Allow GM play roster access

README.md

@@ -78,7 +78,7 @@ Current repo note:
 - Campaign creation, roster reads, participant-scoped visibility, and owner and admin deletion
 - Character creation, activation, owner transfer, campaign reassignment or unlinking, and owner and admin deletion
 - Skill groups with reusable defaults plus skill and skill-group create, edit, reassign, and delete flows
-- Owner-scoped play workspace that lists only the current user's characters while preserving GM and admin management capabilities
+- Play workspace that lists the current user's characters, or the full active campaign roster when the user is that campaign's GM
 - Campaign log paging, lazy-loaded roll detail, compact summaries, and live state refresh through SSE
 - Custom roll submission from the play screen without creating a persisted skill
 - Instant skill filtering in the character panel