📝 [Modules] Add Sticky Note Module Series

[ahmdkaml]

📝 Overview

Introduce a family of sticky-note modules for visually distinct callouts, notes, and annotations.

Sticky notes should behave as document modules while providing a more expressive visual presentation than ordinary text modules.

Initial Module Types

• Basic Sticky Note
• Warning Note
• Information Note
• Success Note
• Important Note

Goals

• Allow sticky notes to be added to documents.
• Support configurable text/content.
• Support module features where applicable.
• Support different visual variants.
• Render consistently in preview and PDF.
• Allow sticky notes to participate in the normal module hierarchy.

Future Direction

The sticky-note system could eventually support:

• Custom colors
• Icons
• Borders
• Shadows
• Different shapes
• Pin/tape visual effects
• Detached/floating sticky notes
• Nested content