A signed-in user with a snapshot goes straight to home; the same boot requests run in the
background and replace it. Snapshot is cleared whenever tokens are cleared and on a new login,
ignored from another build or when older than 7 days, and dropped when the fresh profile is a
different user (reboot remounts MainApp via a generation key; AnimatePresence otherwise kept the
exiting one). Notifications/characters wait for the profile answer so an expired access token
costs the same requests as before. refreshHome applies only the latest answer. Home shows a
"saved data" strip when the map could not be refreshed.
Measured locally (old vs new build, same backend, Chrome throttling, median of 3, time to map):
Fast 3G 2.46s -> 1.80s (expired token 3.63s -> 1.80s); Slow 3G 8.52s -> 6.14s (expired 12.6s ->
6.13s); API requests per open unchanged (6 valid, 11 expired). 12/12 behaviour checks passed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>