mindmap-ppt-builder

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Create or update content for the agegr/mindmap-ppt static presentation project from a prose draft, article, speech, report, or notes. Use when Codex needs to turn a written document into the project's project/source.js Markdown mind-map data, choose which nodes need illustrations, generate or request GPT Image 2 illustrations matching the project's restrained presentation style, place assets under project/, and validate the result with npm run check.

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NPX Install

npx skill4agent add agegr/mindmap-ppt mindmap-ppt-builder

Mindmap PPT Builder

Goal

Turn a user-provided source document into a presentation-ready
project/source.js
for this repo. The source document may be pasted text in the conversation or a local text/Markdown file path supplied by the user. The output is a preorder mind-map: concise two-line nodes, optional node images, and local assets that match the current light PPT style.
Read
references/project-format.md
when you need exact project file conventions or visual constraints.

Workspace Requirement

Use this skill inside the
agegr/mindmap-ppt
repository root.
  • If the current directory already contains
    package.json
    ,
    index.html
    ,
    src/
    , and
    project/
    , treat it as the repo root.
  • If the repo is not present, clone
    https://github.com/agegr/mindmap-ppt
    into the current working directory as a folder named
    mindmap-ppt
    , then enter that folder.
  • If a
    mindmap-ppt
    path already exists but is not this repo, stop and ask the user where to place the clone.
  • Keep the application repository outside the skill folder. Do not copy or clone
    index.html
    ,
    src/
    , or
    project/
    into
    .agents/skills/mindmap-ppt-builder/
    .
  • Normal skill output should modify only
    project/source.js
    and local asset files under
    project/
    .
  • Do not delete existing project assets unless the user explicitly asks for cleanup.
  • Do not edit
    src/
    ,
    index.html
    , or application behavior unless the user explicitly asks for implementation changes.

Workflow

  1. Get the user's source document:
    • Use pasted text from the conversation when provided.
    • If the user gives a local file path, read only that explicitly provided document file and use its contents.
    • If neither pasted text nor a readable local file is available, ask the user for the document before generating
      project/source.js
      .
  2. Read the document and identify the presentation thesis.
    • Follow the source language by default: Chinese input -> Chinese output; English input -> English output.
    • For English output, still use an eyebrow/headline structure for two-line nodes when natural.
    • Do not silently correct facts. If the source has obvious contradictions or questionable claims, preserve the claim carefully or mention the conflict to the user.
    • For very long documents, preserve the original chapter structure first. If the material is too broad to reduce confidently, draft a high-level outline and ask the user to confirm priorities before finalizing.
  3. Build a clear logic tree:
    • root: document/source name or presentation topic
    • major branches: usually 2-4 sections, but follow the source logic when another structure is clearer
    • child nodes: use them for causes, consequences, evidence, examples, process steps, contrasts, or supplements
    • depth: add levels only when nesting makes the author's logic easier to understand
  4. Write each node as one unordered-list item plus an optional continuation line:
md
- 副标题
  主标题
Use the first line as a short category label and the second line as the main message. Keep each line under about 30 Chinese characters or 8 English words. Prefer two-line labels for all visible nodes; use a single-line node only when the label is already extremely short and clear.
  1. Choose image nodes sparingly:
    • Node images are optional.
    • A mind-map necessarily omits a lot of source detail; use images to preserve or explain the omitted detail on high-information nodes.
    • Pick 3-8 high-information nodes for a typical deck; short drafts may use 0-2 images.
    • Prefer nodes that summarize a process, architecture, comparison, timeline, metric, or conceptual model.
  2. Generate illustrations for chosen nodes with GPT Image 2 or the available image generation tool. Save them under
    project/
    or a subfolder of
    project/
    .
    • Prefer PNG for generated raster illustrations, SVG for simple diagram placeholders, and JPG only for photo-like assets.
    • If image generation is unavailable, either omit images or create simple SVG placeholder diagrams under
      project/
      using the same restrained palette. Use 16:10 composition, no text inside images, and descriptive kebab-case filenames such as
      project/demo-flow.svg
      .
  3. Reference images in Markdown metadata lines:
md
  @image process-overview.png
  1. Replace
    project/source.js
    with:
js
export const sourceMarkdown = `
- ...
`;
Escape backticks and
${...}
sequences before writing user-derived text inside the JavaScript template string.
  1. Run
    npm run check
    .
  2. Optional visual validation: run
    npm run dev
    and inspect
    http://127.0.0.1:5173/
    when browser inspection is available.

