Add HTML mockup snippet to Notion AI Integrator PRD

[Genovese-Felipe]

Motivation

• Visualize the Notion AI Integrator UI to clarify how intelligent search, automations, and content generation will appear and behave.
• Provide a concrete example that designers and stakeholders can review without needing a running prototype.
• Address inline feedback by adding a ready-to-view HTML mockup under the Excitação fmeda 7m section.

Description

• Updated PRD-notion-ai-integrator.md to include a new Excitação fmeda 7m HTML mockup section.
• Added an HTML snippet with a <section> containing three article blocks for Busca inteligente, Automação recorrente, and Conteúdo personalizado, each with descriptive text and action buttons.
• This is a documentation-only edit and does not change any application runtime code or infrastructure.

Testing

• No automated tests were run because this is a documentation-only change.

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Codex Task