feat(export): add table selection to database export

src/lib/databaseExportSelection.ts

@@ -0,0 +1,8 @@
+export function buildSelectedTablesPayload(allTables: string[], selectedTables: string[]): string[] | undefined {
+  if (allTables.length > 0 && selectedTables.length === allTables.length) {
+    return undefined;
+  }
+
+  const selected = new Set(selectedTables);
+  return allTables.filter((table) => selected.has(table));
+}

src/lib/tauri.ts

@@ -776,6 +776,7 @@ export interface DatabaseExportRequest {
   database: string;
   schema: string;
   filePath: string;
+  selectedTables?: string[];
   includeStructure: boolean;
   includeData: boolean;
   includeObjects: boolean;