Expose `annotation.appLink` (readest://) and `annotation.webLink`
(https://web.readest.com) as template variables for custom export
templates. The shipped default template now emits the readest:// app
deeplink for the page link so exported notes open the native app.
The non-template export mode keeps the universal https link.
Preview links also gain target="_blank" so they open in a new tab
instead of replacing the dialog.
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Add formatBlockQuote utility and blockquote nunjucks filter so both
default and custom template exports prefix every line with `>`.
Document all available formatters in the custom template help panel.
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Huang Xin