Add diagnostic functionality to debug GraphRAG mode

app.py

@@ -265,6 +265,18 @@ def api_query(query: str, mode: str = "local", book_id: str = None):
     finally:
         loop.close()
 
+# Diagnostic function
+def diagnostic_info():
+    """Return diagnostic information about the system"""
+    return {
+        "nano_graphrag_available": NANO_GRAPHRAG_AVAILABLE,
+        "available_books": available_books,
+        "current_book": borges_rag.current_book,
+        "working_directory": os.getcwd(),
+        "directory_contents": [f for f in os.listdir('.') if os.path.isdir(f)],
+        "book_status": book_status
+    }
+
 # Gradio app
 with gr.Blocks(
     title="Borges Graph - GraphRAG Explorer",
@@ -325,6 +337,10 @@ with gr.Blocks(
     with gr.Accordion("🔧 Réponse JSON (pour développeurs)", open=False):
         json_output = gr.Code(language="json", label="JSON Response")
 
+    with gr.Accordion("🔍 Diagnostic système", open=False):
+        diag_btn = gr.Button("Obtenir diagnostic")
+        diag_output = gr.Code(language="json", label="Diagnostic Info")
+
     # Event handlers
     search_btn.click(
         fn=query_interface,
@@ -338,6 +354,11 @@ with gr.Blocks(
         outputs=[answer_output, json_output, summary_output]
     )
 
+    diag_btn.click(
+        fn=lambda: json.dumps(diagnostic_info(), indent=2, ensure_ascii=False),
+        outputs=[diag_output]
+    )
+
 # Launch the app
 if __name__ == "__main__":
     app.launch(