Kaku Product Docs

Use this skill to write or update the user-facing product documentation on the Kaku website. The site is the deliverable; this skill is the repeatable flow for keeping it correct and adding the next feature without drift.

The audience is normal users, not contributors. Explain what each page/button/shortcut is, how to reach it, and what happens after you use it. Avoid implementation detail. No em dashes, no emoji (project + global rules).

Where things live

• Site worktree: ~/www/kaku-site on the vercel branch (NOT main). Vercel serves kaku.fun by pushing that branch. git worktree list confirms the path.
• Design system: Kami parchment system. Read ~/www/kaku-site/DESIGN.md before any visual change. Match the existing pages; do not invent new components.
• Doc pages (EN under docs/, ZH under zh/docs/, kept in lockstep): Install (index.html), Guide (guide.html), Features (features.html), CLI Reference (cli.html), Configuration (configuration.html), Keybindings (keybindings.html), FAQ (faq.html), Contributing (contributing.html).
• Compare lives at /compare and /zh/compare, same chrome as About. That is the home for iTerm2 / Warp / Ghostty / WezTerm / Terminal.app questions. Do not add a Mole-style /blog tree unless there are several dated essays to publish.
• Guide vs Features: Guide is the narrative onboarding walkthrough (first launch, then tabs/panes, shell, AI, tools, settings). Features is feature-by-feature reference. Keep the Guide short and link out to the reference pages; do not duplicate config tables there.
• Screenshots: shots/kaku-dark.webp and shots/kaku-light.webp (1920x1192). Reuse them with <figure class="shot">. Kaku is a native terminal, so CDP/browser screenshots do not apply to the app; only capture new app shots if the maintainer explicitly asks (build make app or use /Applications/Kaku.app, then screencapture).

Source of truth: verify, never infer

User-facing docs are public. Do not copy feature claims from a subagent summary or from a feature's name. Confirm each claim against the running code before publishing:

• Defaults and behavior flips: grep config/src/config.rs (and its tests, e.g. *_defaults_to_*) and bundled config in assets/. Example caught this way: v23 flipped smart_tab_mode default to suggestion_first; the site still said completion_first.
• Shell behavior: assets/shell-integration/setup_zsh.sh.
• Keybindings / menus: the existing keybindings.html is the maintainer's authored ground truth; reuse its wording rather than re-deriving.
• The existing site docs are authoritative for tone and naming. When you add something new, verify it; when you echo something existing, match it.

Workflow

1. Scope: read git log/gh release list for the current version and what changed. Read the nearest crate AGENTS.md and CLAUDE.md for feature notes (e.g. config_version changes).
2. Inventory the site: read the target page(s) raw to clone exact markup. Note site-nav, docs-sidebar > docs-menu, section-toc, doc-content, doc-pager, footer. ZH footer/skip-link wording differs from EN; copy the ZH variants verbatim from an existing ZH page.
3. Write/edit content in plain language. New page: clone an existing doc page's full scaffold, change <title>/description/canonical/hreflang/hero/docs-menu current item/section-toc/doc-pager. Anchors use a page- prefix (guide-...).
4. Wire navigation (a new page touches every doc page):
   • Insert the new <a href="/docs/<page>"><span>Label</span></a> into the docs-menu block of all EN doc pages, and the /zh/docs/... variant into all ZH pages. The page where the neighbor link carries aria-current="page" needs a separate sed (the attribute breaks a naive anchor match).
   • Fix the doc-pager prev/next chain on the two neighbor pages only (scope per-file so you do not rewrite the new page's own pager).
   • Add both URLs to sitemap.xml and a line to llms.txt (and llms-full.txt if it enumerates pages).
5. Version pointers (only when a release shipped): bump the current-version pointer, not historical references.
   • Bump: nav >v0.X.Y</a> (every page), JSON-LD "softwareVersion" (both index.html), AppleScript get version example, llms-full.txt Latest version:, and the version in agent.json. python3 scripts/check_public_facts.py (network) fails when agent.json or llms-full.txt disagree with the latest GitHub release.
   • Leave alone: roadmap narrative ("V0.X.0 is out", "after V0.X.0") and any "this version added" history.
   • Confirm the release is actually public first (gh release list), or the site will document an unreleased default.
6. Verify before declaring done:
   • python3 scripts/highlight.py --check (0 files need highlighting).
   • python3 scripts/build_markdown.py --check and python3 scripts/build_feed.py --check: the .md twin beside every page and feeds/pages.jsonl are generated from the HTML, so run both without --check after editing HTML and commit the regenerated files with it. A new page also needs the <link rel="alternate" type="text/markdown"> head tag (DESIGN.md).
   • python3 scripts/check_sitemap.py: sitemap locs match trailingSlash: false, and lastmod is not older than the newest committed HTML or agent-facing index. Bump sitemap.xml, sitemap-index.xml, and schemamap.xml with the content.
   • Internal links resolve under cleanUrls (every /docs/x has docs/x.html).
   • HTML well-formed (no unclosed/stray tags) on new/edited pages.
   • EN and ZH parity: same sections, same anchors, same tables.
   • Browser screenshot of key pages (CDP / browser-debug): capture each changed/new page rendered in a real browser engine. The Kaku app is a native terminal, so app screenshots need make app / /Applications/Kaku.app + screencapture and are only done on explicit request; the website pages, however, are browser-debuggable and should be screenshotted as standard verification. On a machine with only Safari (no Chromium), use the Preview MCP's bundled engine:
     • Build a temp root so a deep page renders at /: cp docs/<page>.html /tmp/prev/index.html and symlink the assets it references by absolute path (ln -sf <site>/styles.css <site>/shots <site>/img /tmp/prev/).
     • Add a .claude/launch.json config running python3 -m http.server <port> --directory /tmp/prev, then preview_start, take a screenshot, and resize the preview to the mobile preset for the 375px check (DESIGN.md mandates desktop + 375px).
     • The bundled browser caches the loaded page, so after swapping the temp index.html to the next page (e.g. the ZH variant), preview_stop then preview_start to force a fresh load before the next screenshot. Confirm the live nav version, the current-page sidebar highlight, and EN/ZH typography all render.
7. Hand off: show the diff. Do NOT commit or push the vercel branch unless the maintainer says so this turn (git safety rules). Pushing vercel deploys to production immediately.

Adding the next feature later

• Decide the home: a daily-use behavior becomes a bullet/step in the Guide; a configurable surface or new tool becomes a section in Features (plus Keybindings/Configuration if it adds a shortcut or option).
• Always update EN and ZH together. Mirror anchors and tables exactly.
• Re-run the verify checklist. Keep diffs minimal and atomic per behavior.