fix: 2023 room instances, publish, role permissions and co-owner invites

- Room roles: list the creator as Creator (255), not CoOwner (30). The
  client takes the local role from the Roles list and only lets a player
  edit roles below their own (Creator excepted), so the creator could not
  edit Co-Owner and Creator permissions. Enforce the role ladder on the
  server (RoomRoleRules), let invitees accept (PUT roles/{me} role=30) and
  reject (PUT roles/{me}/invite role=0), send message Types 62/60/61, and
  push RoomUpdate after every role change.
- Permissions: persist PUT subrooms/{sub}/permissions cells in a new
  RoomRolePermissions table, serve them from photon_access_token (plus a
  roomserver/ twin) and push PhotonAccessToken to the sub-room.
- Publish: player-owned rooms are never IsRRO on the wire; the client
  hides Publish and every room setting for an RRO.
- Sub-rooms: wire SubRoomId = OrderIndex + 1 (the client will not load a
  sub-room with id 0), new rooms always get a named Home sub-room, and a
  startup pass repairs rooms without one.
- Instance browser: per-room Redis presence index, live players only,
  private instances for the people allowed in, real IsFull.
- Room/sub-room settings: creator or accepted co-owner everywhere.

DorkNet.Server/Data/DorkNetDbContext.cs

@@ -11,6 +11,7 @@ public class DorkNetDbContext(DbContextOptions<DorkNetDbContext> options) : DbCo
     public DbSet<RelationshipEntity> Relationships => Set<RelationshipEntity>();
     public DbSet<RoomEntity> Rooms => Set<RoomEntity>();
     public DbSet<RoomRoleEntity> RoomRoles => Set<RoomRoleEntity>();
+    public DbSet<RoomRolePermissionEntity> RoomRolePermissions => Set<RoomRolePermissionEntity>();
     public DbSet<LeaderboardChannelMetaEntity> LeaderboardChannelMeta => Set<LeaderboardChannelMetaEntity>();
     public DbSet<RoomBookmarkEntity> RoomBookmarks => Set<RoomBookmarkEntity>();
     public DbSet<RoomDataBlobEntity> RoomDataBlobs => Set<RoomDataBlobEntity>();
@@ -134,6 +135,14 @@ public class DorkNetDbContext(DbContextOptions<DorkNetDbContext> options) : DbCo
             e.HasIndex(p => new { p.ClubId, p.MembershipType }).IsUnique();
         });
 
+        // One cell per (room, sub-room, role, permission): the sub-room
+        // permissions PUT upserts the cells it was sent.
+        modelBuilder.Entity<RoomRolePermissionEntity>(e =>
+        {
+            e.HasKey(p => p.Id);
+            e.HasIndex(p => new { p.RoomId, p.SubRoomId, p.Role, p.Permission }).IsUnique();
+        });
+
         modelBuilder.Entity<ClubAdditionalImageEntity>(e =>
         {
             e.HasKey(i => i.Id);