Friends: in-town friend requests, roster, jump-to-friend-town

[harshithmullapudi]

What

A friend system centered on meeting people organically inside a town.

Flows

• Request — when you're near another player in any town, send a friend request from a proximity UI.
• Accept — the other player sees the pending request in a friends panel.
• Roster — sidebar/panel listing friends with status (online/offline, current town if public).
• Jump to friend — click a friend to teleport to whichever public town they're currently in.
• Discover — see the list of your friend's public towns and visit them directly.

Why

Solves the empty-town problem: today, bringing a friend requires copy-pasting a share code. A roster makes hanging out one click and turns Town into a place you check to see who's around.

Rough scope

• `Friend` model (reciprocal), pending / accepted states
• Proximity-based request UI in the game
• Friends sidebar / roster
• "Jump to friend's town" flow — reuses existing invite/share-code plumbing
• Presence signal per friend (current town + last-seen)

Notes

• Blocking / muting becomes necessary the moment friend roster ships — likely a follow-up issue.
• Composes tightly with the Passport (shared identity primitive).