- Add oauth2_m2m auth type to mcp_loader.py (client_secret in record, not SSM)
- Remove _get_factcloud_token(), FACTCLOUD_* config, factcloud_clients from main.py
- Seed Daniel's factcloud connection into enrolled_services.mcp_connections
- factcloud now loaded dynamically via mcp_loader at session start
- manage_mcp_connection tool: add/remove/enable/disable/list MCP servers
- mcp_loader: dynamic connection with OAuth/bearer/none auth, token caching
- Secrets stored in SSM, never in DynamoDB
- MCP clients loaded per-session and cleaned up in finally block
