refactor: rename project from AgenticRAG to DocuMente

## Changes
- Update all references from AgenticRAG to DocuMente
- Update README.md with new project description and structure
- Update LICENSE with new project name
- Update API title and descriptions in main.py
- Update frontend components (Layout, Login, Dashboard, Settings)
- Update static HTML page
- Update all documentation files (prd-v2.md, frontend-plan.md, etc.)
- Update test files with new project name
- Update docker-compose.yml, Dockerfile, requirements.txt

## SEO Benefits
- DocuMente combines 'Documento' and 'Mente' (Italian for Document and Mind)
- Memorable and brandable name
- Reflects the core functionality: AI-powered document intelligence

🎉 Project officially renamed to DocuMente!

tests/unit/test_agentic_rag/conftest.py

@@ -1,4 +1,4 @@
-"""Shared fixtures for AgenticRAG unit tests."""
+"""Shared fixtures for DocuMente unit tests."""
 
 import pytest
 from unittest.mock import Mock, AsyncMock, MagicMock, patch
@@ -13,7 +13,7 @@ sys.path.insert(0, str(Path(__file__).parent.parent.parent.parent.parent / "src"
 def mock_settings():
     """Create a mock Settings object."""
     settings = Mock()
-    settings.app_name = "AgenticRAG"
+    settings.app_name = "DocuMente"
     settings.app_version = "2.0.0"
     settings.debug = True
     settings.cors_origins = ["http://localhost:3000"]

tests/unit/test_agentic_rag/test_api/test_chat.py

@@ -44,7 +44,7 @@ class TestChatStream:
         response = client.post("/chat/stream", json={"message": "Hello"})
         content = response.content.decode("utf-8")
 
-        assert "data: Hello from AgenticRAG!" in content
+        assert "data: Hello from DocuMente!" in content
         assert "data: Streaming not fully implemented yet." in content
         assert "data: [DONE]" in content
 

tests/unit/test_agentic_rag/test_core/test_config.py

@@ -15,7 +15,7 @@ class TestSettings:
 
         settings = Settings()
 
-        assert settings.app_name == "AgenticRAG"
+        assert settings.app_name == "DocuMente"
         assert settings.app_version == "2.0.0"
         assert settings.debug is True
         assert settings.qdrant_host == "localhost"

tests/unit/test_agentic_rag/test_core/test_llm_factory.py

@@ -131,7 +131,7 @@ class TestOpenRouterClient:
         assert "HTTP-Referer" in headers
         assert "X-Title" in headers
         assert headers["HTTP-Referer"] == "https://agenticrag.app"
-        assert headers["X-Title"] == "AgenticRAG"
+        assert headers["X-Title"] == "DocuMente"
 
     @pytest.mark.asyncio
     async def test_invoke_success(self, client):