Update Agent Config

Refresh a mature AGENTS.md hierarchy that has drifted from current code. Audit first, in evidence. Then dispatch parallel writers fed by the audit. Add files only for code-bearing folders that genuinely lack one. Preserve voice, structure, length — patch, do not rewrite.

This skill assumes the AGENTS hierarchy already exists. For greenfield creation of root + folder AGENTS.md files, route to init-agent-config.

When to use

• "audit our AGENTS.md / CLAUDE.md / REVIEW.md files"
• "the AGENTS docs are stale after the recent refactor — refresh them"
• "verify every file:line reference in src/AGENTS.md is correct"
• "recompute the color / font-size / spacing frequency tables in src/AGENTS.md"
• "the doc claims X but the code now says Y — sweep the drift across all docs"
• "find every code folder without an AGENTS.md and write one" (expect mostly skips — see Phase 0 selection test)
• "show me which folders have AGENTS.md coverage and how big each file is"
• "the schema version changed; sweep all docs that quote the old literal"
• "docs marked NOT YET LANDED for files that now exist — fix the manifest tables"

Do NOT use for