* a UI to display local sync data in settings

* indicator UI

* text chunking

* unit and integration tests

* content extraction and HTML stripping using scraper and CSS selectors with html-escape

* PDS resolution

* use optimistic validation

* address linting fixes

* add lexicon publishing documentation.

* syntax highlighting

* backlinks

* toolbar

* add `card_type` database column

* put animations back in tutorial overlay

* bi-directional card flipping in study session

* update UserContext for app password pub

* fix tutorial

* sign PDS requests with DPoP keys

* add a client-side login success page.

* updated local dev docs

* interface density selection in settings

* add density styling to Tag component

* refactor repository initialization

* add just scripts and local dev docs

* enhance search results with source information

* because its cool

* update serif/display font

* help & onboarding

* Footer component

* expand Landing page content

* add custom fonts

* add personas and architecture

* expand AT Protocol concepts

* update project roadmap

* refactor deck API to use repository pattern

* rearrange conditional rendering

* update deck editor with card types, hints, and management.

* animation presets

* OAuth 2.1
* PDS client
* AT-URI
* TID utilities.