suaveplan/openspec/changes/enterprise-gaming-mixamo/tasks.md

Tasks: enterprise-gaming-mixamo

0. Pre-flight (non-negotiable)

• 0.1 Confirm clean working tree (git status reports nothing) and no in-flight worktrees with uncommitted work (git worktree list then git status in each)
• 0.2 If any worktrees exist under .claude/worktrees/, account for each one: still-active agent, work-pending-merge, or stale-and-prune. Stale worktrees MUST be removed (git worktree remove) before opening a new one — code that has been lost twice on main is the failure mode this guards against.
• 0.3 Confirm the package set in MANIFEST.md matches find packages -maxdepth 3 -name package.json count. Drift here means a prior change archived without regenerating the manifest.

Phase 1 — Scaffold

• Create gaming/rigs/mixamo/ (@suaveplan/mixamo, 0.1.0, sideEffects: false)
• tsconfig.json, vitest.config.ts

Phase 2 — Error codes & constants

• src/error-codes.ts — MixamoError, MIXAMO.* codes
• src/constants/index.ts — MIXAMO_BONE_NAMES (65 entries), MIXAMO_ROOT_BONE

Phase 3 — Types

• src/types/common.ts + common.md

Phase 4 — Skeleton normalisation

• src/core/normalise/normalise.ts — normalizeMixamoSkeleton, T-pose extraction, bone index map
• Tests + docs

Phase 5 — Root motion

• src/core/root-motion/root-motion.ts — strip horizontal translation + yaw from root track, return RootMotionData
• Tests + docs

Phase 6 — Integration tests

• tests/integration.test.ts — normalise → extract root motion → verify stripped clip has no root translation

Phase 7 — Pre-publish gate

• bunx turbo lint typecheck test --filter=@suaveplan/mixamo green
• 100% coverage
• Publish: bun scripts/publish.ts --package @suaveplan/mixamo