Module task_complete 

Task complete tool — signal explicit task completion.

Instead of relying on implicit termination (no tool calls = done), agents call this tool to end the ReAct loop. This provides:

• Explicit completion signal (no ambiguity)
• Required summary of what was accomplished
• Natural error recovery (agent keeps trying until this is called)
• Clean conversation history

Structs

TaskCompleteTool

Tool that signals explicit task completion.