Ilia Denisov
fdd5fd193d
Adds `src/lib/mail-store.svelte.ts` — the reactive store that
coordinates the in-game mail view. Responsibilities:
- holds the inbox and sent listings for the current game and fires
the initial parallel fetch (`fetchInbox` + `fetchSent`) on
`setGame`;
- exposes a `entries` derived rune that builds the unified list
pane: per-race threads merged from incoming + outgoing personal
messages, plus stand-alone items for system / admin / own
paid-tier broadcasts. Thread messages are sorted oldest → newest
for chat-style rendering; the list itself sorts newest-first by
the most-recent entry timestamp;
- derives `unreadCount` from `readAt === null` rows for the header
view-menu badge;
- imperative `markRead` / `softDelete` actions with optimistic
state flips and roll-back on RPC failure;
- compose actions for personal / paid-tier broadcast / owner-admin
sends;
- `applyPushEvent(gameId)` hook called by the layout when a
`diplomail.message.received` push frame arrives; refetches the
inbox without trusting the preview payload;
- persists the most recent message id under
`cache.diplomail/${gameId}/last-seen` so a returning session can
pre-paint the badge without a network round-trip.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>