Add Library RAG project and cleanup root directory

- Add complete Library RAG application (Flask + MCP server)
  - PDF processing pipeline with OCR and LLM extraction
  - Weaviate vector database integration (BGE-M3 embeddings)
  - Flask web interface with search and document management
  - MCP server for Claude Desktop integration
  - Comprehensive test suite (134 tests)

- Clean up root directory
  - Remove obsolete documentation files
  - Remove backup and temporary files
  - Update autonomous agent configuration

- Update prompts
  - Enhance initializer bis prompt with better instructions

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

generations/library_rag/utils/pdf_uploader.py

@@ -0,0 +1,31 @@
+"""Upload de fichiers PDF vers l'API Mistral."""
+
+from mistralai import Mistral
+
+
+def upload_pdf(client: Mistral, file_bytes: bytes, filename: str) -> str:
+    """Upload un PDF vers Mistral et retourne l'URL signée.
+
+    Args:
+        client: Client Mistral authentifié
+        file_bytes: Contenu binaire du fichier PDF
+        filename: Nom du fichier
+
+    Returns:
+        URL signée du document uploadé
+    """
+    # Upload du fichier
+    uploaded = client.files.upload(
+        file={
+            "file_name": filename,
+            "content": file_bytes,
+        },
+        purpose="ocr",
+    )
+    
+    # Récupération de l'URL signée
+    signed = client.files.get_signed_url(file_id=uploaded.id)
+    
+    return signed.url
+
+