build_catalog_from_server_info

Assemble a ToolCatalog from pre-collected built-in tools and live MCP info.

The interactive /tools command entry point: it avoids the asyncio.run MCP discovery reached via collect_catalog (the asyncio.run call itself lives in collect_mcp_catalog), which cannot run inside Textual's running event loop, by reusing the MCP metadata the app already loaded. mcp_error is always None here because discovery is not attempted — any load failures are already reflected per-server in server_info as non-ok MCPServerInfo entries, which split_mcp_server_info surfaces as UnavailableServers.