feat(fastify): add new-device session alerts and session list

.agents/skills/react-email/README.md

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+# React Email Agent Skill
+
+This directory contains an Agent Skill for building HTML emails with React Email components.
+
+## Structure
+
+```
+skills/
+└── react-email/
+    ├── SKILL.md              # Main skill instructions
+    └── references/
+        ├── COMPONENTS.md     # Complete component reference
+        ├── EDITOR.md         # Visual email editor reference
+        ├── I18N.md           # Internationalization guide
+        ├── PATTERNS.md       # Common email patterns and examples
+        ├── SENDING.md        # Email sending guide
+        └── STYLING.md        # Styling and CSS reference
+```
+
+## What is an Agent Skill?
+
+Agent Skills are a standardized format for giving AI agents specialized knowledge and workflows. This skill teaches agents how to:
+
+- Build HTML email templates using React Email components
+- Add a visual drag-and-drop email editor to a React application (using `@react-email/editor`)
+- Send emails through Resend and other providers
+- Implement internationalization for multi-language support
+- Follow email development best practices
+
+## Using This Skill
+
+AI agents can load this skill to gain expertise in React Email development. The skill follows the [Agent Skills specification](https://agentskills.io) with:
+
+- **SKILL.md**: Core instructions loaded when the skill is activated (< 350 lines)
+- **references/**: Detailed documentation loaded on-demand for specific topics
+
+## Progressive Disclosure
+
+The skill is structured for efficient context usage:
+
+1. **Metadata** (~100 tokens): Name and description in frontmatter
+2. **Core Instructions** (~3K tokens): Main SKILL.md content
+3. **Detailed References** (as needed): Component docs, i18n guides, patterns
+
+Agents load only what they need for each task.
+
+## Learn More
+
+- [React Email Documentation](https://react.email/docs/llms.txt)
+- [Agent Skills Specification](https://agentskills.io/specification.md)
+- [Resend Documentation](https://resend.com/docs/llms.txt)