Slide Deck Generator

Transform content into professional slide deck images. The deck is designed for reading and sharing (self-explanatory slides, logical scroll flow, social-media-friendly) rather than live presentation — that assumption drives every layout and density decision below.

User Input Tools

When this skill prompts the user, follow this tool-selection rule (priority order):

1. Prefer built-in user-input tools exposed by the current agent runtime — e.g., AskUserQuestion, request_user_input, clarify, ask_user, or any equivalent.
2. Fallback: if no such tool exists, emit a numbered plain-text message and ask the user to reply with the chosen number/answer for each question.
3. Batching: if the tool supports multiple questions per call, combine all applicable questions into a single call; if only single-question, ask them one at a time in priority order.

Concrete AskUserQuestion references below are examples — substitute the local equivalent in other runtimes.

Image Generation Tools

When this skill needs to render an image, resolve the backend in this order:

1. Current-request override — if the user names a specific backend in the current message, use it.
2. Saved preference — if EXTEND.md sets preferred_image_backend to a backend available right now, use it.
3. Auto-select (when the preference is auto, unset, or the pinned backend isn't available):
   • If the current runtime exposes a native image tool (e.g., Codex imagegen, Hermes image_generate), use it. Runtime-native tools are preferred by default — agents that know their own tool inventory should surface the native one here.
   • Otherwise, if exactly one non-native backend is installed (e.g., baoyu-imagine), use it.
   • Otherwise (multiple non-native backends with no runtime-native tool), ask the user once — batch with any other initial questions.
4. If none are available, tell the user and ask how to proceed.

Setting preferred_image_backend: ask forces the step-3 prompt every run regardless of available backends. Users change the pinned backend via the ## Changing Preferences section below.

Prompt file requirement (hard): write each image's full, final prompt to a standalone file under prompts/ (naming: NN-slide-[slug].md) BEFORE invoking any backend. The file is the reproducibility record and lets you switch backends without regenerating prompts.

Concrete tool names (imagegen, image_generate, baoyu-imagine) above are examples — substitute the local equivalents under the same rule.

Confirmation Policy

Default behavior: confirm before generation.

• Treat explicit skill invocation, a file path, matched signals/presets, and EXTEND.md defaults as recommendation inputs only. None of them authorizes skipping confirmation.
• Do not start Step 3 or later until the user completes Step 2.
• Skip confirmation only when the current request explicitly says to do so, for example: "直接生成", "不用确认", "跳过确认", "按默认出幻灯片", or equivalent wording.
• If confirmation is skipped explicitly, state the assumed style / audience / slide-count / language / backend in the next user-facing update before generating.

Language

Respond in the user's language across questions, progress reports, error messages, and the completion summary. Keep technical tokens (style names, file paths, code) in English.

Script Directory

{baseDir} = this SKILL.md's directory. Resolve ${BUN_X}: prefer bun; else npx -y bun; else suggest brew install oven-sh/bun/bun.

Script	Purpose
scripts/merge-to-pptx.ts	Merge slides into PowerPoint
scripts/merge-to-pdf.ts	Merge slides into PDF

Options

Option	Description
--style <name>	Preset (see Presets below), custom, or custom style name
--audience <type>	beginners / intermediate / experts / executives / general
--lang <code>	Output language (en, zh, ja, ...)
--slides <N>	Target slide count (8-25 recommended, max 30)
--ref <files...>	Reference images applied per slide (style / palette / composition / subject)
--outline-only	Stop after outline
--prompts-only	Stop after prompts (skip image generation)
--images-only	Skip to Step 7; requires existing prompts/
--regenerate <N>	Regenerate specific slide(s): 3 or 2,5,8

Style System

17 presets covering technical / educational / lifestyle / editorial use cases. Every preset is a combination of four dimensions (texture / mood / typography / density). If the user picks "Custom dimensions" in Round 1, Round 2 of the confirmation asks one question per dimension — options and verbatim copy live in references/confirmation.md.

