feat: allow add myself feature

[dguyen]

Add support for "Add Myself" button in the envelope create and edit flows

Introduces a new optional "user" prop

user?: {
    name?: string;
    email?: string;
  };

[Copilot]

Pull request overview

Adds support for an optional user prefill object (name/email) to the envelope create/edit embedding flows across the playground configurators and all framework wrappers, enabling an “Add Myself” style experience.

Changes:

• Extends create/update embedding prop types to include optional user?: { name?: string; email?: string }.
• Adds user to the encoded embed options payload (URL hash) for create/update across frameworks.
• Updates the playground create/update configurators to collect user.name / user.email and pass them through when set.

Reviewed changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
playground/src/components/embeddings/update-envelope.tsx	Adds user to the form schema/defaults/UI and forwards it to the React embed component.
playground/src/components/embeddings/create-envelope.tsx	Adds user to the form schema/defaults/UI and forwards it to the React embed component.
packages/vue/src/update-envelope.vue	Adds user prop type and includes it in the encoded options.
packages/vue/src/create-envelope.vue	Adds user prop type and includes it in the encoded options.
packages/svelte/src/update-envelope.svelte	Adds user prop/export and includes it in the encoded options.
packages/svelte/src/create-envelope.svelte	Adds user prop/export and includes it in the encoded options.
packages/solid/src/update-envelope.tsx	Adds user prop type and includes it in the encoded options.
packages/solid/src/create-envelope.tsx	Adds user prop type and includes it in the encoded options.
packages/react/src/update-envelope.tsx	Adds user prop type and includes it in the encoded options.
packages/react/src/create-envelope.tsx	Adds user prop type and includes it in the encoded options.
packages/preact/src/update-envelope.tsx	Adds user prop type and includes it in the encoded options.
packages/preact/src/create-envelope.tsx	Adds user prop type and includes it in the encoded options.
packages/mitosis/src/update-envelope.lite.tsx	Adds user prop type and includes it in the encoded options (source for multi-framework generation).
packages/mitosis/src/create-envelope.lite.tsx	Adds user prop type and includes it in the encoded options (source for multi-framework generation).
packages/angular/src/update-envelope.ts	Adds user prop type/@input and includes it in the encoded options.
packages/angular/src/create-envelope.ts	Adds user prop type/@input and includes it in the encoded options.

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