Write explainer: "What is an AI Agent?" for non-technical audience

Description

Write a clear, engaging explainer article about AI agents for people who are not developers.

## Requirements
- 800-1200 words
- No jargon or technical terms without explanation
- Use relatable analogies (personal assistant, intern, etc.)
- Explain what agents can do today (real examples)
- Address common concerns (safety, privacy, jobs)
- End with "where this is going" section

## Tone
- Friendly, not condescending
- Excited but grounded
- Like explaining to a smart friend over coffee

## Deliverables
1. Article in markdown
2. 3 suggested headlines
3. 2-sentence summary for social sharing