Enhance CLI with multi-platform messaging integration and configuration management

- Updated CLI to load configuration from user-specific and project-specific YAML files, prioritizing user settings.
- Introduced a new command `/platforms` to display the status of connected messaging platforms (Telegram, Discord, WhatsApp).
- Implemented a gateway system for handling messaging interactions, including session management and delivery routing for cron job outputs.
- Added support for environment variable configuration and a dedicated gateway configuration file for advanced settings.
- Enhanced documentation in README.md and added a new messaging.md file to guide users on platform integrations and setup.
- Updated toolsets to include platform-specific capabilities for Telegram, Discord, and WhatsApp, ensuring secure and tailored interactions.

requirements.txt

@@ -31,4 +31,14 @@ platformdirs
 # boto3
 
 # Optional: For cron expression parsing (cronjob scheduling)
-croniter
+croniter
+
+# Optional: For messaging platform integrations (gateway)
+# Telegram: pip install python-telegram-bot
+# python-telegram-bot>=20.0
+
+# Discord: pip install discord.py
+# discord.py>=2.0
+
+# WhatsApp: Requires Node.js bridge (see docs/messaging.md)
+# aiohttp  # For WhatsApp bridge communication