Decompose architecture into 35 atomic tasks across 10 generations for implementation

tasks/setup/project-init.md

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+---
+id: setup/project-init
+name: Initialize Cargo workspace with wraith, wraith-core, and wraith-napi crates
+status: pending
+depends_on: []
+scope: moderate
+risk: low
+impact: project
+level: implementation
+---
+
+## Description
+
+Set up the Rust workspace from scratch. The repo currently has only `docs/` and `.git/`. Initialize a Cargo workspace with three crate directories following the architecture spec:
+
+- **`wraith-core`** — library crate with feature flags (`tls`, `iroh`, `acme`). All core logic lives here.
+- **`wraith`** — binary crate depending on `wraith-core`. CLI entry point.
+- **`wraith-napi`** — napi-rs crate for the Node.js native addon (skeleton only at this stage).
+
+Per overview.md: `russh`, `tokio`, `clap`, `tracing`, `anyhow`/`thiserror` are core dependencies. `tokio-rustls`, `rustls`, `rustls-acme`, `iroh` are feature-gated.
+
+## Acceptance Criteria
+
+- [ ] `Cargo.toml` workspace root with `[workspace]` members: `crates/wraith-core`, `crates/wraith`, `crates/wraith-napi`
+- [ ] `crates/wraith-core/Cargo.toml` with library crate, feature flags: `tls` (tokio-rustls + rustls), `iroh` (iroh), `acme` (rustls-acme, implies `tls`)
+- [ ] Core dependencies listed: `russh`, `tokio` (full), `tracing`, `anyhow`, `thiserror`, `tokio-util`
+- [ ] `crates/wraith/Cargo.toml` with binary crate, depends on `wraith-core` with default features, `clap` with `derive` feature
+- [ ] `crates/wraith-napi/Cargo.toml` with `cdylib` crate type, depends on `wraith-core`, `napi` and `napi-derive`
+- [ ] `crates/wraith-core/src/lib.rs` with module skeleton: `pub mod transport; pub mod client; pub mod server; pub mod auth; pub mod socks5; pub mod error;`
+- [ ] `crates/wraith/src/main.rs` with minimal `fn main()` skeleton
+- [ ] `crates/wraith-napi/src/lib.rs` with `#[macro_use] extern crate napi_derive;` and empty skeleton
+- [ ] `.gitignore` covers `target/`, `node_modules/`
+- [ ] `cargo check` succeeds for all workspace members
+- [ ] Feature flags resolve correctly: `cargo check -p wraith-core --features tls`, `--features iroh`, `--features acme`
+
+## References
+
+- docs/architecture/overview.md — package structure, dependencies, feature flags
+- docs/architecture/napi-and-pubsub.md — wraith-napi crate purpose
+
+## Notes
+
+> To be filled by implementation agent
+
+## Summary
+
+> To be filled on completion