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

Tasks: enterprise-gaming-r3f-pathfinding

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/gameplay/r3f-pathfinding/ (@suaveplan/r3f-pathfinding, 0.1.0, sideEffects: false)

Phase 2 — Types + error codes

• src/types/common.ts + common.md
• src/error-codes.ts

Phase 3 — NavMesh + pathfinding core

• navmesh-builder.ts — bake walkable mesh from geometry
• astar.ts — A* with polygon graph
• funnel.ts — string-pull funnel algorithm
• Tests + docs

Phase 4 — Steering + crowd

• behaviours.ts — seek/flee/arrive/separation/cohesion
• orca.ts — local avoidance for crowd agents
• Tests + docs

Phase 5 — Context + hook

• NavMeshProvider + usePathfinding hook
• Tests + docs

Phase 6 — Components

• NavMeshDebug — wireframe overlay
• SteeringAgent — per-agent steering apply
• Crowd — N-agent management
• Tests + Storybook stories for each

Phase 7 — Integration tests

• tests/integration.test.ts — findPath, crowd avoidance

Phase 8 — Pre-publish gate

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