- percy_get_build detail=snapshots/changes fetched only the first page
  (page[limit]=30, cursor never followed) and reported partial counts as
  complete. Now fetches the full set and follows meta.pagination.next_cursor
  with stall/page-cap guards, surfacing a warning if truncated.
- detail=changes returned 0 items: the API resolves filter[category]=changed
  through filter[subcategories][]; now sent (unreviewed, changes_requested,
  approved). Same fix in percy_search_builds.
- Diff ratios were rounded with toFixed(1), hiding small diffs (0.02% -> 0.0%).
  New formatDiffPercent shows two decimals with a <0.01% floor, applied across
  v2 tools and v1 workflows.
- percyGet now supports repeated array params (filter[...][]), also fixing
  percy_search_builds dropping all but the last browser_ids/widths value.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>