feat: add client-side title leveling option and integrate regeneration of title leveled outputs

mineru/cli/gradio_app.py

@@ -39,6 +39,7 @@ from mineru.cli.common import (
 )
 from mineru.cli import api_client as _api_client
 from mineru.cli.output_paths import resolve_parse_dir
+from mineru.cli.title_level_postprocess import regenerate_title_leveled_outputs
 from mineru.cli.vlm_preload import resolve_gradio_local_api_cli_args
 from mineru.cli.visualization import VisualizationJob, run_visualization_job
 
@@ -827,6 +828,11 @@ def is_image_analysis_option_visible(backend):
     return backend.startswith("vlm") or backend.startswith("hybrid")
 
 
+def should_use_client_side_title_leveling(file_suffix, client_side_title_leveling):
+    """判断当前 Gradio 任务是否需要执行客户端标题分级后处理。"""
+    return client_side_title_leveling and file_suffix not in office_suffixes
+
+
 def create_gradio_run_paths(file_path, output_root="./output"):
     run_id = f"{time.strftime('%y%m%d_%H%M%S')}_{uuid.uuid4().hex[:8]}_{safe_stem(Path(file_path).stem)}"
     run_root = Path(output_root) / "gradio" / run_id
@@ -959,6 +965,7 @@ async def _run_to_markdown_job(
     backend="pipeline",
     url=None,
     api_url=None,
+    client_side_title_leveling=False,
     status_callback: Callable[[str], None] | None = None,
 ):
     if file_path is None:
@@ -971,6 +978,10 @@ async def _run_to_markdown_job(
     normalized_language = normalize_language(language)
     file_path = str(file_path)
     file_suffix = Path(file_path).suffix.lower().lstrip('.')
+    use_client_side_title_leveling = should_use_client_side_title_leveling(
+        file_suffix,
+        client_side_title_leveling,
+    )
     parse_method = resolve_parse_method(file_path, is_ocr, backend)
     run_root, extract_root, archive_zip_path = create_gradio_run_paths(file_path)
     run_root.mkdir(parents=True, exist_ok=True)
@@ -985,10 +996,10 @@ async def _run_to_markdown_job(
         server_url=url,
         start_page_id=0,
         end_page_id=end_pages - 1,
-        return_md=True,
+        return_md=not use_client_side_title_leveling,
         return_middle_json=True,
-        return_model_output=True,
-        return_content_list=True,
+        return_model_output=not use_client_side_title_leveling,
+        return_content_list=not use_client_side_title_leveling,
         return_images=True,
         response_format_zip=True,
         return_original_file=True,
@@ -1062,6 +1073,9 @@ async def _run_to_markdown_job(
         parse_method,
         allow_office_fallback=True,
     )
+    if use_client_side_title_leveling:
+        regenerate_title_leveled_outputs(local_md_dir, file_name)
+
     preview_pdf_path = maybe_generate_local_preview(
         extract_root=extract_root,
         file_name=file_name,
@@ -1101,6 +1115,7 @@ async def stream_to_markdown(
     backend="pipeline",
     url=None,
     api_url=None,
+    client_side_title_leveling=False,
 ):
     status_state = StatusPanelState()
     job_task: asyncio.Task | None = None
@@ -1130,6 +1145,7 @@ async def stream_to_markdown(
                 backend=backend,
                 url=url,
                 api_url=api_url,
+                client_side_title_leveling=client_side_title_leveling,
                 status_callback=enqueue_status,
             )
         )
@@ -1489,6 +1505,13 @@ def update_doc_show(file_path):
     help="Preload the local VLM model when gradio starts a local mineru-api service.",
     default=False,
 )
+@click.option(
+    '--client-side-title-leveling',
+    'client_side_title_leveling',
+    type=bool,
+    help="Enable local title leveling after receiving finalized PDF middle json from the API service.",
+    default=False,
+)
 @click.option(
     '--latex-delimiters-type',
     'latex_delimiters_type',
@@ -1501,7 +1524,8 @@ def main(ctx,
         example_enable,
         http_client_enable,
         api_enable, max_convert_pages,
-        server_name, server_port, api_url, enable_vlm_preload, latex_delimiters_type, **kwargs
+        server_name, server_port, api_url, enable_vlm_preload,
+        client_side_title_leveling, latex_delimiters_type, **kwargs
 ):
 
     # 创建 i18n 实例，支持中英文
@@ -1731,6 +1755,7 @@ def main(ctx,
             backend=backend,
             url=url,
             api_url=api_url,
+            client_side_title_leveling=client_side_title_leveling,
         ):
             update = (
                 render_status_steps_html(update[0], i18n, locale=request_locale),