feat(mobile): Add AI summary field to mobile bookmark info (#2157)

* feat: Add AI summary field to mobile bookmark info page

Add a new AI summary section to the mobile bookmark info page that allows users to:
- Generate AI summaries for link bookmarks
- View existing summaries with expand/collapse functionality
- Regenerate summaries with the refresh button
- Delete summaries

The implementation is inspired by the web app's AI summary feature and includes:
- Purple-themed styling to match the AI branding
- Loading states for all actions
- Toast notifications for success/error feedback
- Support for dark mode
- Only displays for LINK type bookmarks

The summary is rendered using markdown and appears prominently in the bookmark info page,
positioned between the title editor and tags section.

* refactor: Simplify AI summary styling to match normal fields

Remove purple border and background from the AI summary display to make it
look more like a standard field. The summary now uses the default card
background from InfoSection, making it visually consistent with other
fields on the page.

The purple "Summarize with AI" button is retained for the generate action.

* make the expand button more clear

---------

Co-authored-by: Claude <noreply@anthropic.com>

0 files changed, 0 insertions, 0 deletions