v0.1.13 - User-friendly three-pass iteration

What's changed

• Added a three-pass iteration workflow to make the skill more user-friendly:
  1. Content-rich first draft: avoid overly simple first versions.
  2. Style-locked revision: prevent style drift after user feedback.
  3. Cleanup QA: remove meaningless X marks, random icons, fake labels, and decorative elements with no report value.
• Added references/iteration-playbook.md with concrete rules, style-lock template, cleanup checklist, and feedback translation examples.
• Updated SKILL.md so Codex must use the three-pass loop for multi-page image2 PPT work.
• Updated workflow, prompt, and QA checklists to enforce style locks and meaningless-element cleanup.
• Updated English and Chinese README docs to explain the three-pass workflow for non-expert users.

Verification

• Checked README local links.
• Ran skill quick validation with PYTHONUTF8=1.
• Ran diff whitespace check.
• Confirmed no stale local redraw script or visual-assets path is referenced.