cancellation

Demonstrates resource cleanup and error handling patterns when commands fail or time out.

Setup

bunx alineo-cli init   # starts OpenSandbox in Docker (one-time setup)

bun install
bun start

Pattern	Description
`try/finally`	Guarantees `sb.close()` runs even when an exec throws
Bash `timeout`	Limits a command's wall-clock time at the shell level
`CommandError`	Catching the error thrown by a non-zero exit code

Three sandboxes run sequentially, each demonstrating one pattern.