Credits system, Bring-Your-Own-Key plotting (BYOK), and the invite mechanism launched.
New Features
Credits system: credit validity, earn and spend rules landed; daily check-in and inviting friends both earn credits (inviter and invitee each get 10).
Bring-Your-Own-Key plotting (BYOK): after binding your own AI model key, plotting does not consume platform credits — it is a separate entry from the platform compute pool.
Personal page split out a dedicated "change password" page, and a timezone setting was added.
Invite rules unified to "inviter + new user each get +10 credits".
Experience Improvements
Error messages now appear in the matching language; fixed the issue where the English UI popped up Chinese prompts.
Unified layout and styles for a more consistent look.
Bug Fixes
Fixed the session expiry being too short (unified to 7 days).
