Set up this repo for the skills

Scaffold the per-repo configuration that the engineering skills assume:

• Issue tracker: where specs and tickets live (GitHub by default; local markdown is also supported out of the box)
• Triage labels: the strings used for the five canonical triage roles
• Domain & user docs: where GLOSSARY.md, USER-BRIEF.md, and ADRs live, and the consumer rules for reading them

All three live under one agent root, chosen once (docs/agents/ by default); see Section 0 below.

This is a prompt-driven skill, not a deterministic script. Explore, present what you found, confirm with the user, then write.

Process

1. Explore

Look at the current repo to understand its starting state. Read whatever exists; don't assume: