Adds the two localStorage stores behind PRD F13 and joins their events to the
feed's in App, so they sort, filter, focus, expire and tick through exactly the
same code paths rather than a parallel set.
Three decisions worth naming:
- Export carries customGames and customEvents. These exist in one browser and
nowhere else — not in the feed, not on a server — so an export without them
would be a backup that loses the half the reader typed. Import merges by id
like every other set and never removes.
- A date is read in the reader's timezone, and a bare end date means the end of
that day. Someone who types 20 Aug means the 20th where they are; the feed's
00:00Z day boundaries are a parser declining to guess a time the source never
printed, which is a different situation from being told directly.
- An impossible date is refused rather than rolled over, because Date.parse
turns 30 February into 2 March and a silently shifted date is the failure this
product exists to prevent.
Deleting a game is refused while it still holds events, and deleting an event
leaves its marks and logged days alone — reaching into three stores on one tap
is how a misclick costs somebody a streak.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
