OpenCode resolves a plugin file through either a named factory export or the
module default export. The generated orca-opencode-status.js only carried the
named export, so the default-export loader had nothing to read.
Verified against opencode 1.18.18: a default of { id, setup } is refused with
"must default export an object with server()", while { id, server } loads. Emit
that shape and keep the named export so the factory loader is unaffected.
