Follow-through on the quinn-mcp fleet key rename (bc186901): port vars
(QUINN_MCP_DATA_PORT → QUINN_MCP_ANALYTICS_PORT in .env.ports,
quinn.mcp.data → quinn.mcp.analytics in ports.yaml, both still :3914) and the
remaining quinn-mcp@data → quinn-mcp@analytics references in the server header
comment, edge-visitors-aggregate.sh, and mcp-servers.md.