v1.115.4

Documentation

• Image generation backend selection: emphasize Codex imagegen as the priority runtime-native tool (invoke via the Skill tool with skill: "imagegen") and forbid SVG/HTML/canvas substitution when no raster backend can be resolved — fall through to asking the user instead of silently emitting code-based art. Updated in docs/image-generation-tools.md and inlined into baoyu-article-illustrator, baoyu-comic, baoyu-cover-image, baoyu-image-cards, baoyu-infographic, baoyu-slide-deck, and baoyu-xhs-images.