~x-ai/grok-latest → A (3:1)

Commit A deletes an unreliable ~1800-line keystroke graph parser plus race-prone JS/tests and replaces it with a simple paste-and-go URL extractor that redirects to ranking—removing walk-on complexity and fixing the actual UX failure. Commit B is a solid URL/routing harden (room path encoding + YouTube/query identity normalization) but is more incremental infrastructure compared to A’s decisive simplification.