Start recording a note, then delete it via the ⋯ menu.
The dialog warns that deleting will stop the active recording
Favorite a note from the sidebar (star), then unfavorite it.
The note appears in / leaves the Favorites section accordingly
(Free tier) Open a note older than 30 days. No old note handy? In a non-prod build, open Settings → QA: under QA Entitlements set the plan to Free and click Apply, then under Seed backdated note enter 35 days and click Seed backdated note. (The lock only triggers when QA Entitlements shows enforcement=true — it is gated per environment, so a local dev backend may have it off.)
A "Notes older than 30 days are locked on the Free plan" banner shows with Unlock all notes