fastmcp-on-duplicate-error-inline-server-py-wins-over-module

When FastMCP is configured with on_duplicate=‘error’, inline @mcp.tool() definitions in server.py take precedence over module-level tool registrations. If the same tool name exists in both server.py and a module file, only the inline version is active — the module version is silently skipped. Always audit server.py inline tools first when debugging unexpected tool behavior.