Add the outline.md + prompts/ → batch.json one-liner to SKILL.md's Usage section so the
build-batch helper is discoverable next to --batchfile, and update build-batch.ts --help
to print the bun / npx-y bun invocations with the {baseDir}/scripts/... layout used by
the rest of the skill.
BREAKING CHANGE: removed `baoyu-imagine` and `baoyu-image-cards`. All
functionality now lives under `baoyu-image-gen` and `baoyu-xhs-images`
respectively. Cross-skill `## Image Generation Tools` examples updated
across baoyu-article-illustrator, baoyu-comic, baoyu-cover-image,
baoyu-infographic, and baoyu-slide-deck.
Migration: existing `~/.baoyu-skills/baoyu-imagine/EXTEND.md` configs are
auto-renamed to `…/baoyu-image-gen/EXTEND.md` on first run via the
legacy-path resolver in `scripts/main.ts`.