feat: Support .ducklake() and .datatable() in agent workers (#8697)

* Update clients to check for agent workers

* fixes

* typescript uses 127.0.0.1

* Refresh system prompts

* fix: check both localhost and 127.0.0.1 in workerHasInternalServer detection

Both Python and TypeScript clients now check for both hostnames to avoid
silent breakage if BASE_INTERNAL_URL uses one or the other. Also adds
return type annotation to the Python method.

Co-authored-by: Diego Imbert <diegoimbert@users.noreply.github.com>

* refresh system prompts

* nit localhost regex boundary

* fix: use provider.language instead of undefined bare language in sqlUtils

The language variable was referenced as a bare identifier in the fetch
calls, resolving to undefined at runtime instead of reading from
provider.language.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com>
Co-authored-by: Diego Imbert <diegoimbert@users.noreply.github.com>
Co-authored-by: Ruben Fiszel <ruben@windmill.dev>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

python-client/wmill/wmill/client.py

@@ -66,6 +66,11 @@ class Windmill:
             f"workspace required as an argument or as WM_WORKSPACE environment variable"
         )
 
+    def worker_has_internal_server(self) -> bool:
+        return bool(
+            re.match(r"^https?://(localhost|127\.0\.0\.1)(:|/|$)", self.base_url or "")
+        )
+
     def get_mocked_api(self) -> Optional[dict]:
         mocked_path = os.environ.get("WM_MOCKED_API_FILE")
         if not mocked_path:
@@ -326,8 +331,15 @@ class Windmill:
         language: str,
         args: dict = None,
     ) -> Any:
-        """Run a script on the current worker without creating a job"""
-        endpoint = f"/w/{self.workspace}/jobs/run_inline/preview"
+        """Run a script on the current worker without creating a job.
+
+        On agent workers (no internal server), falls back to running a normal
+        preview job and waiting for the result.
+        """
+        if self.worker_has_internal_server():
+            endpoint = f"/w/{self.workspace}/jobs/run_inline/preview"
+        else:
+            endpoint = f"/w/{self.workspace}/jobs/run_wait_result/preview"
         body = {
             "content": content,
             "language": language,