Improve Thread Filtering with Tag Exclusions and Tag Date Filters

Current Limitations:

• The thread filter only allows searching by specific tags. There’s no option to exclude threads that contain certain tags.

• Filtering is based on the latest message date, but not on when a tag was added.

• Rules only apply to actions going forward—there’s no way to retroactively remove a tag that was added in the past, even if it no longer meets the rule criteria.

Proposed Enhancements:

1. Tag Exclusion: Add support for filtering out threads that contain specific tags (e.g., exclude threads tagged "closed" or "spam").

2. Tag Date Filtering: Allow filtering based on the date a tag was added to a thread.

3. Rule Review / Tag Removal:

   • Add a way to check rules retroactively to see if previously tagged threads still meet the criteria.

   • Allow admins to remove tags automatically when a rule’s condition is no longer met.

Why It Matters:

• Enables more flexible, precise filtering and better dashboard/report customization.

• Helps track and audit thread states over time (e.g., when something became a "priority").

• Reduces tag clutter and improves tagging accuracy by automatically cleaning up outdated tags.

• Supports more reliable automation, especially for workflows that depend on tags staying up to date.

• Those actions can be taken without having to create a rule, only by being able to better filter the tags as it can be for one-time events.