Background Task Runner

Execute the following task in the background:

$ARGUMENTS

Use the appropriate background execution method:

• For agent tasks: Use Task tool with run_in_background=true
• For shell commands: Use Bash tool with run_in_background=true

Return immediately after starting the background task. Inform the user:

1. That the task is running in background
2. How to check its status or output later (using TaskOutput tool or /tasks command)