The send_message tool description incorrectly stated that a scheduled
task's final output is not delivered to the user, instructing agents to
use the MCP tool for any communication. In reality, task-scheduler.ts
unconditionally forwards the agent's result to the user via a streaming
output callback (deps.sendMessage), which is a direct call to the
channel layer — entirely separate from the MCP tool path.
This caused agents following the description to call send_message
explicitly, resulting in duplicate messages: once via MCP and once via
the native streaming callback.
- Remove the incorrect note from the send_message tool description
- Fix the misleading comment at task-scheduler.ts which attributed
result delivery to the MCP tool rather than the streaming callback
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