Expose Codex CLI's built-in image_gen tool through baoyu-image-gen's
standard CLI + batch flow as a dedicated provider. The provider spawns
the bundled scripts/codex-imagegen/main.ts (synced from
packages/baoyu-codex-imagegen/src/) so the skill remains self-contained
and inherits retry, cache, file-lock, and JSONL logging. No
OPENAI_API_KEY required — uses the user's Codex subscription.
New env vars: BAOYU_CODEX_IMAGEGEN_{BIN,CACHE_DIR,TIMEOUT_MS,RETRIES,LOG_FILE}.
Hyphenated provider names now resolve under-scored env vars (e.g.,
BAOYU_IMAGE_GEN_CODEX_CLI_CONCURRENCY). codex-cli is never auto-selected
— pin via --provider or default_provider in EXTEND.md.
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`.