SDK: Prompt-based locator (#4027)

skyvern/forge/sdk/routes/sdk.py

@@ -199,6 +199,11 @@ async def run_sdk_action(
                 data=action.data,
             )
             result = extract_result
+        elif action.type == "locate_element":
+            xpath_result = await page_ai.ai_locate_element(
+                prompt=action.prompt,
+            )
+            result = xpath_result
     finally:
         skyvern_context.reset()