Fifty-two runnable concept bundles taking a reader from primitives & coercion to the event loop & V8 GC, then through zod, Hono, Drizzle and worker threads.
Each is a .ts file (ground truth, in a pnpm-workspace member) + .md guide; every value is printed by the .ts — never hand-computed.
Run any with just run <name> (tsx on Node + V8). Plus 22 companion library walkthroughs (hono / drizzle / ioredis) at the bottom.
Built subagent-per-bundle (max 4/batch) and verified via just sweep + just typecheck — 0 type errors across all 4 workspace members (core/metaprog/web/db); strict mode + all no* checks.
Tailwind Play CDN needs internet to style.