Decouple channel names (config keys) from channel types (provider IDs) to allow
multiple instances of the same provider. This ensures robust identification
across the message bus and agent dispatch logic.
- Introduce ChannelType in InboundContext for consistent provider tracking
- Refactor IsInternalChannel to use provider type instead of generic names
- Update all channel implementations to pass through their provider type via BaseChannel
- Standardize agent dispatch and heartbeat recording to use ChannelType
- Enhance shell and cron tools with improved execution tracking and fallback logic
- Fix redundant channel field assignments and hardcoded types in providers
- Resolve build issues by adding missing logger imports to tool packages
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