[toidicakhia]

Summary

• Fall back to the package version when the build-time version is local or missing, instead of emitting local/unknown.
• Default an unknown channel to latest when formatting the user agent.
• Add coverage for the fallback behavior in App.useragent.

Verification

• bun test test/app.test.ts in packages/core
• bun typecheck in packages/core and packages/cli
• Pre-push bun run check: typecheck passed for all 36 packages

[github-actions]

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[github-actions]

Thanks for your contribution!

This PR doesn't have a linked issue. All PRs must reference an existing issue.

Please:

1. Open an issue describing the bug/feature (if one doesn't exist)
2. Add Fixes #<number> or Closes #<number> to this PR description

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[opencodejr]

Thanks for putting this together, @toidicakhia!

On 2026-10-10 the v2 branch was promoted to dev, and v2 work now happens on dev. This pull request targets v2, which is no longer used, so it's being closed.

Please open a new pull request with dev as the base. You can reuse the same branch.