Course: from zero to a t27 program on a chip, 27 lessons built on the widgets #1414

Goal

A free, step-by-step course at t27.ai/#/course for people who have never touched hardware: how a chip works, how to write a program for it in t27, and how the t27c compiler (and the native t27b backend) turns a spec into a bitstream on a real XC7A200T.

Shape

• 27 lessons in 9 modules of 3. Every lesson teaches one topic and is built around one widget from the WIDGETS gallery (specs/widgets/gallery.t27); every one of the 40 widgets appears in the course, either as a lesson's main widget or in its "also try" row.
• The course is orchestrated by a .t27 spec only. specs/course/course.t27 holds the module and lesson order, every word in English and Russian, the widget each lesson embeds, and test blocks for its shape. scripts/course-from-spec.mjs compiles it with the wasm compiler, runs its tests, checks every widget id against the gallery spec, and writes src/lib/course.generated.ts. No lesson text lives in TSX.
• Pure black page, no green backgrounds or glows (owner, 2026-10-05).
• Bilingual: EN and RU, switched by the site's language button.

Acceptance

• node scripts/course-from-spec.mjs --check passes in website-checks; a widget id missing from the gallery, a lesson without RU text, or a gallery widget not used anywhere fails it.
• #/course shows the module map; #/course/<lesson-id> shows one lesson with its widget embedded (?embed=1), prev/next, and works at 375 px.
• The previous paid-course page stays reachable from the course.
• Live on t27.ai after the apex publish run passes.

Boundary

Words and numbers come from the spec and from the widget pages; nothing is posted outward.