suaveplan/openspec/changes/enterprise-gaming-behavior-tree/tasks.md

Tasks: enterprise-gaming-behavior-tree

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/ai/behavior-tree/ (@suaveplan/behavior-tree, 0.1.0, sideEffects: false)
• tsconfig.json, vitest.config.ts

Phase 2 — Error codes & constants

• src/error-codes.ts + src/constants/index.ts

Phase 3 — Types

• src/types/common.ts + common.md

Phase 4 — Blackboard

• src/core/blackboard/blackboard.ts — get/set/has/delete/clear/clone
• Tests + docs

Phase 5 — Leaf nodes

• src/core/nodes/leaves.ts — action, condition, wait with clock
• Tests + docs

Phase 6 — Composite nodes

• src/core/nodes/composites.ts — sequence, selector, parallel with success/failure policies
• Tests + docs

Phase 7 — Decorator nodes

• src/core/nodes/decorators.ts — inverter, repeater, cooldown, timeout
• Tests + docs

Phase 8 — Runner

• src/core/runner/runner.ts — tick loop, reset, OTel histogram, lastStatus
• Tests + docs

Phase 9 — Fluent builder

• src/builder/builder.ts — bt() chainable API producing TreeNode tree
• Tests + docs

Phase 10 — Property tests

• tests/property.test.ts — sequence: all-success → SUCCESS; selector: first-success → SUCCESS; parallel policies

Phase 11 — Pre-publish gate

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