bash logging best practices

Hands-on Bash guide to make AI pipelines observable, safe, and debuggable: emit JSON Lines with correlation IDs, split and line-buffer stdout/stderr to files and syslog/journald, log lifecycle and exit codes via traps, redact secrets/PII, and rotate logs. Includes apt/dnf/zypper installs for jq, util-linux, logrotate, moreutils, plus a pasteable script to boost auditability, control costs, and speed incident response.