Fix: markdown parser in pipeline (#14032)

### What problem does this PR solve?

Fix: markdown parser in pipeline

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

rag/flow/parser/parser.py

@@ -936,6 +936,7 @@ class Parser(ProcessBase):
             delimiter=conf.get("delimiter"),
             return_section_images=True,
         )
+
         if conf.get("output_format") == "json":
             json_results = []
 
@@ -954,6 +955,16 @@ class Parser(ProcessBase):
                 json_result["doc_type_kwd"] = "image" if json_result.get("image") is not None else "text"
                 json_results.append(json_result)
 
+            for table in tables:
+                table_text = table[0][1] if table and table[0] else ""
+                if table_text:
+                    json_results.append(
+                        {
+                            "text": table_text,
+                            "doc_type_kwd": "table",
+                        }
+                    )
+
             enhance_media_sections_with_vision(
                 json_results,
                 self._canvas._tenant_id,
@@ -962,7 +973,9 @@ class Parser(ProcessBase):
             )
             self.set_output("json", json_results)
         else:
-            self.set_output("text", "\n".join([section_text for section_text, _ in sections]))
+            texts = [section_text for section_text, _ in sections if section_text]
+            texts.extend(table[0][1] for table in tables if table and table[0] and table[0][1])
+            self.set_output("text", "\n".join(texts))
 
     def _code(self, name, blob, **kwargs):
         """Parse text and source code files as plain text chunks."""

web/src/pages/agent/constant/pipeline.tsx

@@ -39,7 +39,7 @@ export enum EmailOutputFormat {
 }
 
 export enum TextMarkdownOutputFormat {
-  Text = 'text',
+  Text = 'json',
 }
 
 export enum TextJsonOutputFormat {