suaveplan/openspec/changes/enterprise-gaming-r3f-building/tasks.md

Tasks: enterprise-gaming-r3f-building

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/scene/r3f-building/ (@suaveplan/r3f-building, 0.1.0, sideEffects: false)

Phase 2 — Types + context/hook

• BuildingModeProvider, useBuildingMode
• Tests + docs

Phase 3 — Components + stories

• PlacementGhost — translucent mesh + valid/invalid color
• SnapIndicator — sphere at snap socket
• PlacedPieces — instanced placed pieces
• BuildingMode — orchestrator + controller keybind wiring

Phase 4 — Pre-publish gate

• bunx turbo lint typecheck test --filter=@suaveplan/r3f-building green
• 100% coverage
• Publish: bun scripts/publish.ts --package @suaveplan/r3f-building