fix: cursor() and execStream() silently dropped filterIn() and vector text queries

These methods used toDescriptor() which doesn't resolve deferred subqueries.
Now throws a clear error directing users to stream() or collect() instead.

Author: teamchong

src/client.ts

@@ -766,6 +766,9 @@ export class DataFrame<T extends Row = Row> {
     if (!this._executor.cursor) {
       throw new Error("cursor() requires an executor with cursor support");
     }
+    if (this._deferredSubqueries.length > 0 || this._vectorEncoder) {
+      throw new Error("cursor() cannot resolve filterIn() subqueries or vector text queries — use stream() or collect() instead");
+    }
     return this._executor.cursor(this.toDescriptor(), opts?.batchSize ?? 1000);
   }
 
@@ -793,6 +796,9 @@ export class DataFrame<T extends Row = Row> {
     if (!this._executor.executeStream) {
       throw new Error("execStream() requires a remote executor with streaming support");
     }
+    if (this._deferredSubqueries.length > 0 || this._vectorEncoder) {
+      throw new Error("execStream() cannot resolve filterIn() subqueries or vector text queries — use stream() or collect() instead");
+    }
     return this._executor.executeStream(this.toDescriptor());
   }