Initial commit: Meeting Room v0.1.0

Multi-agent discussion framework:
- Custom/AutoGen/CrewAI backends
- Multi-provider API (role→model binding)
- Tools system (files, web, commands)
- Markdown scenarios with YAML frontmatter
- Workspace init (meeting-room init)
- Session save (--save)

requirements.txt

@@ -0,0 +1,2 @@
+httpx>=0.27
+pyyaml>=6.0