fix(kingbase): preserve query schema context

apps/desktop/src/lib/__tests__/database/jdbcDialect.spec.ts

@@ -85,6 +85,10 @@ describe("query execution schema", () => {
     expect(connectionQueryExecutionSchema({ db_type: "postgres" }, "app", "reporting", false)).toBe("reporting");
   });
 
+  it("prefers an explicit schema for Kingbase query execution", () => {
+    expect(connectionQueryExecutionSchema({ db_type: "kingbase" }, "qinzhou", "sdy_smartsite", false)).toBe("sdy_smartsite");
+  });
+
   it("does not send a schema for MySQL database context", () => {
     expect(connectionQueryExecutionSchema({ db_type: "mysql" }, "app", undefined, false)).toBeUndefined();
   });

apps/desktop/src/lib/history/historyRestoreTarget.ts

@@ -0,0 +1,19 @@
+import type { HistoryEntry } from "@/lib/backend/api";
+import { resolveDefaultDatabase } from "@/lib/database/defaultDatabase";
+import type { ConnectionConfig, QueryTab } from "@/types/database";
+
+export interface HistorySqlRestoreTarget {
+  connectionId: string;
+  database: string;
+  schema?: string;
+}
+
+export function resolveHistorySqlRestoreTarget(options: { entry: HistoryEntry; activeTab?: QueryTab; firstConnectionId?: string; getConfig: (connectionId: string) => ConnectionConfig | undefined }): HistorySqlRestoreTarget | null {
+  const { entry, activeTab, firstConnectionId, getConfig } = options;
+  const connectionId = entry.connection_id || activeTab?.connectionId || firstConnectionId;
+  if (!connectionId) return null;
+  const config = getConfig(connectionId);
+  const database = entry.database || activeTab?.database || (config ? resolveDefaultDatabase(config, []) : "");
+  const schema = activeTab?.connectionId === connectionId && activeTab.database === database ? activeTab.schema : undefined;
+  return { connectionId, database: database || "", schema };
+}