Add OpenAI Deep Research MCP server

- FastMCP server with deep_research and deep_research_info tools
- OpenAI Responses API integration with background polling
- Configurable model via DEEP_RESEARCH_MODEL env var
- Default: o4-mini-deep-research (faster/cheaper)
- Optional FastAPI backend for standalone use
- Tested successfully: 80s query, 20 web searches, 4 citations

pyproject.toml

@@ -0,0 +1,24 @@
+[project]
+name = "mcp-deep-research"
+version = "0.1.0"
+description = "MCP Server for OpenAI Deep Research API"
+readme = "README.md"
+requires-python = ">=3.11"
+dependencies = [
+    "mcp[cli]>=1.0.0",
+    "openai>=1.0.0",
+    "fastapi>=0.100.0",
+    "uvicorn>=0.23.0",
+    "httpx>=0.24.0",
+    "python-dotenv>=1.0.0",
+]
+
+[project.scripts]
+mcp-deep-research = "mcp_server.server:main"
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["mcp_server", "backend"]