Decompose architecture into 35 atomic tasks across 10 generations for implementation

tasks/napi/project-setup.md

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+---
+id: napi/project-setup
+name: Set up wraith-napi project with napi-rs build tooling and TypeScript types
+status: pending
+depends_on:
+  - setup/project-init
+scope: moderate
+risk: low
+impact: component
+level: implementation
+---
+
+## Description
+
+Set up the napi-rs project for the `@alkdev/wraith` Node.js native addon. This includes the napi-rs build configuration, TypeScript type definitions, and the package structure.
+
+Per ADR-015 and ADR-016: napi-rs is the FFI bridge, and the wrapper exposes `connect()` and `serve()` functions. The NAPI layer is transport-agnostic — it doesn't know about pubsub's `EventEnvelope`.
+
+The Cargo.toml skeleton was created in setup/project-init. This task configures the actual napi-rs build pipeline, TypeScript types, and verifies the build works.
+
+## Acceptance Criteria
+
+- [ ] `crates/wraith-napi/` has `Cargo.toml` with `crate-type = ["cdylib"]`, `napi` and `napi-derive` dependencies
+- [ ] `crates/wraith-napi/src/lib.rs` with napi module registration
+- [ ] `packages/wraith-napi/` directory (or similar) with `package.json` named `@alkdev/wraith`
+- [ ] `packages/wraith-napi/tsconfig.json` for TypeScript type generation
+- [ ] TypeScript type definitions for `WraithConnectOptions`, `WraithServeOptions`, `WraithServer`, `ConnectionInfo` matching napi-and-pubsub.md interfaces
+- [ ] `napi.config.js` or `NapiRs.config` with correct cargo path, module name
+- [ ] Build command: `npm run build` builds the native addon
+- [ ] Feature flags: `iroh` feature optional; base package includes tcp + tls
+- [ ] `npm install` and initial build succeed
+
+## References
+
+- docs/architecture/napi-and-pubsub.md — NAPI Wrapper section, TypeScript interfaces
+- docs/architecture/decisions/015-napi-rs-for-ffi-bridge.md — napi-rs choice
+- docs/architecture/decisions/016-napi-expose-connect-and-serve.md — both connect() and serve()
+
+## Notes
+
+> To be filled by implementation agent
+
+## Summary
+
+> To be filled on completion