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/WorldView.h

@@ -0,0 +1,15 @@
+#pragma once
+
+struct PlayerPositions;
+
+/**
+ * The live 3D world view (/world3d): a zone's terrain, scene objects, paths and spawn points with players moving on
+ * it, plus replays of where players went (position samples kept for position_history_days, staff only) and a
+ * timelapse of the economy map events per day.
+ */
+namespace WorldView {
+	void RegisterRoutes();
+
+	// A world server reported its players' positions: keep some of them for replays (throttled, written in batches)
+	void RecordPositions(const PlayerPositions& positions);
+}