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openspec/changes/enterprise-gaming-r3f-character/proposal.md

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+# OpenSpec Change: enterprise-gaming-r3f-character
+
+- **Change ID**: enterprise-gaming-r3f-character
+- **Package**: `@suaveplan/r3f-character`
+- **Category**: gaming/character
+- **Target path**: `gaming/character/r3f-character`
+- **Status**: PROPOSED
+- **Date**: 2026-04-24
+- **Reference spec**: `/mnt/s/web/suaveplan/enterprise/r3f-character.md`
+
+---
+
+## Summary
+
+Deliver `@suaveplan/r3f-character` on the genesis branch from scratch at enterprise quality. The package provides a full character controller for 3D games in React Three Fiber. It wires `@suaveplan/character-physics` (capsule controller) to a Rapier rigid body via the `@suaveplan/r3f-physics-rapier` backend; drives Three.js `AnimationMixer` for locomotion blend tree (idle/walk/run/jump/fall); applies `@suaveplan/animation-events` foot IK and procedural modifiers; and exposes a `Character` component and `useCharacter()` hook. Genesis adds structured errors, OTel frame-time histogram, and 100% coverage.
+
+---
+
+## Available workspace deps
+
+`@suaveplan/error`, `@suaveplan/types`, `@suaveplan/character-physics`, `@suaveplan/animation-events`, `@suaveplan/ik-solver`, `@suaveplan/events`, `@suaveplan/r3f-physics-rapier`, react, `@react-three/fiber`, `@react-three/drei`, three.
+
+---
+
+## Public API surface
+
+```ts
+function Character(props: CharacterProps): JSX.Element
+// model, animations, controller, physicsBackend
+
+function useCharacter(): CharacterContext
+// position, velocity, isGrounded, activeAnimation, playEmote()
+```
+
+---
+
+## File layout
+
+```text
+gaming/character/r3f-character/
+  package.json / tsconfig.json / vitest.config.ts
+  src/
+    index.ts / error-codes.ts
+    types/common.ts + md
+    core/
+      locomotion/ (ts + md + types + test + index)
+      animation-mixer-driver/ (ts + md + test + index)
+    context/
+      character-provider.tsx + md + test
+    hooks/use-character.ts + md + test
+    components/
+      Character/ (tsx + md + test + stories + index)
+  tests/integration.test.ts
+```

openspec/changes/enterprise-gaming-r3f-character/tasks.md

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+# Tasks: enterprise-gaming-r3f-character
+
+## 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 + types
+
+- [ ] Create `gaming/character/r3f-character/`
+
+## Phase 2 — Locomotion state machine
+
+- [ ] idle/walk/run/jump/fall transitions from speed + isGrounded
+- [ ] Tests + docs
+
+## Phase 3 — AnimationMixer driver
+
+- [ ] Blend weight updates, crossfade, AnimationAction pool
+- [ ] Tests + docs
+
+## Phase 4 — Character provider + `useCharacter`
+
+- [ ] Context bridging physics + animation state
+- [ ] Tests + docs
+
+## Phase 5 — `Character` component + story
+
+- [ ] Wires physics backend, animation mixer, foot IK, procedural modifiers
+
+## Phase 6 — Pre-publish gate
+
+- [ ] `bunx turbo lint typecheck test --filter=@suaveplan/r3f-character` green
+- [ ] 100% coverage
+- [ ] Publish: `bun scripts/publish.ts --package @suaveplan/r3f-character`