feat: web dashboard and playground work

The NexusDashboard-parity dashboard (dDashboardServer) and everything built on it on the experimental branch:
accounts, characters, properties and moderation tools, permissions shared with in-game slash commands, economy
reports, World 3D and property 3D views with client scenery, scheduled events (features, vanity changes, live
events, announcements, restarts), vanity files and events, the CDClient browser, the message inspector with saved
captures, chat filter tools, community challenges, live ops, the AI moderator helper, and the server-side changes
they need.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

dDashboardServer/routes/CharacterRestore.h

@@ -0,0 +1,9 @@
+#pragma once
+
+/**
+ * Giving a character back what it lost since one of its snapshots: the difference from now (per inventory, with item
+ * names), and mailing chosen items (or a whole item set) back. Mail reaches the player whether they are in game or
+ * not, and their saved data is never touched. Only what the character is still missing is sent: what it holds now,
+ * what waits in its mailbox and what someone else now holds are taken off first (InventoryRestore.h).
+ */
+void RegisterCharacterRestoreRoutes();