Documentation Layout

The docs are classified by module/system, not by document type.

docs/
  en/                  English source pages
  zh/                  Chinese source pages
  modules/             Per-module landing pages (one .md per module)
  dev-instructions/    contribution / extension guides

Each module landing page in modules/ links to the relevant English and Chinese pages, plus any architecture or dev notes for that module.

Why modules/ instead of per-module dirs?

• Each module's landing page (modules/tis.md, modules/webui.md, ...) is a single file that aggregates links to its user guide, Chinese version, and any architecture or dev notes — easier to scan than opening a directory.
• The slug (/modules/tis/) is distinct from the user-guide slug (/tis/), so cross-links never collide.
• New contributors can look at dev-instructions/ for how to build/extend a module, while users can look at en/ or zh/.