tool use

Prompt engineering is shifting from clever wording to disciplined, Bash‑native software practice: treat prompts as code (templates, variables, versioning), demand JSON with schema validation, add automated A/B evaluation and guardrails, and run locally via Ollama for privacy/latency while remaining CI‑ready. The post provides copy‑paste Linux commands to build reproducible, auditable pipelines resilient to drift, cost, and compliance.