documentation-site

name	Documentation Site
description	This skill documents the Fumadocs documentation site at docs.relaytty.com. Use this skill when writing, updating, or organizing user-facing documentation, working with the screenshot pipeline, modifying docs config/theme, or when a feature change requires a corresponding docs update. Also use when the user mentions Diataxis, docs, llms.txt, or the docs site.

Documentation Site — docs.relaytty.com

Stack

Fumadocs (Next.js) with static export → Cloudflare Pages.

Layer	Tool
Framework	Fumadocs (fumadocs-core, fumadocs-mdx, fumadocs-ui)
Build	Next.js static export (output: 'export' in next.config.mjs)
Content	MDX files in docs/content/
Hosting	Cloudflare Pages (relay-tty-docs project)
Domain	docs.relaytty.com (CNAME → relay-tty-docs.pages.dev, DNS-only)
CI/CD	.github/workflows/docs.yml — build + deploy on push to docs/**
LLM	Built-in llms.txt, llms-full.txt, .mdx endpoints, "Open in Claude" buttons

Key Files

File	Purpose
docs/source.config.ts	Content source definition (dir, schema, postprocess)
docs/next.config.mjs	Static export, image config
docs/lib/layout.shared.tsx	Nav title, GitHub link, branding
docs/lib/source.ts	Source loader (baseUrl: '/')
docs/components/mdx.tsx	MDX components (Tabs, Tab, Callout registered here)
docs/components/provider.tsx	Theme provider (dark mode default)
docs/app/global.css	Custom theme colors matching relay-tty brand
docs/app/(docs)/layout.tsx	DocsLayout wrapper
docs/app/(docs)/[[...slug]]/page.tsx	Doc page renderer with LLM buttons
docs/app/llms.txt/route.ts	Auto-generated llms.txt
docs/app/llms-full.txt/route.ts	Auto-generated llms-full.txt
docs/content/**/meta.json	Navigation order per directory

Content Structure (Diataxis)

All docs are user-facing. There are no "internal only" docs. Use Diataxis to decide where content belongs:

docs/content/
  index.mdx                    # Landing page
  tutorials/                   # LEARNING — step-by-step for beginners
    meta.json
    getting-started.mdx
    mobile-access.mdx
    sharing-terminal.mdx
  how-to/                      # TASKS — goal-oriented guides
    meta.json
    session-management.mdx
    web-ui-views.mdx
    input-tools.mdx
    tunnel-access.mdx
    sharing-qr.mdx
    install-service.mdx
    file-browser.mdx
    voice-input.mdx
    pwa-install.mdx
    windows-wsl.mdx
    testing.mdx
    releasing.mdx
  reference/                   # INFO — factual lookup
    meta.json
    cli.mdx
    environment.mdx
    keyboard-shortcuts.mdx
    configuration.mdx
    protocol.mdx
  explanation/                 # UNDERSTANDING — architecture, design decisions
    meta.json
    architecture.mdx
    vs-tmux-ssh.mdx
    session-lifecycle.mdx
    security-model.mdx

Diataxis Quick Decision

User is trying to...	Type	Directory
Learn something new	Tutorial	tutorials/
Accomplish a specific task	How-to	how-to/
Look up specific info	Reference	reference/
Understand why/how	Explanation	explanation/

Adding a New Doc Page

1. Create docs/content/<section>/<slug>.mdx with frontmatter:

   ---
   title: Page Title
   description: One-line description
   ---
   

2. Add the slug to the section's meta.json pages array
3. Use absolute paths for cross-section links: /how-to/session-management (not ../how-to/session-management)
4. Use extensionless links — getting-started not getting-started.md
5. Images go in docs/public/images/ and are referenced as /images/...

MDX Components Available

Registered in docs/components/mdx.tsx:

• <Tabs items={["Tab 1", "Tab 2"]}><Tab value="Tab 1">...</Tab></Tabs>
• <Callout type="info" title="Title">content</Callout> (types: info, warn, error)
• <Cards>, <Card> — for link grids
• All standard Fumadocs components from fumadocs-ui/mdx

Screenshot Pipeline

Playwright captures mobile/desktop screenshots, Pillow annotates with numbered callouts in side margins.

npm run docs:screenshots           # capture + annotate all 10 screens
# Prereq: relay-tty server running on localhost with sessions

File	Purpose
scripts/screenshots/capture.py	Playwright: mobile (390x844@3x) and desktop (1280x800@2x) capture
scripts/screenshots/annotate.py	Pillow: numbered circles in margins with leader lines to features
scripts/screenshots/manifest.json	Screen definitions: URLs, selectors, setup actions, annotations
scripts/screenshots/run.sh	Orchestrator
docs/public/images/mobile/	Output PNGs (committed to git)

Annotation positions are defined in manifest.json as (x, y) target coordinates. Circles are placed in side margins (left for left-side features, right for right-side). Amber dots mark exact target points.

Build & Deploy

npm run docs:dev        # Preview at localhost:3000
npm run docs:build      # Static output to docs/out/

Push to main triggers .github/workflows/docs.yml → Cloudflare Pages.

Rule: Keep Docs Updated

When adding or changing user-facing features, update the corresponding doc page. If no page exists, create one in the appropriate Diataxis section.