Presets (17)

Preset	Dimensions	Best For
blueprint (Default)	grid + cool + technical + balanced	Architecture, system design
chalkboard	organic + warm + handwritten + balanced	Education, tutorials
corporate	clean + professional + geometric + balanced	Investor decks, proposals
minimal	clean + neutral + geometric + minimal	Executive briefings
sketch-notes	organic + warm + handwritten + balanced	Educational, tutorials
hand-drawn-edu	organic + macaron + handwritten + balanced	Educational diagrams, process explainers
watercolor	organic + warm + humanist + minimal	Lifestyle, wellness
dark-atmospheric	clean + dark + editorial + balanced	Entertainment, gaming
notion	clean + neutral + geometric + dense	Product demos, SaaS
bold-editorial	clean + vibrant + editorial + balanced	Product launches, keynotes
editorial-infographic	clean + cool + editorial + dense	Tech explainers, research
fantasy-animation	organic + vibrant + handwritten + minimal	Educational storytelling
intuition-machine	clean + cool + technical + dense	Technical docs, academic
pixel-art	pixel + vibrant + technical + balanced	Gaming, developer talks
scientific	clean + cool + technical + dense	Biology, chemistry, medical
vector-illustration	clean + vibrant + humanist + balanced	Creative, children's content
vintage	paper + warm + editorial + balanced	Historical, heritage

Per-preset specs: references/styles/<preset>.md. Preset → dimension mapping: references/dimensions/presets.md.

Dimensions (when "Custom dimensions" picked)

Dimension	Options	Purpose
Texture	clean, grid, organic, pixel, paper	Background treatment
Mood	professional, warm, cool, vibrant, dark, neutral, macaron	Color temperature
Typography	geometric, humanist, handwritten, editorial, technical	Headline/body styling
Density	minimal, balanced, dense	Information per slide

Full per-dimension specs: references/dimensions/*.md.

Auto-Selection

Match content signals to a preset. Pick the first row whose signal keywords appear in the source; fall back to blueprint if nothing matches.

Signals in source	Preset
tutorial, learn, education, guide, beginner	sketch-notes
hand-drawn, infographic, diagram, process, onboarding	hand-drawn-edu
classroom, teaching, school, chalkboard	chalkboard
architecture, system, data, analysis, technical	blueprint
creative, children, kids, cute	vector-illustration
briefing, academic, research, bilingual	intuition-machine
executive, minimal, clean, simple	minimal
saas, product, dashboard, metrics	notion
investor, quarterly, business, corporate	corporate
launch, marketing, keynote, magazine	bold-editorial
entertainment, music, gaming, atmospheric	dark-atmospheric
explainer, journalism, science communication	editorial-infographic
story, fantasy, animation, magical	fantasy-animation
gaming, retro, pixel, developer	pixel-art
biology, chemistry, medical, scientific	scientific
history, heritage, vintage, expedition	vintage
lifestyle, wellness, travel, artistic	watercolor

Slide Count Heuristic

Source length	Recommended slides
< 1000 words	5-10
1000-3000 words	10-18
3000-5000 words	15-25
> 5000 words	20-30 (consider splitting)

Reference Images

Users may supply reference images to guide style, palette, layout, or subject.

Intake: Accept via --ref <files...> or when the user provides file paths / pastes images in conversation.

• File path → copy to {slide-deck-dir}/refs/NN-ref-{slug}.{ext}
• Pasted image with no path → ask for the path, or extract style traits verbally as a text fallback

Usage modes (per reference):

Usage	Effect
direct	Pass the file to the backend as a reference image for each slide
style	Extract style traits (line treatment, texture, mood) and append to every slide's prompt body
palette	Extract hex colors and append to every slide's prompt body

Record refs in each slide's prompt frontmatter:

references:
  - ref_id: 01
    filename: 01-ref-brand.png
    usage: direct

At generation time, verify files exist. If usage: direct and the backend accepts refs (e.g., baoyu-imagine --ref), pass the file on every slide. Otherwise embed extracted style/palette traits in the prompt text.

