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>

migrations/dlu/sqlite/28_player_stats_daily.sql

@@ -0,0 +1,9 @@
+/* Daily totals of player statistics. See the MySQL migration. */
+CREATE TABLE IF NOT EXISTS player_stats_daily (
+    day INTEGER NOT NULL,
+    zone INTEGER NOT NULL,
+    stat INTEGER NOT NULL,
+    gm INTEGER NOT NULL DEFAULT 0,
+    amount BIGINT NOT NULL DEFAULT 0,
+    PRIMARY KEY (day, zone, stat, gm)
+);