Keep the personal half of the desktop in one place, and ask before installing it

Agent instructions, skills, SSH host aliases and expansion triggers are worth having identical on every machine one person owns, and belong in none of the shared configuration. They live in user/ now, with a manifest saying where each piece goes and a link-user stage that puts it there. That stage does nothing unless the machine said yes. Somebody who clones Panama to try the desktop keeps their own ~/.claude/CLAUDE.md exactly where it was; the question names the destinations and defaults to no. Anything displaced goes to config/old rather than being deleted. ~/.claude/CLAUDE.md and ~/.codex/AGENTS.md were byte-identical copies of one file, which is the drift this exists to prevent. Also adds the vitals toggles for the battery and Claude usage readouts, which had preferences and no way to reach them.
2026-08-22 08:54:43 -04:00
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+---
+name: headmatter
+description: Deck-wide configuration options in the first frontmatter block
+---
+
+# Headmatter Configuration
+
+Deck-wide configuration options in the first frontmatter block.
+
+## Theme & Appearance
+
+```yaml
+---
+theme: default              # Theme package or path
+colorSchema: auto           # 'auto' | 'light' | 'dark'
+favicon: /favicon.ico       # Favicon URL
+aspectRatio: 16/9           # Slide aspect ratio
+canvasWidth: 980            # Canvas width in px
+---
+```
+
+## Fonts
+
+```yaml
+---
+fonts:
+  sans: Roboto
+  serif: Roboto Slab
+  mono: Fira Code
+  provider: google          # 'google' | 'none'
+---
+```
+
+## Code & Highlighting
+
+```yaml
+---
+highlighter: shiki          # Code highlighter
+lineNumbers: false          # Show line numbers
+monaco: true                # Enable Monaco editor ('true' | 'dev' | 'build')
+twoslash: true              # Enable TwoSlash
+monacoTypesSource: local    # 'local' | 'cdn' | 'none'
+---
+```
+
+## Features
+
+```yaml
+---
+drawings:
+  enabled: true             # Enable drawing mode
+  persist: false            # Save drawings
+  presenterOnly: false      # Only presenter can draw
+  syncAll: true             # Sync across instances
+record: dev                 # Enable recording
+selectable: true            # Text selection
+contextMenu: true           # Right-click menu
+wakeLock: true              # Prevent screen sleep
+---
+```
+
+## Export & Build
+
+```yaml
+---
+download: false             # PDF download button
+exportFilename: slides      # Export filename
+export:
+  format: pdf
+  timeout: 30000
+  withClicks: false
+  withToc: false
+---
+```
+
+## Info & SEO
+
+```yaml
+---
+title: My Presentation
+titleTemplate: '%s - Slidev'
+author: Your Name
+keywords: slidev, presentation
+info: |
+  ## About
+  Presentation description
+---
+```
+
+## SEO Meta Tags
+
+```yaml
+---
+seoMeta:
+  ogTitle: Presentation Title
+  ogDescription: Description
+  ogImage: https://example.com/og.png
+  ogUrl: https://example.com
+  twitterCard: summary_large_image
+  twitterTitle: Title
+  twitterDescription: Description
+  twitterImage: https://example.com/twitter.png
+---
+```
+
+## Addons & Themes
+
+```yaml
+---
+theme: seriph
+addons:
+  - excalidraw
+  - '@slidev/plugin-notes'
+---
+```
+
+## Theme Configuration
+
+```yaml
+---
+themeConfig:
+  primary: '#5d8392'
+  # Theme-specific options
+---
+```
+
+## Defaults
+
+Set default frontmatter for all slides:
+
+```yaml
+---
+defaults:
+  layout: default
+  transition: fade
+---
+```
+
+## HTML Attributes
+
+```yaml
+---
+htmlAttrs:
+  dir: ltr
+  lang: en
+---
+```
+
+## Presenter & Browser
+
+```yaml
+---
+presenter: true             # 'true' | 'dev' | 'build'
+browserExporter: dev        # 'true' | 'dev' | 'build'
+routerMode: history         # 'history' | 'hash'
+---
+```
+
+## Remote Assets
+
+```yaml
+---
+remoteAssets: false         # Download remote assets locally
+plantUmlServer: https://www.plantuml.com/plantuml
+---
+```
+
+## Full Template
+
+```yaml
+---
+theme: default
+title: Presentation Title
+author: Your Name
+highlighter: shiki
+lineNumbers: true
+transition: slide-left
+aspectRatio: 16/9
+canvasWidth: 980
+fonts:
+  sans: Roboto
+  mono: Fira Code
+drawings:
+  enabled: true
+  persist: true
+download: true
+---
+```