mqtt1_token_audience = mqtt-eu-v1.letsmesh.net
+mqtt1_topic_status = meshcore/{IATA}/{PUBLIC_KEY}/status
+mqtt1_topic_packets = meshcore/{IATA}/{PUBLIC_KEY}/packets
+mqtt1_websocket_path = /mqtt
+
+# Broker 2 (Let's Mesh Analyzer - US)
+mqtt2_server = mqtt-us-v1.letsmesh.net
+mqtt2_port = 443
+mqtt2_transport = websockets
+mqtt2_use_tls = true
+mqtt2_use_auth_token = true
+mqtt2_token_audience = mqtt-us-v1.letsmesh.net
+mqtt2_topic_status = meshcore/{IATA}/{PUBLIC_KEY}/status
+mqtt2_topic_packets = meshcore/{IATA}/{PUBLIC_KEY}/packets
+mqtt2_websocket_path = /mqtt
+
+# Stats and status publishing
+stats_in_status_enabled = true
+stats_refresh_interval = 300         # Publish status every 5 minutes
+
+# JWT renewal interval (seconds, 0 = disabled)
+jwt_renewal_interval = 3600
+
+# Health check interval (seconds, 0 = disabled)
+health_check_interval = 30
+health_check_grace_period = 2
+```
+
+### MQTT Topic Templates
+
+Topic templates support placeholders:
+- `{IATA}` - Replaced with the configured IATA code
+- `{PUBLIC_KEY}` - Replaced with the device's public key
+
+### Standalone Version
+
+For a standalone packet capture solution that doesn't require the full bot, see the [meshcore-packet-capture](https://github.com/agessaman/meshcore-packet-capture) project.
+
 ## Acknowledgments
 
 - [MeshCore Project](https://github.com/meshcore-dev/MeshCore) for the mesh networking protocol
 - Some commands adapted from MeshingAround bot by K7MHI Kelly Keeton 2024
+- Packet capture service based on [meshcore-packet-capture](https://github.com/agessaman/meshcore-packet-capture) by agessaman