[XB] Alerts Auto-refresh 2.1.1

This add-on is included with the Basic membership ​

By becoming a supporter, you gain access to the full set of add-ons available in your tier for as long as your membership remains active.
Once the promotion ends, you can keep using any add-ons you’ve already downloaded, and simply renew your subscription whenever you’d like to continue receiving updates.​

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Features:​

• Automatic Counter Refresh: Periodically check for new alerts and conversations in the background.
• Instant Navigation Updates: Update alert and conversation counters immediately.
• Multiple Update Methods: Support both standard background polling and live updates when available.
• Adaptive Refreshing: Automatically reduce refresh frequency when no changes are detected.
• Multi-Tab Coordination: Only one open tab checks for updates and instantly shares new counts with all other tabs, so extra tabs add no extra server load.
• Inactive Tab Detection: Pause background updates while all of the user's tabs are inactive.
• Automatic Resume: Resume checking immediately when the user returns to any tab.
• Fallback Support: Automatically switch to standard polling when live updates are unavailable.
• Admin Configuration: Configure the refresh interval and preferred update method.
• User Preference: Allow individual users to disable automatic refreshing from their account preferences.

Useful for:​

• Active Communities: Keep conversations and alerts up to date without page reloads.
• Better User Experience: Notify users about new activity as it happens.
• Reduced Server Load: Adaptive refresh intervals minimize unnecessary requests.
• Flexible Control: Give both administrators and users control over refresh behavior.

Screenshots:​