fix: move ai_assistant_guide.md into package resources to fix #39

This change relocates the AI assistant guide from the static directory
into the package resources directory, ensuring it gets properly included
in the distribution package and is accessible when installed via pip/uv.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: phernandez

src/basic_memory/mcp/prompts/ai_assistant_guide.py

@@ -19,9 +19,7 @@ def ai_assistant_guide() -> str:
         A focused guide on Basic Memory usage.
     """
     logger.info("Loading AI assistant guide resource")
-    guide_doc = (
-        Path(__file__).parent.parent.parent.parent.parent / "static" / "ai_assistant_guide.md"
-    )
+    guide_doc = Path(__file__).parent.parent / "resources" / "ai_assistant_guide.md"
     content = guide_doc.read_text(encoding="utf-8")
     logger.info(f"Loaded AI assistant guide ({len(content)} chars)")
     return content