Re: [PATCH v2 5/5] docs(l10n): add AI agent instructions to review translations

> +### Task 4: Review translation quality
> +
> +Review may target the full `po/XX.po`, a specific commit, or changes since a
> +commit. When asked to review, follow the steps below. **Note**: This task uses
> +`git-po-helper compare`; if `git-po-helper` is not available, the task
> +cannot be performed.
> +
> +1. **Check for existing review**: Evaluate the following in order:
> +
> +   - If `po/review-input.po` does **not** exist, proceed to step 2 regardless
> +     of any other files (e.g., batch or JSON files).
> +   - If both `po/review-input.po` and `po/review-result.json` exist, go
> +     directly to step 5 (Merge and summary) and display the report.
> +     Do **not** check for batch or other temporary files; no further review
> +     steps are needed.
> +   - If `po/review-input.po` exists but `po/review-result.json` does not,
> +     go to step 4 (Process one batch) to continue the previous review.
> +
> +2. **Extract entries**: Run `git-po-helper compare` with the desired range and
> +   redirect the output to `po/review-input.po`. Do not use `git show` or
> +   `git diff`—they can fragment or lose PO context (see "Comparing PO files
> +   for translation and review" under git-po-helper).
> +
> +3. **Prepare review batches**: Run the script below to clean up any leftover
> +   files from previous reviews and split `po/review-input.po` into one or
> +   more `po/review-input-<N>.json` files (dynamic batch sizing). Run as a
> +   single script (define the function, then call it):