fix: Add nano-graphrag source code to Space

- Copy complete nano-graphrag source directory to Space
- Install nano-graphrag from local source (-e ./nano-graphrag)
- Revert to normal import logic (no forced True)
- This should fix nano-graphrag import issues

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

app.py

@@ -10,28 +10,15 @@ import shutil
 import zipfile
 import requests
 
-# Force nano_graphrag availability for testing
+# Try to import nano_graphrag, with fallback for demo
 try:
     from nano_graphrag import GraphRAG, QueryParam
     from nano_graphrag._llm import gpt_4o_mini_complete
     NANO_GRAPHRAG_AVAILABLE = True
     print("✅ nano-graphrag imported successfully")
 except ImportError as e:
-    print(f"⚠️ nano-graphrag import failed: {e}")
-    NANO_GRAPHRAG_AVAILABLE = True  # Force True for testing
-    # Create dummy classes for demo
-    class GraphRAG:
-        def __init__(self, *args, **kwargs):
-            pass
-        async def aquery(self, query, param=None):
-            return "Demo response"
-
-    class QueryParam:
-        def __init__(self, *args, **kwargs):
-            pass
-
-    def gpt_4o_mini_complete(*args, **kwargs):
-        return "Demo completion"
+    NANO_GRAPHRAG_AVAILABLE = False
+    print(f"⚠️ nano-graphrag not available: {e}")
 
 # Configuration pour l'API externe
 BORGES_API_URL = os.getenv("BORGES_API_URL", "https://borges-library.vercel.app/api/graphrag")

nano-graphrag

@@ -0,0 +1 @@
+Subproject commit 01f429e8c562e8f19b2449f90cec9a4a67d4f6ee

requirements.txt

@@ -1,17 +1,17 @@
 gradio>=4.0.0
 openai>=1.0.0
-networkx>=3.0
-numpy>=1.21.0,<2.0
 tiktoken>=0.4.0
 aiohttp>=3.8.0
 requests>=2.25.0
 tenacity>=8.0.0
 future>=1.0.0
 xxhash>=3.0.0
-hnswlib>=0.7.0
-nano-vectordb>=0.0.4
+numpy>=1.21.0,<2.0
+networkx>=3.0
 scipy>=1.9.0,<2.0.0
 scikit-learn>=1.1.0
-gensim>=4.0.0,<5.0.0
-graspologic>=3.0.0
-git+https://github.com/gusye1234/nano-graphrag.git
+hnswlib>=0.7.0
+nano-vectordb>=0.0.4
+dspy-ai>=3.0.0
+neo4j>=5.0.0
+-e ./nano-graphrag