Mindmap Authoring Rules

  • Do not force every deck into a strict
    root -> level 1 -> level 2 -> level 3
    taxonomy. That shape is only a useful default, not a rule.
  • Let the hierarchy express the author's logic structure. If cause A leads to result B, B can be a child node of A; if B further leads to result C, form an
    A -> B -> C
    subtree.
  • The only hard principle is clarity: a reader should understand why each child node belongs under its parent and what relationship is being expressed.
  • Follow the source order. This app reveals nodes in preorder: parent first, then all children. Do not move conclusions from later text into earlier parent labels.
  • Do not repeat the root topic in child nodes. If the root already states the problem or theme, children should advance the story.
  • Group nearby meanings under one parent. Keep backgrounds, criteria, risks, product/tool inventories, recommendations, and conclusions in their own coherent branches.
  • Main nodes carry judgments; child nodes carry evidence, reasons, examples, or supplements. If a node explains another node, make it a child, not a sibling.
  • Keep each parent to at most 5 children. If there are more, add grouping nodes.
  • Split tools/products only when the source analyzes them one by one. Merge them when the source merely lists options in passing.
  • Do not split sentence by sentence. One node should carry one complete small point.
  • Each node should correspond to about 10-80 Chinese characters of source material. Less than 10 is usually too fragmented; more than 80 usually needs splitting.
  • Node text may be slightly longer than a normal title, but one node should not contain multiple independent ideas.
  • Parent labels should summarize and navigate; child labels should reveal specifics. Avoid parent labels that spoil later details.
  • Put images on high-information nodes, such as framework, comparison, inventory, recommendation, or risk-model nodes. Avoid images on very small detail nodes.

Markdown And Image Example

Use
@image
as a metadata continuation line after the node's visible two-line label. The
@image
line is not displayed as node text.
js
export const sourceMarkdown = `
- 产品发布
  三分钟讲清楚新功能
  @image overview.png
    - 用户痛点
      当前流程成本很高
      @image image-asset-1/pain-points.jpg
    - 解决方案
      自动整理文稿和插图
    - 演示效果
      像 PPT 一样逐步展开
      @image diagrams/demo-flow.svg
`;
Image paths are relative to
project/
by default:
  • @image overview.png
    ->
    ./project/overview.png
  • @image image-asset-1/pain-points.jpg
    ->
    ./project/image-asset-1/pain-points.jpg
  • @image diagrams/demo-flow.svg
    ->
    ./project/diagrams/demo-flow.svg

Image Prompt Pattern

Use this style prompt for GPT Image 2:
text
Create a clean presentation illustration for a light PPT mind-map node.
Subject: <node main idea>.
Include: <2-4 concrete visual elements from the source text>.
Style: restrained vector-like editorial illustration, warm off-white background, dark teal #183a4a, muted green #eef7f3, orange accent #d8894f, simple geometric shapes, thin shadows, small 8px-radius card-like forms, no photorealism, no text, no logos, no busy decorations.
Composition: centered, generous whitespace, readable at thumbnail size, aspect ratio 16:10.
If the source needs a real chart, diagram, or screenshot, create a simple diagrammatic illustration instead of inventing precise numbers. Do not put text in images; labels belong in nodes.

SVG Placeholder Pattern

When no image-generation tool is available but an illustration is still useful, a simple SVG placeholder is acceptable:
  • Size:
    1280x800
    .
  • Style: warm off-white background, dark teal
    #183a4a
    , muted green
    #eef7f3
    , orange accent
    #d8894f
    .
  • Content: abstract process blocks, arrows, cards, or timeline shapes based on the node idea.
  • No readable text, logos, dense decoration, or photorealism.

Authoring Rules

  • Preserve the user's argument. Do not flatten important causal relationships into generic slogans.
  • Keep the preorder reveal useful: each next node should add a clear idea.
  • Use
    @image
    only after the node's title line, before its children.
  • Use PNG, JPG/JPEG, or SVG assets.
  • Save image files under
    project/
    or a subfolder of
    project/
    .
  • Prefer short
    @image
    values relative to
    project/
    , e.g.
    @image user-journey.png
    ,
    @image diagrams/user-journey.png
    , or
    @image image-asset-1/a.jpg
    .

Validation Checklist

  • project/source.js
    exports
    sourceMarkdown
    .
  • Asset files exist for every
    @image
    .
  • npm run check
    passes.