Function routing_block 

pub fn routing_block(workflow: Workflow) -> String

The routing block for one workflow mode: the whole of target-side governance, authored as blocks/agents-block.md.in and never grown into a method chapter.

Markers included, without a trailing newline and with its scope token unrendered: the template with the mode’s one orientation line substituted, everything else — the agent-boundary line included — byte-identical across modes.