colibri had no Prettier config or gate, so its markdown drifted freely (22/31
files failed Prettier). Mirror the clawdie-iso gate so docs stay consistent:
- .prettierrc: same as clawdie-iso — proseWrap=preserve, printWidth=80, and
embeddedLanguageFormatting=off for *.md so fenced code (JSON/mermaid/shell in
the graph + design docs) is left exactly as written.
- .prettierignore: target/, scratch dirs, CHANGELOG.
- scripts/check-format.sh: `prettier@3 --check '**/*.md'` (run before pushing).
- AGENTS.md: "Markdown Formatting Gate" section documenting the workflow.
- One-shot `prettier --write` across all markdown. Pure formatting — only
emphasis-marker (*x* -> _x_), list-bullet, table-padding, and blank-line
normalization; no prose/command/code-fence content changed.
Gate now green (`./scripts/check-format.sh` → all matched files pass).
Docs-only + tooling — no Rust touched, no rebuild.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
