Given up to 50 keys and an instant, returns the issues updated since with
their status, new comments (author id, plain-text body, own comments
flagged) and status transitions, plus the instance's own account. JQL dates
are converted to the account's time zone; malformed keys are never queried;
a deleted key falls back to per-key reads instead of failing the batch.
get_comments gains order, start_at and author_id, and decodes HTML entities.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
