Workflow catalog (moved)

Each workflow's input/output/trigger contract now lives in its own route file — one small read per candidate instead of a whole catalog:

references/routes/<workflow>.md — e.g. routes/product-launch-video.md, routes/general-video.md, routes/remotion-to-hyperframes.md.

The same file carries that route's interview entry (must-haves, conditionals, deferred asks, run-shape), so confirming a route is exactly one read.