Cache provider catalog lookups

crates/aether-data/migrations/mysql/20260527000000_add_provider_key_name_hotspot_index.sql

@@ -0,0 +1,15 @@
+SET @aether_provider_key_name_index_sql := IF(
+    (
+        SELECT COUNT(*)
+        FROM information_schema.statistics
+        WHERE table_schema = DATABASE()
+          AND table_name = 'provider_api_keys'
+          AND index_name = 'idx_provider_api_keys_provider_name_id'
+    ) = 0,
+    'CREATE INDEX idx_provider_api_keys_provider_name_id ON provider_api_keys (provider_id, name, id)',
+    'DO 0'
+);
+
+PREPARE aether_provider_key_name_index_stmt FROM @aether_provider_key_name_index_sql;
+EXECUTE aether_provider_key_name_index_stmt;
+DEALLOCATE PREPARE aether_provider_key_name_index_stmt;