feat(api): GET /api/admin/search endpoint + regenerated client types

Expose full-text search over catalogue objects via a new admin endpoint
backed by the Meilisearch SearchClient. Validates visibility filter values,
short-circuits on empty queries, clamps pagination, and returns 503 when
search is not configured. Registered in OpenAPI; schema.d.ts regenerated.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

crates/api/src/openapi.rs

@@ -1,7 +1,9 @@
 use axum::{Json, Router, extract::State, routing::get};
 use utoipa::OpenApi;
 
-use crate::{AppState, admin, admin_authorities, admin_objects, admin_vocab, health, public};
+use crate::{
+    AppState, admin, admin_authorities, admin_objects, admin_search, admin_vocab, health, public,
+};
 
 #[derive(OpenApi)]
 #[openapi(
@@ -26,6 +28,7 @@ use crate::{AppState, admin, admin_authorities, admin_objects, admin_vocab, heal
         admin_vocab::create_vocabulary,
         admin_vocab::list_terms,
         admin_vocab::add_term,
+        admin_search::search_objects,
         admin_authorities::list_authorities,
         admin_authorities::create_authority
     ),
@@ -50,6 +53,8 @@ use crate::{AppState, admin, admin_authorities, admin_objects, admin_vocab, heal
         admin_vocab::LabelInput,
         admin_vocab::TermView,
         admin_vocab::CreatedId,
+        admin_search::SearchHitView,
+        admin_search::SearchResultsView,
         admin_authorities::AuthorityView,
         admin_authorities::NewAuthorityRequest
     )),