aspirational-future-pointers-accumulate-as-dead-refs

Over time, skills accumulate ‘Future:’ lines and bullet-list refs (e.g., - `docs/X.md` — description) pointing to documents that were never created. These 189 dead pointers across 65 skills represent phantom progressive-disclosure intent. Law 10 (dormant = removed) applies: strip them unless the doc exists. Prose-pointer lint now enforces this going forward.