Add CLAUDE.md

Author: SysAdminDoc

CLAUDE.md

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+# Multistreamer v0.1.0
+
+## Overview
+A self-hosted, real-time multi-video streaming viewer with chat, perfect for watch parties, storm tracking, event monitoring, and more.
+
+## Tech Stack
+HTML/CSS/JS
+
+## Build / Run
+```bash
+Open index.html in browser
+```
+
+## Key Files
+
+
+## Status
+- Version: v0.1.0
+- Files: ~4