Tabbed online accounts with character and party columns

[eduardosmaniotto]

Reworks the /logged-in (Online accounts) page:

• Three tabs under the existing header: Players (default), Off-level Players (only when the /offlevel command plugin is active), Bot Players (only when the bot feature plugin is active).
• New Character column on all tabs. Resolves via in-process game contexts; falls back to — in distributed deployments.
• New Party column: badge showing party master + member count, with a deterministic per-party color so members are visually grouped. Ordering is partied-first → master → account → character, so party members stay contiguous.
• Bots tab is read-only (no Stop button: bots are tracked inside the private BotManager, so DisconnectAccountAsync cannot stop them cleanly — that would leave stale entries behind).

How

• LoggedInAccount / OfflineAccount extended with CharacterName, PartyMaster, PartySize; new BotAccount + BotAccountService following the existing IDataService<T> pattern.
• Shared OnlineAccountOrdering.OrderPartyGrouped<T>() over IPartyGroupedAccount instead of triplicated sort logic.
• Shared PartyBadge.razor component instead of string-built HTML.
• Cleanup: short type names, named PlayerInfo record instead of tuple, dead bot filter in OfflineAccountService replaced with an explanatory comment.