CAD Intuition Gym

A static web gym for beginner CAD modeling judgment: make a modeling decision, change the design, and feel the consequence.

The product spine is:

Model your intent, not your accident.

Status

v3 built, on a branch awaiting Justin's playthrough. Six exercises (E1-E6) are authored, playable end-to-end, and covered by the QA harness at desktop and mobile widths. The live site at https://lpcode808.github.io/CAD-Intuition-Gym/ serves main (five exercises) until the v3 branch merges.

v2 (_planning/V2-SCOPE.md) is fully shipped and merged. v3 (_planning/V3-SCOPE.md, all three items approved by Justin 2026-07-12) is built on branch claude/sub-agent-setup-favz3d: share/OG meta with a real consequence-moment preview image, a completion recap ("What you leave with") once every exercise is done, and E6 — "Put it downstream", feature order and dependency, reusing E5's in-scene feature-tree vocabulary. E6 and the recap are new content/scene material, so the branch stays unmerged until Justin plays it.

GitHub:

• Repo: https://github.com/lpcode808/CAD-Intuition-Gym

See HANDOFF.md for the current state, QA notes, and continuation checklist.

Run Locally

This app has no build step. Open index.html directly, or serve the folder:

python3 -m http.server 8000

Then open http://localhost:8000.

Files

• PRD.md — product spec and resolved scope decisions.
• _planning/FABLE-BUILD-BRIEF.md — original build dispatch brief.
• _planning/V2-SCOPE.md — v2 scope, fully shipped 2026-07-11.
• _planning/V3-SCOPE.md — v3 scope, approved and built 2026-07-12 (merge gated on Justin's playthrough).
• _planning/FABLE-PROMPT-2026-07-12.md — ready-to-paste prompt for the next Fable/Opus thread (current). Earlier dated prompts in _planning/ are superseded prior rounds.
• HANDOFF.md — current continuation state.
• CLAUDE.md + .claude/agents/ — Claude Code project notes and committed subagent definitions (slice-builder, qa-verifier, copy-auditor) for the orchestrator/executor split.
• index.html, style.css, app.js, svg.js, exercises.js — static app.
• qa/qa-check.mjs — Playwright QA harness for the full E1-E6 loop.

Persistence

Progress is stored only in this browser under:

cad-gym.v1
cad-gym.unit

No data leaves the browser.