beads: add v15 roadmap skeleton

beads: refine backlog and rust migration planning

ci: split installed-runtime and cold install smoke

beads: narrow backend exploration planning

ci: schedule nightly integration and bead checks

ci: keep cold install smoke off push runs

ci: extend cold flake install timeout

update: only print runtime path changes in verbose mode

cli: restore fuzzy yzx edit queries

setup: keep yzx wrapper on runtime current

cli: simplify yzx edit selection

shells: stop pinning nushell yzx to old runtimes

cli: add fuzzy yzx edit target selection

runtime: restart with refreshed cli after updates

tests: surface default suite profile in budget CI