Implements the /about route with app description, version info,
clickable links to the source repo and AGPL-3.0 license, and
third-party copyright notices. Adds url_launcher for cross-platform
link handling.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Displays a scatter chart timeline of when the device was seen online,
with a time range selector (Today → Last Year). Tooltips show event
date/time, type, and highlight any IP or vendor changes relative to
the current device data.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Users can now mark a notification as read via a popup menu on each list
item or by swiping left. Both actions call the backend API, remove the
item from the list, and show a snackbar confirmation. Swiping an already
read notification shows an error snackbar and bounces the item back.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
