feat: add js_instructions parameter to ZenRowsScraper.scrape()

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

src/vl_apify_shared/zenrows.py

@@ -1,3 +1,4 @@
+import json
 import time
 from dataclasses import dataclass, field
 from typing import Optional
@@ -23,6 +24,7 @@ class ZenRowsScraper:
         wait: Optional[int] = None,
         wait_for: Optional[str] = None,
         premium_proxy: bool = False,
+        js_instructions: Optional[list] = None,
     ):
         """Scrape a URL using ZenRows scraping SDK.
 
@@ -32,6 +34,7 @@ class ZenRowsScraper:
             wait: milliseconds to wait after page load
             wait_for: css selector to wait for
             premium_proxy: use residential proxy (ZenRows premium_proxy=true)
+            js_instructions: list of ZenRows instruction dicts (evaluate, wait_for, click, etc.)
         """
         self.logger.debug(f"ZenRows scraping url: {url}...")
         params: dict = {}
@@ -43,6 +46,8 @@ class ZenRowsScraper:
             params["wait"] = str(wait)
         if wait_for is not None:
             params["wait_for"] = wait_for
+        if js_instructions is not None:
+            params["js_instructions"] = json.dumps(js_instructions)
         start = time.monotonic()
         response = self.client.get(url, params=params)
         elapsed_time = round((time.monotonic() - start) * 1000)