The public "Staff online" list on the Shard page exposed each staff
member's in-game location (map + coordinates) to everyone, including
logged-in players and unauthenticated visitors.
Location is now privileged data:
- Server: getOnline inspects the caller's role via getUserFromRequest
(the same non-rejecting helper siteMode uses on public routes) and
only includes map/x/y/z for admin/moderator callers. For everyone
else the fields are omitted from the JSON entirely, so they can't be
read from the network tab. serial + name (online status) still shown.
- Client: Shard.jsx gates the location span on the viewer's role from
useAuth() (same pattern as RoleGate); non-privileged viewers see who
is online but no location field is rendered.
Tests: publicShardOnline.test.js covers admin + moderator (location
included), player + unauthenticated + editor (location omitted).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XmHdsbnLzDMAVQkAoTQSBe
