chore(harness): update underlying adapter SDKs to their latest versions (#19925)

## Background

The harness adapters pinned SDK and CLI releases were getting old, so
they should be updated.

## Summary

- Update the primary SDK and CLI dependencies used by the harness
adapters and their bridges.
- Align matching dependencies in the harness end-to-end examples.
- Keep exact-version `allowBuilds` entries synchronized for CLIs with
install scripts.
- Strengthen the OpenCode regression coverage and dependency-update
workflow against future version drift.

## End-to-End Verification

Ran comprehensive harness examples for all updated adapters, including
interactively via `examples/harness-e2e-next`.

## Checklist

- [x] All commits are signed (PRs with unsigned commits cannot be
merged)
- [x] Tests have been added / updated (for bug fixes / features)
- [x] Documentation has been added / updated (for bug fixes / features)
- [x] A _patch_ changeset for relevant packages has been added (for bug
fixes / features - run `pnpm changeset` in the project root)
- [x] I have reviewed this pull request (self-review)

## Future Work

Explore offering more flexibility around SDK versions used, or consider
always using the latest version without pinning.