Parked architecture speculation. Full write-up in docs/design-icloud-sync.md.
Future madness — parked, not planned.
Gated behind paying Mac customers asking for iPad review by name. Same contingent
bet as full-native macOS, further down the same path.
1 · Two modes, one shared core
2 · The iPad overlay
The staircase (never build top-first): registry-only sync →
read-only iPad review → per-field write-back (star → tags → renames).
See the design doc for the pre-mortem.