chore: additional cleanup

chore: clean up

feat: add presets storage

feat: add workflow effect editing

feat: tidy effect selector state and rendering

feat: add workflow/image control UI components and utilities (+ bump version)

feat: reorder changes

feat: optimize worker pipeline and drag reorder

feat: add extensions on save and harden workflow/worker behaviour

feat: tighten hook cleanup, prevent tooltip/notification leaks, and remove unused utility

chore: update readme

fix: make uid() more filename friendly

chore: update workflow name

refactor: improve uid function

refactor: minor convenience changes