File Layout

slide-deck/{topic-slug}/
├── source-{slug}.{ext}
├── outline.md
├── prompts/NN-slide-{slug}.md
├── NN-slide-{slug}.png
├── {topic-slug}.pptx
└── {topic-slug}.pdf

Slug: 2-4 words, kebab-case, extracted from topic. "Introduction to Machine Learning" → intro-machine-learning.

Backup rule (applies across steps): if a file about to be written already exists, rename it to <name>-backup-YYYYMMDD-HHMMSS.<ext> before writing the new one. This protects user edits and enables rollback.

Workflow

Copy this checklist and check off items as you complete them:

- [ ] Step 1: Setup & analyze
- [ ] Step 2: Confirmation ⚠️ REQUIRED (Round 1; Round 2 only if "Custom dimensions")
- [ ] Step 3: Generate outline
- [ ] Step 4: Review outline (conditional)
- [ ] Step 5: Generate prompts
- [ ] Step 6: Review prompts (conditional)
- [ ] Step 7: Generate images
- [ ] Step 8: Merge to PPTX/PDF
- [ ] Step 9: Output summary

Step 1: Setup & Analyze

1.1 Load EXTEND.md — check these paths in order; first hit wins:

Path	Scope
.baoyu-skills/baoyu-slide-deck/EXTEND.md	Project
${XDG_CONFIG_HOME:-$HOME/.config}/baoyu-skills/baoyu-slide-deck/EXTEND.md	XDG
$HOME/.baoyu-skills/baoyu-slide-deck/EXTEND.md	User home

If found, read, parse, and print a summary (style / audience / language / review). If not, proceed with defaults — first-time setup is not blocking for this skill. Schema: references/config/preferences-schema.md.

1.2 Analyze content — follow references/analysis-framework.md: classify content, detect language, note signals for style selection, estimate slide count from length (see the Slide Count Heuristic in Style System above), generate topic slug. Save source as source.md (honor backup rule if one exists).

1.3 Check existing output ⚠️ REQUIRED before Step 2. If slide-deck/{topic-slug}/ exists, ask how to proceed — four options (regenerate outline / regenerate images / backup and regenerate / exit), verbatim copy in references/confirmation.md.

Save findings to analysis.md: topic, audience, signals, recommended style and slide count, language detection.

Step 2: Confirmation ⚠️ REQUIRED

Hard gate: this step is mandatory per the Confirmation Policy — Steps 3+ cannot start until the user confirms here (or explicitly opts out with "直接生成" / equivalent wording in the current request).

Round 1 (always) — batch five questions in one AskUserQuestion call: style, audience, slide count, review-outline?, review-prompts?. Verbatim options in references/confirmation.md.

Summary displayed before the questions:

• Content type + topic
• Detected language
• Recommended style (based on signals)
• Recommended slide count (based on length)

Round 2 (only if "Custom dimensions" in Round 1) — batch four questions: texture, mood, typography, density. Verbatim options in references/confirmation.md. The four answers replace the preset.

After confirmation: update analysis.md with final choices and store skip_outline_review / skip_prompt_review flags from Q4/Q5.

Step 3: Generate Outline

Resolve style: preset → references/styles/{preset}.md; custom dimensions → combine files in references/dimensions/. Build STYLE_INSTRUCTIONS from the resolved style, apply confirmed audience + language + slide count, follow references/outline-template.md, and save as outline.md.

Stop here if --outline-only. Skip Step 4 if skip_outline_review.

Step 4: Review Outline (Conditional)

Display a slide-by-slide table (# | Title | Type | Layout) along with total count and resolved style. Ask: proceed / edit outline first / regenerate — verbatim in references/confirmation.md.

