Function now_epoch_ms

core/src/mcp/manager.rs:424–429

Wall-clock now() in Unix epoch milliseconds. Used internally by the activity-tracking + idle-disconnect path. Kept as a free function (rather than going through `HostEnv`) because the MCP manager predates host_env wiring and the host's `Clock` impl is not yet threaded into the manager.

()

/// predates host_env wiring and the host's `Clock` impl is not yet
/// threaded into the manager.
fn now_epoch_ms() -> u64 {
    std::time::SystemTime::now()
        .duration_since(std::time::UNIX_EPOCH)
        .map(|d| d.as_millis() as u64)
        .unwrap_or(0)
}

/// Convert MCP tool result to string output
pub fn tool_result_to_string(result: &CallToolResult) -> String {