v0.22.1

A calmer reading interface, and one statement of the kinds of published page.

Changed

• The sidebar. Folders are named at the size of the documents in them,
  at weight 600 in the muted ink; the folders that hold the current page take
  the strong ink. Rows are taller, with 0.4rem of inline padding, a thin
  chevron and clearer hover and current-page fills. The sidebar is 20.75rem
  wide.
• Format icons. A PDF, spreadsheet, video or audio page carries a colored
  tile of its format — the letters PDF, a grid, a play button, sound bars —
  after its title in the sidebar, and before it in the section listing, the
  full index, the recency band and the home page's folder cards, in place of
  a badge or the outline of a page. The file-type colors are the one
  exemption from the reserved accent in DESIGN.md.
• Breadcrumbs are set at 0.8125rem and weight 500 with chevron
  separators, and the title sits 1rem below them.
• Headings. The sync drops bold that covers a whole heading, as editors
  add it in Google Docs, and the page draws bold inside a heading at 700.
• A spreadsheet's page records whether it is a Google Sheet, which the
  source link's label reads instead of the address.
• The header's mark is the project's brand.faviconPath, not a fixed
  /favicon.svg, and keeps the file's own shape.

Added

• brand.faviconDarkPath, optional: the mark drawn for a dark ground. The
  header shows it under the dark theme the reader chose on the site, whatever
  the system's setting, and a browser with a dark interface shows it in the
  tab.

Internal

• @ctcstack/ctcdocs-core/document-format names the kinds of page, their
  sourceType, badges, nouns and MCP formats once. The sync, the site and
  the Worker read them from there, and the PDF, spreadsheet and recording
  facts a page records are one zod schema each.

Upgrade note

Bump the packages and the workflow pins, then run a sync. NORMALIZER_VERSION
and SHEET_VERSION moved, so that sync exports every Google Doc and reads
every spreadsheet again once, and the MCP server stores every document again
on its next schedule. Until it runs, headings keep their bold and a Google
Sheet's label is read from its address, as before.