VS Code extension fails to start with --port parameter - outputs {} #18714

Description

When opening the OpenCode VS Code extension, it runs:

opencode --port 29138

This outputs only {} and the server doesn't start properly.

Steps to Reproduce

1. Run opencode --port 29138
2. Observe output: {}

Expected Behavior

The server should start in server mode and listen on the specified port.

Actual Behavior

The TUI tries to start alongside the server, causing a conflict. From the debug logs:

ERROR service=default error=[object Object] tui bootstrap failed
{}

Workaround

Using opencode serve --port 29138 works correctly:

opencode server listening on http://127.0.0.1:29138

Environment

• OpenCode version: 1.3.0
• Platform: macOS (darwin)
• Installed via: npm

Suggestion

When --port is specified, OpenCode should automatically run in server mode (like opencode serve) rather than trying to start the TUI. Alternatively, the VS Code extension should use opencode serve --port {port} instead.