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Consolidates market and data analysis skills; adds chart viz (#36)
Unifies market analysis, data analysis, and consulting reporting into a comprehensive consulting-analysis skill, enabling a two-phase workflow from analysis framework design to professional report generation. Introduces a DuckDB-based data analysis utility for Excel/CSV files and a chart-visualization skill with a flexible JS interface and extensive chart type documentation. Removes the legacy market analysis skill to streamline report generation and improve extensibility for consulting and data-driven workflows.
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# generate_sankey_chart — 桑基图
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## 功能概述
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展示资源、能量或用户流在不同节点之间的流向与数量,适合预算分配、流量路径、能耗分布等。
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## 输入字段
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### 必填
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- `data`: array<object>,每条记录包含 `source`(string)、`target`(string)与 `value`(number)。
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### 可选
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- `nodeAlign`: string,默认 `center`,可选 `left`/`right`/`justify`/`center`。
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- `style.backgroundColor`: string,设置背景色。
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- `style.palette`: string[],定义节点配色。
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- `style.texture`: string,默认 `default`,可选 `default`/`rough`。
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- `theme`: string,默认 `default`,可选 `default`/`academy`/`dark`。
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- `width`: number,默认 `600`。
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- `height`: number,默认 `400`。
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- `title`: string,默认空字符串。
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## 使用建议
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节点名称保持唯一,避免过多交叉;如存在环路需先打平为阶段流向;可按阈值过滤小流量以聚焦重点。
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## 返回结果
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- 返回桑基图 URL,并在 `_meta.spec` 存放节点与流量定义。
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