974a6bf0ae
- Shop: when short on coins the detail sheet now shows "{n} more coins" + a
"Get coins" CTA that opens the buy-coins page (was a dead disabled button).
- Chat: pin/unpin conversations (max 3, persisted to localStorage); pinned float
to the top with a gold pin. i18n chat.pin/unpin/pinLimit.
- Surrender: server now rate-limits forfeit asks at a human teammate
(45s per-user cooldown) so it can't be spammed. (Bot teammate still ends
immediately; teammate confirm dialog already existed.)
- OTP login hardening: Kavenegar send now parses the API status from the body
(HTTP 200 can still be a failure) + logs it + 12s timeout; client auth fetch
gets a 20s AbortController timeout so a lost response surfaces an error
instead of freezing on "sending…".
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>