Clarify tunnel data channel handling in bridge mode

- Updated documentation to clarify that in ALL modes, wsssht handles tunnel control channel messages
- Clarified that in bridge mode specifically, tunnel data channel messages are NOT handled by wsssht
- Instead, raw tunnel data is communicated through stdin/stdout for external processing
- Updated README.md, DOCUMENTATION.md, CHANGELOG.md, and TODO.md with this clarification
- This ensures proper understanding of bridge mode's data handling architecture

CHANGELOG.md

@@ -18,6 +18,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - Real-time JSON status updates during tunnel establishment
   - Command processing from stdin with JSON responses
   - Structured error reporting and connection status
+  - **Tunnel control channel messages are handled by wsssht**
+  - **Tunnel data channel messages are NOT handled by wsssht** - instead, raw data is communicated through stdin/stdout for external processing
   - Perfect for programmatic integration and automation
 - **Script Mode Implementation**: JSON protocol for scripting
   - Periodic status updates (every 30 seconds)

DOCUMENTATION.md

@@ -73,8 +73,11 @@ wsssht --bridge --clientid myclient --wssshd-host example.com
 Provides a JSON-based interface for programmatic integration:
 - Receives JSON commands from stdin
 - Sends JSON status updates and responses to stdout
+- **Tunnel control channel messages are handled by wsssht**
+- **Tunnel data channel messages are NOT handled by wsssht** - instead, raw data is communicated through stdin/stdout for external processing
 - Perfect for integration with other tools and automation frameworks
 - Structured error reporting and connection status updates
+- External applications can directly handle the data stream
 
 ### Script Mode
 ```bash

README.md

@@ -232,6 +232,8 @@ Suppresses all informational output, perfect for scripts and automation.
 ```
 JSON-based communication over stdin/stdout for programmatic use. Receives JSON commands from stdin and sends JSON responses to stdout.
 
+**Important**: In bridge mode, wsssht handles tunnel control channel messages but does NOT handle tunnel data channel messages. Instead, raw tunnel data is communicated through stdin/stdout for external processing by the calling application.
+
 ### Script Mode
 ```bash
 ./wsssh --script --clientid myclient --wssshd-host example.com

TODO.md

@@ -11,6 +11,8 @@
   - Real-time JSON status updates during tunnel establishment
   - Command processing from stdin with JSON responses
   - Structured error reporting and connection status
+  - **Tunnel control channel messages are handled by wsssht**
+  - **Tunnel data channel messages are NOT handled by wsssht** - instead, raw data is communicated through stdin/stdout for external processing
   - Perfect for programmatic integration and automation
 - [x] **Script Mode Implementation**: JSON protocol for scripting
   - Periodic status updates (every 30 seconds)