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platform-widget-generate

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Use this skill to author a complete HXL WidgetBundle (UEM body + schema.json + -meta.xml). TRIGGER when: user asks for a widget, mosaic, fragment, card, or rich UI surface for any subject, domain, feature, or entity noun; the prompt names only an entity or data shape without invoking Lightning Types, CLTs, or Apex-backed types. DO NOT TRIGGER when: the prompt explicitly says 'Lightning Type', 'CLT', 'Custom Lightning Type', 'Apex-backed type', or references '@apexClassType/...' (use platform-lightning-type-widget-coordinate); authoring a custom-LWC renderer for a Custom Lightning Type (use platform-custom-lightning-type-generate); or editing only an LWC component.

plugins/builder/platform-lightning-widgets/skills/platform-widget-generate/SKILL.md

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# Generating a Widget Bundle

Author a complete WidgetBundle: a UEM tree (`tile/widget`), a JSON Schema describing the widget's input contract, and the `.uiwidget-meta.xml` that registers the bundle.

## When to Use This Skill

Use when the user asks for a widget, mosaic, fragment, or card-style rich UI surface. Do not use this skill for custom-LWC renderers or for `renderer.json` files inside a Custom Lightning Type bundle — those belong to `platform-custom-lightning-type-generate`.

## Inputs

- **`widgetName`** (required) — `camelCase` identifier; becomes the directory name under `uiWidgets/`.
- A **shape** — what data the widget renders. The widget cannot be generated without it. The shape arrives one of two ways, in priority order:
  1. **`lightningTypeSchema`** — `{ path, apexClassFqn }` for an existing Apex-backed Lightning Type. The FQN takes one of two forms: outer-class (`<namespace>__<ClassName>`) where the outer class is the payload, or inner-class (`<namespace>__<ClassName>$<InnerClass>`) where the named inner class is the payload. Passed in by the `platform-lightning-type-widget-coordinate` orchestrator. When present, derive per `references/schema-from-lightning-type.md`.
  2. **Extracted from the user's prompt** — when no `lightningTypeSchema` is passed, infer the shape directly from what the user wrote: a pasted JSON payload, an enumerated field list ("id as string, total as number"), or descriptive prose. The output is the same ordered list of `{ name, type, required }` either way.