docs(agents): add CLAUDE.md that imports AGENTS.md for Claude Code compatibility

Per Anthropic docs (https://code.claude.com/docs/en/memory#agents-md),
Claude Code reads CLAUDE.md not AGENTS.md. This file imports AGENTS.md
so both Claude Code and other agents read the same instructions without
duplication.

Signed-off-by: StreamKit Devin <devin@streamkit.dev>
Co-Authored-By: Claudio Costa <cstcld91@gmail.com>

Author: streamkit-devin

CLAUDE.md

@@ -0,0 +1,7 @@
+<!--
+SPDX-FileCopyrightText: © 2025 StreamKit Contributors
+
+SPDX-License-Identifier: MPL-2.0
+-->
+
+@AGENTS.md