feat: add Tavily MCP server to miroflow-tools library

[ParakhJaggi]

Summary

• Added a new tavily_mcp_server.py FastMCP server in the miroflow-tools library, providing a tavily_search tool as a parallel alternative to the existing Serper-based google_search tool.
• The new server follows the same retry/error-handling patterns as serper_mcp_server.py (tenacity retries, JSON error responses, if __name__ == '__main__': mcp.run() entry point).
• Added tavily-python>=0.5.0 dependency to pyproject.toml.

Files Changed

• libs/miroflow-tools/src/miroflow_tools/mcp_servers/tavily_mcp_server.py (new file)
• libs/miroflow-tools/pyproject.toml (added dependency)

Dependency Changes

• Added tavily-python>=0.5.0 to libs/miroflow-tools/pyproject.toml

Environment Variable Changes

• New: TAVILY_API_KEY — read by tavily_mcp_server.py to authenticate with the Tavily API

Notes for Reviewers

• Existing Serper search server and its dependencies/env vars are unchanged.
• The Tavily tool exposes parameters for search_depth, topic, include_domains, exclude_domains, and time_range to leverage Tavily's filtering capabilities.

🤖 Generated with Claude Code

Automated Review

• Passed after 2 attempt(s)
• Final review: The Tavily MCP server implementation is a clean additive migration. The core logic is sound, the dependency is properly added to pyproject.toml, and the code style is consistent with the existing serper_mcp_server.py. Attempt 2 correctly fixed the retry exception types to use httpx exceptions (httpx.ConnectError / httpx.TimeoutException) rather than Python built-ins. No regressions were introduced. Three minor issues remain: httpx and tenacity are used as direct imports but not declared as explicit dependencies in pyproject.toml (both are transitively available—httpx via tavily-python, and tenacity is a pre-existing undeclared dep already used in serper_mcp_server.py); the TavilyClient is instantiated on every call rather than being module-level; and there is no .env.example or README update documenting the new TAVILY_API_KEY variable (though an inline comment was added).