feat(notifications): update badges on settings cog and plugin nav #35
Description
Description
Add a notification badge (orange dot) system to indicate available updates:
Settings cog (top-left)
- Show an orange badge when:
- One or more plugins have updates available
- The app itself has an update available
Plugin nav pill (in Settings)
- Show an orange badge on the "Plugins" tab when plugin updates are available
Context
Currently, users have no visual indication that updates are available. They must manually check the plugin browser or app updates. A badge system provides passive notification without being intrusive.