Sinfonie 0.1.0

First public build. Multi-repo workspaces, spaces, crew of models, review cockpit, Jira/GitHub/MCP integration.

First launch on macOS (unsigned beta): macOS will say it could not verify Sinfonie is free of malware. Click Done (not Move to Trash), then System Settings → Privacy & Security → scroll to Security → Open Anyway next to Sinfonie, confirm with your password. Or in Terminal: xattr -dr com.apple.quarantine /Applications/Sinfonie.app.