ljg-business-model
Based on the Business Model Canvas from "Business Model Generation", this skill organizes user-provided project introductions, interviews, product materials, or business plans into a 9-block Business Model Canvas card, delivering both a PNG and an editable HTML file. USE WHEN the user invokes ljg-business-model, requests drawing a Business Model Canvas, a 9-block business model, or turning business information into a canvas card. NOT FOR general business analysis, investment valuation, Lean Canvas, or merely explaining business model concepts.
1How It Works & Mechanism
Organize user materials into a 9-block Business Model Canvas, with the primary deliverable being a Chinese landscape PNG, while retaining editable HTML and structured JSON.
把用户的信息变成一张能看清「为谁创造什么价值、如何交付、如何收支」的商业模式画布。主产物为中文横版 PNG；同时保留 HTML 和结构化 JSON，便于修改、追溯与重绘。
Confirm the target and scope before starting; draft an initial version if information is sufficient, mark missing items as 'To be supplemented', and only inquire further if just a company name is provided.
只给公司名且没有任何业务资料时，询问业务描述或经用户授权补充研究；信息够画初稿就直接画，缺项写「待补充」。
Tag each key point as given/inferred/unknown; explicit user plans must still be marked as 'Proposed/Planned' rather than currently occurring.
每个要点标记 `given`（材料提供）、`inferred`（推测）或 `unknown`（待补充）。
Read CanvasGuide.md to calibrate the definitions, relationships, and classic layout of the nine blocks, ensuring Cost Structure and Revenue Streams stay at the bottom.
读取 [CanvasGuide.md](CanvasGuide.md) 校准九模块的定义、关系与经典布局。
Run the built-in renderer from any working directory to generate offline HTML from the input JSON.
bun "$SKILL_DIR/Tools/Render.ts" --input "$WORK_DIR/model.json" --output "$WORK_DIR/model.html"
The renderer enforces strict input validation: all nine keys must be present, ≤5 items per block, and given items must include source_refs.
if (item.status === "given" && (!Array.isArray(item.source_refs) || !item.source_refs.length)) fail(`${path} 材料提供条目须有 source_refs`);
All input text is strictly escaped as plain text, preventing execution of any HTML inside the input.
文本全部按文本处理，自动转义；不执行输入中的 HTML。
Throws an error if the output path already exists to avoid overwriting older versions; writes files using the wx flag.
输出路径已存在会报错，以免覆盖旧版本。
Provides browser-side businessModelAudit() to inspect block counts, missing items, inferences, and geometric overflow.
`window.businessModelAudit()` 提供块数、缺项、推测和几何溢出检查。
Retains Strategyzer and CC BY-SA 3.0 attributions in the footer, stating that this is a Chinese adaptation rather than the official original.
页脚保留 Business Model Canvas、Strategyzer.com 与 CC BY-SA 3.0 归属；此处是中文改编排版，不是官方原版或对原书全文的复述。
2Core Capabilities
3External Dependencies
| Kind | Dependency / Endpoint |
|---|---|
| cli | bun（运行渲染器） |
4Recommended Governance & Evidence
- scripts/: Local script or command execution: bun skills/ljg-business-model/Tools/Render.ts (validates JSON and generates offline HTML)
- 本地工作目录: File I/O and artifact output: {--output}.html (refuses overwrite if file exists, flag wx)
5Second-Pass Verification
- [ok] 外部调用核验：无网络 — 风险扫描『网络请求』无命中；URL 命中全在 CanvasGuide 的来源清单与 HTML 页脚超链接，属标注而非调用，运行期不请求。
- [ok] 脚本行为核验 — Render.ts 仅 import node:fs/promises 与 node:path/node:util；无 fetch/curl、无 child_process、无 env 读取。
- [ok] 写盘核验 — writeFile(output, html, { flag: "wx" }) 只写 --output 指定的 HTML，已存在即报错；未发现写其它路径。
- [ok] 注入面反例检查 — Render.test.ts 断言 '<img src=x onerror="alert(1)">' 被转义为实体且不产生 <img src=x，确认文本转义真实生效。
- [ok] 凭证核验：无 — 风险扫描『凭证/环境变量』命中为命令里的 $SKILL_DIR 路径变量，非凭据；代码无 env/keychain 读取。
- [ok] 功能声明与实现一致 — frontmatter 声明交付 PNG 与可改 HTML，正文给出 JSON→HTML 渲染、浏览器截图与验收函数，未夸大。
- [ok] 校验契约核对 — 九键齐全、每格≤5 条、text≤90、given 需 source_refs、inferred 需 reason、segment 有效均可在 validateModel 中逐条定位。
- [ok] 判级口径复核 — 仅本地脚本与本地读写、无外发或凭据，落 blue；页脚外链不改档位。
6Verdict & Scenarios
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