feat: add all_texts property to lazily cache document texts for retrieval

Co-authored-by: aider (openrouter/anthropic/claude-sonnet-4) <[email protected]>

Author: thiswillbeyourgithub

wdoc/wdoc.py

@@ -1930,6 +1930,18 @@ def output_handler(text: str) -> str:
 
             return output
 
+    @property
+    def all_texts(self) -> List[str]:
+        """
+        Lazily create and cache all_texts from loaded_embeddings.
+        This property is only computed when needed by specific retrievers (KNN, SVM).
+        """
+        if not hasattr(self, '_all_texts'):
+            self._all_texts = [
+                v.page_content for k, v in self.loaded_embeddings.docstore._dict.items()
+            ]
+        return self._all_texts
+
     @staticmethod
     @set_parse_doc_help_md_as_docstring
     def parse_doc(