fix(skills): address baoyu-comic PR review

- Remove PDF merge feature and scripts/ directory (no pdf-lib dep)
- Correct image_generate docs: prompt-only, returns URL; add
  curl download step after every call
- Downgrade reference images to text-based trait extraction
  (style/palette/scene); character sheet is agent-facing reference
- Unify source file naming on source-{slug}.md across SKILL.md
  and workflow.md

skills/creative/baoyu-comic/PORT_NOTES.md

@@ -12,10 +12,10 @@ Ported from [JimLiu/baoyu-skills](https://github.com/JimLiu/baoyu-skills) v1.56.
 | Trigger | Slash commands / CLI flags | Natural language skill matching |
 | User config | EXTEND.md file (project/user/XDG paths) | Removed — not part of Hermes infra |
 | User prompts | `AskUserQuestion` (batched) | `clarify` tool (one question at a time) |
-| Image generation | baoyu-imagine (Bun/TypeScript) | `image_generate` tool |
+| Image generation | baoyu-imagine (Bun/TypeScript, supports `--ref`) | `image_generate` — **prompt-only**, returns a URL; no reference image input; agent must download the URL to the output directory |
+| PDF assembly | `scripts/merge-to-pdf.ts` (Bun + `pdf-lib`) | Removed — the PDF merge step is out of scope for this port; pages are delivered as PNGs only |
 | Platform support | Linux/macOS/Windows/WSL/PowerShell | Linux/macOS only |
 | File operations | Generic instructions | Hermes file tools (`write_file`, `read_file`) |
-| Runtime abstraction | `${BUN_X}` resolution | Direct `bun` invocation for `scripts/merge-to-pdf.ts` |
 
 ### Structural removals
 
@@ -23,17 +23,32 @@ Ported from [JimLiu/baoyu-skills](https://github.com/JimLiu/baoyu-skills) v1.56.
   - `first-time-setup.md` — blocking first-time setup flow for EXTEND.md
   - `preferences-schema.md` — EXTEND.md YAML schema
   - `watermark-guide.md` — watermark config (tied to EXTEND.md)
+- **`scripts/` directory** (removed entirely): upstream's `merge-to-pdf.ts` depended on `pdf-lib`, which is not declared anywhere in the Hermes repo. Rather than add a new dependency, the port drops PDF assembly and delivers per-page PNGs.
+- **Workflow Step 8 (Merge to PDF)** removed from `workflow.md`; Step 9 (Completion report) renumbered to Step 8.
 - **Workflow Step 1.1** — "Load Preferences (EXTEND.md)" section removed from `workflow.md`; steps 1.2/1.3 renumbered to 1.1/1.2.
 - **Generic "User Input Tools" and "Image Generation Tools" preambles** — SKILL.md no longer lists fallback rules for multiple possible tools; it references `clarify` and `image_generate` directly.
 
+### Image generation strategy changes
+
+`image_generate`'s schema accepts only `prompt` and `aspect_ratio` (`landscape` | `portrait` | `square`). Upstream's reference-image flow (`--ref characters.png` for character consistency, plus user-supplied refs for style/palette/scene) does not map to this tool, so the workflow was restructured:
+
+- **Character sheet** is still generated, but it is an **agent-facing** reference used when writing each page's prompt text. `image_generate` never sees it as a visual input.
+- **User-supplied reference images** are reduced to `style` / `palette` / `scene` trait extraction — traits are embedded in the prompt body; the image files themselves are kept only for provenance under `refs/`.
+- **Page prompts** now mandate that character descriptions are embedded inline (copied from `characters/characters.md`) — this is the only mechanism left to enforce cross-page character consistency.
+- **Download step** — after every `image_generate` call, the returned URL is fetched to disk (e.g., `curl -fsSL "<url>" -o <target>.png`) and verified before the workflow advances.
+
 ### SKILL.md reductions
 
 - CLI option columns (`--art`, `--tone`, `--layout`, `--aspect`, `--lang`, `--ref`, `--storyboard-only`, `--prompts-only`, `--images-only`, `--regenerate`) converted to plain-English option descriptions.
 - Preset files (`presets/*.md`) and `ohmsha-guide.md`: `` `--style X` `` / `` `--art X --tone Y` `` shorthand rewritten to `art=X, tone=Y` + natural-language references.
-- `partial-workflows.md`: per-skill slash command invocations rewritten as user-intent cues.
+- `partial-workflows.md`: per-skill slash command invocations rewritten as user-intent cues; PDF-related outputs removed.
 - `auto-selection.md`: priority order dropped the EXTEND.md tier.
 - `analysis-framework.md`: language-priority comment updated (user option → conversation → source).
 
+### File naming convention
+
+Source content pasted by the user is saved as `source-{slug}.md`, where `{slug}` is the kebab-case topic slug used for the output directory. Backups follow the same pattern with a `-backup-YYYYMMDD-HHMMSS` suffix. SKILL.md and `workflow.md` now agree on this single convention.
+
 ### What was preserved verbatim
 
 - All 6 art-style definitions (`references/art-styles/`)
@@ -41,7 +56,6 @@ Ported from [JimLiu/baoyu-skills](https://github.com/JimLiu/baoyu-skills) v1.56.
 - All 7 layout definitions (`references/layouts/`)
 - Core templates: `character-template.md`, `storyboard-template.md`, `base-prompt.md`
 - Preset bodies (only the first few intro lines adapted; special rules unchanged)
-- `scripts/merge-to-pdf.ts` (Bun-compatible on Linux/macOS)
 - Author, version, homepage attribution
 
 ## Syncing with upstream
@@ -59,3 +73,5 @@ diff <(curl -sL https://raw.githubusercontent.com/JimLiu/baoyu-skills/main/skill
 ```
 
 Art-style, tone, and layout reference files can usually be overwritten directly (they're upstream-verbatim). `SKILL.md`, `references/workflow.md`, `references/partial-workflows.md`, `references/auto-selection.md`, `references/analysis-framework.md`, `references/ohmsha-guide.md`, and `references/presets/*.md` must be manually merged since they contain Hermes-specific adaptations.
+
+If upstream adds a Hermes-compatible PDF merge step (no extra npm deps), restore `scripts/` and reintroduce Step 8 in `workflow.md`.