Waystone — desktop skeleton (Spike B)

Proof-of-architecture for Waystone: Tauri v2 + Vite/React + Milkdown, with a single Rust command hitting SQLite FTS5. It exists to validate the riskiest integration before building for real — the JS ↔ Rust ↔ SQLite round-trip.

See the full plan in ~/Developer/My_Notes/1. Projects/Waystone/Migration_Plan.md.

The architecture this proves (the renderer ↔ Rust split)

Renderer (JS, in the webview)          Rust backend (Tauri)
─────────────────────────────          ─────────────────────────────
React UI + Milkdown editor    ──invoke("search_notes")──►  SQLite FTS5 query
  (markdown lives here)       ◄──────  Vec<NoteHit>  ──────  (rusqlite, bundled)

• Milkdown stays in JS — it's a web editor (ProseMirror); it cannot move to Rust.
• Search / DB / file I/O live in Rust — src-tauri/src/lib.rs seeds an in-memory FTS5 table and exposes search_notes(query). In the real app this becomes the on-disk index over the markdown vault.
• The only seam between them is invoke(...) — exactly where the old Next.js fetch('/api/notes') boundary used to be.

Prerequisites

Node + pnpm are already set up. You still need Rust (Xcode CLT is present):

# one-time, installs to ~/.cargo and ~/.rustup
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
# then restart the shell, or:  source "$HOME/.cargo/env"

Run

pnpm install          # already done
pnpm tauri dev        # compiles Rust (slow first time ~minutes), opens the window

Type in the search box (rust, para, markdown) — results come from Rust/FTS5. Edit on the right — that's Milkdown.

What's verified vs. not

• ✅ Frontend: pnpm build passes (tsc + Vite) — React, Milkdown, and the invoke call all compile.
• ⏳ Rust: written but not yet compiled here (Rust wasn't installed). First pnpm tauri dev will compile it. One thing to confirm: rusqlite's bundled feature includes FTS5 (it should); if CREATE VIRTUAL TABLE ... fts5 errors, that's the flag to check. The pinned rusqlite = "0.32" may need a version bump.

Layout

src/App.tsx              renderer: Milkdown editor + FTS5 search UI
src-tauri/src/lib.rs     Rust: Db state + search_notes command (FTS5)
src-tauri/Cargo.toml     adds rusqlite (bundled)

waystone