Landscape guidance

Follow adr/README.md and specs/README.md for document lifecycle rules.
Each specification identifies affected repositories; maintain systems.md when responsibilities or ownership boundaries change.
Implementation, runtime configuration and validation evidence belong to their application repositories. Reusable build resources belong to engineering.
Shared agent workflows live in this repository under skills/. Read the requested skill's SKILL.md before using it. For code reviews use skills/code-review/SKILL.md with the consuming project's backend-review companion and coding standards.
Use grill-me only when explicitly requested; read skills/grill-me/SKILL.md and its dependency skills/grilling/SKILL.md. Installing a skill starts no interview.
Keep upstream skill files unchanged; preserve skills/upstream.json, attribution and licenses. Consumers use these landscape workflows across all projects.
Do not infer permission for production deployment from documentation changes.