Snapshots

1. Publish post

1.1. Schedule archive event w/ delay

1.1.1. Label archive link: Original

1.2. First edit

1.2.1. Don't archive edit

1.2.1.1. Original archived

1.2.1.1.1. Copy original (make Snapshot CPT).

1.2.1.2. Post not yet archived

1.2.1.2.1. Copy original (Snapshot CPT), archive w/o delay, clear event

1.2.2. Archive edit

1.2.2.1. Original post archived

1.2.2.1.1. Copy original (Snapshot CPT). Copy edit. Archive w/o delay.

1.2.2.2. Original post not yet archived

1.2.2.2.1. Copy original (Snapshot CPT). Copy edit. Archive w/o delay, clear event.

1.3. Subsequent edits

1.3.1. Copy edit (make Snapshot CPT). Archive w/o delay.

1.3.1.1. Label archive link with user-selected term, save user note on CPT.