UI.18 Words, help, add-ons guide, release note and the "Pick your workspace" video for the wave

Every new word under shell.ws.* in en, es-MX and id with bin/test-shell-lang.mjs knowing the families (the language sweep carries the other 80 locales); help topics common/layout-drafting (new), layout-own (dragging, customizing, windows), layout-ribbon and layout-toolbox (the switcher, the status bar), arrange-panels (one tear-off); the add-ons repo docs/LAYOUTS.md v2 section and a second example layout that uses windows and corner overlays; the release note's interface section with the contact sheet (UI.17) and the icon count (UI.14); the 0.7 "Pick your workspace" video re-filmed on the Drafting layout with a ribbon torn to a second monitor (video-designer; the file handed to the owner, never posted).