Authoring standard 4 requires the human first in `author`; the skill was
drafted with Hermes so the tool was credited instead. The intro cited a
third-party product, which is allowed only in LICENSE/credit lines. Also
adds metadata.hermes.category and lowercases tags to match sibling
skills; docs page regenerated for this skill only.
Tests: the two prose tests asserted sentence literals (change-detectors);
they now assert structure — three Procedure phases, a "Done when" per step,
standard headings, and the tool wiring (cronjob/desktop_preview/[SILENT]).