Archive instead of delete, and one card per file

Archive files, Skills, and Routines with an Undo, restore them any time, and keep every version of a file on one card.
Nothing you make has to disappear by accident anymore. Archive puts a file, Skill, or Routine out of the way, Undo brings it straight back, and anything archived can be restored later.
Improvements
- Archive replaces Delete in the menu for files, Skills, and Routines, with a few seconds to Undo.
- Find everything you archived in the Library’s Archived tab or in Settings, and restore it with one click.
- Ask for a change to a deck, Word document, or PDF your AI teammate made, and the update lands as the next version of the same file instead of a new card.
- Cards made from the same file stack into one card with a version badge.
Fixes
- Correcting one fact in Memory replaces it instead of keeping both.
- Changing where a Routine delivers adds the new place instead of replacing the old one.
- A finished result stays in the bell until you read it.