Summary

• Sync the non-TUI packages/opencode/src/cli/** core slice to upstream v1.4.11
• Keep the PR 6 boundary tight by excluding packages/opencode/src/cli/cmd/tui/**
• Add or update CLI regressions for error formatting and sanitized export
• Remove the obsolete packages/opencode/test/cli/run.test.ts helper test as part of the upstream sync

Why

PawWork still relies on vendored packages/opencode as foundation infrastructure. This PR keeps the CLI core slice aligned with upstream semantics in the PR 6 lane, reduces architectural drift, and preserves PawWork-specific fit where upstream behavior would mislead users or leak sensitive export data.

Related Issue

Part of #27

How To Verify

cd packages/opencode && bun run typecheck
cd packages/opencode && bun test --timeout 30000 test/cli/error.test.ts test/cli/export.test.ts test/cli/github-action.test.ts test/cli/github-remote.test.ts test/cli/import.test.ts test/cli/plugin-auth-picker.test.ts

Manual checks: none, no visible UI changes in this slice.

Screenshots or Recordings

N/A

Checklist

• I ran the relevant verification steps
• I tested visible changes manually when needed
• I am targeting the dev branch