refactor(skills): adapt baoyu-comic for Hermes

Port the upstream baoyu-comic skill to Hermes' tool ecosystem, matching
the earlier baoyu-infographic adaptation:

- metadata namespace openclaw -> hermes (+ tags, homepage)
- drop EXTEND.md preferences system (references/config/ removed,
  workflow Step 1.1 removed)
- user prompts via clarify (one question at a time) instead of
  AskUserQuestion batches
- image generation via image_generate instead of baoyu-imagine, with
  aspect-ratio mapping to landscape/portrait/square
- Windows/PowerShell/WSL shell snippets dropped
- file I/O referenced via Hermes write_file/read_file tools
- CLI-style --flags converted to natural-language options and
  user-intent cues (skill matching has no slash command trigger)

Add PORT_NOTES.md documenting the adaptations and a sync procedure.
Art-style/tone/layout reference files are preserved verbatim from
upstream v1.56.1.

skills/creative/baoyu-comic/references/presets/concept-story.md

@@ -10,11 +10,11 @@
 | Tone | warm |
 | Layout | standard (default) |
 
-Equivalent to: `--art manga --tone warm`
+Equivalent to: art=manga, tone=warm
 
 ## Unique Rules
 
-This preset includes special rules beyond the art+tone combination. When `--style concept-story` is used, ALL rules below must be applied.
+This preset includes special rules beyond the art+tone combination. When the `concept-story` preset is selected, ALL rules below must be applied.
 
 ### Concept Visualization System (CRITICAL)