1Terminates a background shell process.
 2
 3<usage>
 4- Provide the shell ID returned from a background bash execution
 5- Cancels the running process and cleans up resources
 6</usage>
 7
 8<features>
 9- Stop long-running background processes
10- Clean up completed background shells
11- Immediately terminates the process
12</features>
13
14<tips>
15- Use this when you need to stop a background process
16- The process is terminated immediately (similar to SIGTERM)
17- After killing, the shell ID becomes invalid
18</tips>