REQ-EXEC-031 — toolkit-catalog foundry bundle

Source: RD-0006 video analysis (Matt Pocock skills repo — "skills are the new package.json"). Extends REQ-EXEC-024 (plugin .zip / --plugin-url distribution, scored 3.4, no Stage 2 decision yet). Net-new vs. 024: a curated toolkit-catalog bundle + a CONTEXT.md token-discipline convention shipped with every delivered digital talent, framed by the foundry delivery model.