Course 8: The ternary machine -- 27 lessons, a live widget in each, every number from a compiled t27 spec #1618

Owner, 2026-10-11: build the courses recommended in #1611, and make them engaging with visualisations.

Course ternary-computing ("The ternary machine"), 27 lessons in 9 modules:

• trits;
• Kleene logic;
• adders;
• multiplying without a multiplier;
• trits in binary memory;
• the TRI-27 instruction word;
• a ternary machine;
• three-way answers;
• ternary neurons.

Each lesson opens its own interactive widget (27 tc-* widgets). Each widget draws through one shared kit, public/widgets/ternary-kit.js, and computes nothing itself. Every number comes from a compiled t27 spec: specs/ternary/trits.t27 and radix_economy.t27 (gHashTag/t27#8979), or specs/isa/ternary_encoding.t27.

Done when:

• the course, its RU bundle, the gallery and the share pages are generated;
• every course, widget and logic check passes;
• the lesson works in a real browser at 390 px and 1280 px;
• a blog post with a figure is published.