Enable bash strict mode in all shell scripts to catch errors early:
- set -e: Exit immediately if a command exits with non-zero status
- set -u: Treat unset variables as an error
- set -o pipefail: Return value of a pipeline is the status of the last
command to exit with non-zero status
This prevents silent failures and makes debugging easier by failing fast
when something goes wrong instead of continuing with potentially corrupted
state.
