Upstream OpenViking removed the uid-less viking://user/<segment>
shorthand (#4196, merged 2026-08-21): reserved segments like memories
and peers no longer expand to the caller's space and the server
rejects them with HTTP 400 (NamespaceShapeError). First-party clients
were migrated to viking://~ in the same change; the Hermes plugin was
not (#91995).
Migrate every URI the plugin constructs — the profile/preferences/
entities session-start reads, the _build_memory_uri memory-mirroring
write path, and the tool-schema example — to viking://~/... README
uid-less references updated to match; canonical user-scoped forms
(viking://user/default/...) are unchanged. The ~ alias requires
OpenViking server >= 0.4.16 (#4167).
liuhao1024
fc4c2f456b