Setup Demon Skills

Scaffold the per-repository conventions the maintenance flow assumes:

Agent Note tree — the .agents/notes/{proposed,implemented,rejected,archived}/{class}/ layout and the note format.
Bilingual pairing — the foo.md + foo.zh.md + foo.i18n.yaml triplet convention and both switcher lines.
Documentation standard — the docs/AGENTS.md structure, tier, budget, and slop rules that doc-standards applies.
Session discipline — the four standing-order lines that gate execution, verification, and destructive actions.
Documentation budget gate — the self-contained verify-doc-budgets script plus its manifest that enforce the standard's ceilings.
Change-scope tool — the change-scope script that reports a change's committed and worktree scope; pre-push-checks and code-review read it.
Git hooks — the lefthook.yml jobs that verify translation pairing, archived notes, and whitespace before commit.
Where they live — a line in the repository's root AGENTS.md pointing at the four doc locations; the tools land in scripts/ and lefthook.yml, which need no pointer.

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

setup-demon-skills