Add AGENTS.md for better agent guidance

Co-authored-by: Amp <[email protected]>
Amp-Thread-ID: https://ampcode.com/threads/T-61f82727-01d4-4d68-9680-76d794a3c2ea

Author: jdorfman

AGENT.md

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+AGENTS.md

AGENT.md

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+# Agent Guidelines for awesome-amp-cli Repository
+
+## Build, Lint & Test Commands
+
+- Lint readme: `npx awesome-lint readme.md`
+- Link check: `awesome_bot --allow-redirect --white-list https://github.com/jdorfman/awesome-amp-code,https://example.com readme.md`
+- Node.js version: Use v21.6.0 (as specified in .tool-versions)
+
+## Code Style Guidelines
+
+- **Markdown Format**: Follow standard Markdown formatting for documentation
+- **List Items**: Add items at the bottom of existing lists
+- **Item Format**: `- [item name](https link) - Description beginning with capital, ending in period.`
+- **Commits**: Always create a new branch for proposed changes
+- **PR Process**: Check spelling and grammar before submitting
+- **Code of Conduct**: All contributions must adhere to the Code of Conduct
+
+## Project Structure
+
+- Documentation is the primary focus of this repository
+- Main content is in amp_cli_docs.md and readme.md
+- CI pipeline uses awesome-lint and awesome_bot to validate content
+
+## Add link to Built With section
+
+When `/builtwith` followed by a link is included in a prompt, you will add the link to the Built With section of the README.md file. If there is a numbered list of urls, create subagents to complete the tasks.
+
+## Add link to @docs/amp_faq.md
+
+When `/faq` followed by a link is included in a prompt, you will add the link to the @docs/amp_faq.md file in between `---` and `---` Place it above the last question. The update the Last Modified date