Adds the workspace members page at #/workspace/:id/members.
Read-only listing only - mutations land in slice 2B,
accept-invite URL handler lands in slice 2C.
Three sections render based on access path:
- Members: direct workspace_members rows with role + join date
- Organization access: org_owner/org_admin who reach this
workspace via org-level access (via_org=true). 75% opacity
+ italic "via organization" label to distinguish from direct
membership. Section hidden if empty.
- Pending invites: workspace_invites rows (admin-only -
section silently absent for non-admins via 403-suppress)
Switcher dropdown adds a "members" icon next to the rename
pencil, gated on can_admin (same predicate). Icon visible on
hover, mirrors the existing pencil pattern.
24 i18n keys added under members.* (read-only set; mutation
keys land in 2B).
Backend coverage from c4fbd2b unchanged; pre-flight curl
verification (13/13 cases) confirmed all 7 endpoints work as
documented before slice 2 first-exercised the four previously
untested ones (GET /invites, DELETE /invites/:id, PUT
/members/:userId, DELETE /members/:userId).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>