feat: add invite code validity controls

- Add invite code starts/expires fields across contracts, API, Spacetime bindings, and admin UI
- Enforce pending/expired invite code redemption behavior and expose admin status
- Add admin write-operation confirmation guard and documentation
- Add invite code contract/runtime tests

server-rs/crates/spacetime-module/src/migration.rs

@@ -1,3 +1,4 @@
+use crate::runtime::analytics_date_dimension::analytics_date_dimension;
 use crate::*;
 use serde::{Deserialize, Serialize};
 use spacetimedb_lib::sats::de::serde::DeserializeWrapper;
@@ -161,6 +162,7 @@ macro_rules! migration_tables {
             user_browse_history,
             profile_dashboard_state,
             profile_wallet_ledger,
+            analytics_date_dimension,
             tracking_event,
             tracking_daily_stat,
             profile_task_config,