add configurable gift menu overlays

Add tenant-scoped gift menu settings, catalog-backed triggers, infinite OBS rendering, and guard assets. Normalize legacy and protobuf gift values for blind-box, battery-tier, and transaction-aware matching.

apps/server-rust/src/auth.rs

@@ -27,6 +27,7 @@ use crate::{
     credentials::{CookieCloudCredentials, CookieCloudSecrets, normalize_cookiecloud_host},
     db::{Db, DbError},
     gift_effect::{GIFT_EFFECT_KIND, GIFT_EFFECT_NAME, GiftEffectSettings},
+    gift_menu::{GIFT_MENU_KIND, GIFT_MENU_NAME, GiftMenuSettings},
     i18n,
     overlay::OverlaySettings,
     song_request::{SONG_REQUEST_KIND, SONG_REQUEST_NAME, SongRequestSettings},
@@ -668,6 +669,23 @@ impl AuthService {
                 ],
             )
             .await?;
+        let menu_component_id = Uuid::new_v4();
+        let menu_settings = serde_json::to_value(GiftMenuSettings::default())
+            .expect("GiftMenuSettings is always JSON serializable");
+        transaction
+            .execute(
+                "INSERT INTO component_instances \
+                 (id,owner_user_id,kind,name,settings,settings_version,enabled) \
+                 VALUES($1,$2,$3,$4,$5,1,true)",
+                &[
+                    &menu_component_id,
+                    &user_id,
+                    &GIFT_MENU_KIND,
+                    &GIFT_MENU_NAME,
+                    &menu_settings,
+                ],
+            )
+            .await?;
         transaction
             .execute(
                 "DELETE FROM pending_registrations WHERE id=$1",