fix(ingest): prevent mutable options mutation in batch/multi-example calls

Deep-copy **options in ingest_examples and batch_public_apis so that
mutable values (e.g. params dicts) are not shared across iterations.
Add rate_limit_delay to the config_only_key strip list in ingest_public_api
so it is not forwarded twice when passed via kwargs.

semantica/ingest/methods.py

@@ -552,6 +552,7 @@ def ingest_public_api(
             "delay",
             "fail_fast",
             "max_retries",
+            "rate_limit_delay",
             "validate_no_auth",
         ):
             request_kwargs.pop(config_only_key, None)

semantica/ingest/public_api_ingestor.py

@@ -565,7 +565,7 @@ class PublicAPIIngestor(RESTIngestor):
 
     def ingest_examples(self, names: List[str], **options) -> List[APIData]:
         """Ingest multiple pre-configured public API examples."""
-        return [self.ingest_example(name, **options) for name in names]
+        return [self.ingest_example(name, **copy.deepcopy(options)) for name in names]
 
     def batch_public_apis(
         self,
@@ -578,7 +578,7 @@ class PublicAPIIngestor(RESTIngestor):
         for endpoint in endpoints:
             try:
                 results.append(
-                    self.ingest_public_api(endpoint, method=method, **options)
+                    self.ingest_public_api(endpoint, method=method, **copy.deepcopy(options))
                 )
             except Exception as exc:
                 self.logger.warning(f"Failed to fetch public API {endpoint}: {exc}")