Dayscript recorder coverage

Every Event a Day app can receive, and the dayscript step the recorder writes for it (DESIGN.md §14.6). Derived from day-spec’s Event enum and day-script’s event_to_step; CI fails if this file drifts from them.

A new Event variant lands here as dropped by default. That is the point: the recorder ends in a catch-all, so an unmapped event is silent at runtime — the control replays but never records. If a new variant should produce a step, map it in event_to_step; if it should not, the dropped row is the record of that decision.

9 of 48 variants record.

`Event`	Step	Disposition
`Pressed`	`Tap`	recorded
`TextChanged`	`Input`	recorded
`Submitted`	—	dropped
`ToggleChanged`	`Select`	recorded
`ValueChanged`	—	dropped
`ValueCommitted`	`SetValue`	recorded
`SelectionChanged`	`Select`	recorded
`ListActivated`	`Activate`	recorded
`Undo`	—	dropped
`Edit`	—	dropped
`SelectionSet`	—	dropped
`FocusChanged`	—	dropped
`Tap`	`Tap`	recorded
`LinkActivated`	—	dropped
`LongPress`	—	dropped
`ContextMenu`	—	dropped
`Drag`	—	dropped
`Pinch`	—	dropped
`Pan`	—	dropped
`Hover`	—	dropped
`ScrollChanged`	—	dropped
`FrameChanged`	—	dropped
`NavBack`	`Navigate`	recorded by the nav observer (`on_nav`)
`NavPresentationChanged`	—	dropped
`Key`	—	dropped
`Pointer`	—	dropped
`WindowResized`	—	dropped
`RouteRequested`	`Navigate`	recorded by the nav observer (`on_nav`)
`PresentResult`	—	dropped
`ImageDecoded`	—	dropped
`ImageEncoded`	—	dropped
`Custom`	—	dropped
`MenuAction`	—	dropped
`ToolbarChanged`	—	dropped
`SearchChanged`	—	dropped
`SearchScopeChanged`	—	dropped
`SearchSuggestionChosen`	—	dropped
`Lifecycle`	—	dropped
`WindowClosed`	—	dropped
`WindowFocused`	—	dropped
`ListReorder`	—	dropped
`ListDelete`	—	dropped
`ListSwipe`	—	dropped
`CoverHidden`	—	dropped
`InspectorChanged`	—	dropped
`TreeExpanded`	—	dropped
`TreeMove`	—	dropped
`TreeSelection`	—	dropped