On "Edit outline first", tell the user to edit outline.md and ask again when ready. On "Regenerate outline", return to Step 3.

Step 5: Generate Prompts

For each slide in outline:

1. Read references/base-prompt.md
2. Extract STYLE_INSTRUCTIONS from the outline (don't re-read the style file)
3. Add the slide's content
4. If a Layout: is specified, include guidance from references/layouts.md
5. Save to prompts/NN-slide-{slug}.md (backup rule applies)

Stop here if --prompts-only. Skip Step 6 if skip_prompt_review.

Step 6: Review Prompts (Conditional)

Display the prompts index (# | Filename | Slide Title) and ask: proceed / edit prompts first / regenerate — verbatim in references/confirmation.md. Branches mirror Step 4.

Step 7: Generate Images

1. Resolve the image backend via the Image Generation Tools rule at the top — ask once if multiple are installed.
2. Confirm every prompts/NN-slide-{slug}.md exists (hard requirement; prompt files are the reproducibility record regardless of backend).
3. Session ID: slides-{topic-slug}-{timestamp} — pass to the backend only if it supports sessions.
4. For each slide: generate sequentially, reusing the session ID. Backup rule applies to PNG files. Report progress as Generated X/N. Auto-retry once on failure before reporting an error.

--regenerate N jumps to this step for the named slides only. --images-only starts here with existing prompts.

Step 8: Merge

${BUN_X} {baseDir}/scripts/merge-to-pptx.ts <slide-deck-dir>
${BUN_X} {baseDir}/scripts/merge-to-pdf.ts <slide-deck-dir>

Step 9: Summary

Slide Deck Complete!
Topic: [topic]
Style: [preset or "custom: texture+mood+typography+density"]
Location: [directory]
Slides: N

- 01-slide-cover.png
- ...
- NN-slide-back-cover.png

Outline: outline.md
PPTX: {topic-slug}.pptx
PDF: {topic-slug}.pdf

Slide Modification

Action	How
Edit	Update prompts/NN-slide-{slug}.md first, then --regenerate N
Add	Create new prompt at position, generate image, renumber subsequent NN (slugs unchanged), update outline.md, re-merge
Delete	Remove PNG + prompt, renumber subsequent, update outline.md, re-merge

Always update the prompt file before regenerating the image — this keeps the prompts directory as the source of truth and makes changes reproducible. Only NN changes on renumber; slugs stay stable so references remain valid.

See references/modification-guide.md for full details.

References

File	Content
references/confirmation.md	Verbatim AskUserQuestion option copy for every confirmation
references/analysis-framework.md	Content analysis framework
references/outline-template.md	Outline structure
references/base-prompt.md	Base prompt body for image generation
references/layouts.md	Layout options
references/design-guidelines.md	Audience, typography, color selection
references/content-rules.md	Content guidelines
references/modification-guide.md	Edit/add/delete workflows
references/styles/<preset>.md	Per-preset specifications
references/dimensions/*.md	Per-dimension specifications
references/config/preferences-schema.md	EXTEND.md schema

Notes

• Image generation takes ~10-30s per slide; report progress between them.
• For sensitive public figures, prefer stylized alternatives to avoid likeness issues.
• Maintain visual consistency via the session ID when the backend supports it.

Changing Preferences

EXTEND.md lives at the first matching path listed in Step 1.1. Two ways to change it:

• Edit directly — open EXTEND.md and change fields. Full schema: references/config/preferences-schema.md.
• Common one-line edits:
  • preferred_image_backend: auto — default; runtime-native tool wins, falls back to the only installed backend, asks only if multiple non-native are present.
  • preferred_image_backend: codex-imagegen — pin to Codex's built-in.
  • preferred_image_backend: baoyu-imagine — pin to the baoyu-imagine skill.
  • preferred_image_backend: ask — confirm backend every run.
  • preferred_style: blueprint, preferred_audience: experts, language: zh.