# Rust Tauri MVP Implementation Plan

> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.

**Goal:** Build the first usable Rust + Tauri MVP for manual measurement entry and formula-based judgment.

**Architecture:** The Rust calculator is a pure library with explicit domain types and tests. Tauri commands and React UI are added after calculator behavior is verified.

**Tech Stack:** Rust, Cargo tests, Tauri, React, TypeScript, Ant Design, SQLite later.

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### Task 1: Calculator Crate

**Files:**
- Create: `Cargo.toml`
- Create: `src/lib.rs`
- Create: `src/domain.rs`
- Create: `src/calculator.rs`
- Create: `tests/calculator_tests.rs`

- [x] **Step 1: Write failing Rust tests**

Write tests that call the desired public API before implementation.

- [x] **Step 2: Run test to verify it fails**

Run: `cargo test`

Expected: fail because the calculator modules and functions are not implemented yet.

- [x] **Step 3: Implement domain and calculator**

Implement:

- `NuclideMeasurements`
- `CalibrationParams`
- `SampleInput`
- `CalculationResult`
- `Conclusion`
- `calculate_sample`

- [x] **Step 4: Run tests**

Run: `cargo test`

Expected: all calculator tests pass.

### Task 2: Tauri Shell

**Files:**
- Create/modify Tauri scaffold files under the repository root.

- [x] **Step 1: Add Tauri + React scaffold**

Use a Vite React TypeScript frontend and Tauri Rust backend.

- [x] **Step 2: Add calculate command**

Expose a command that accepts `SampleInput` JSON and returns `CalculationResult` JSON.

- [x] **Step 3: Build check**

Run: `npm run build`

Expected: frontend builds.

Run: `cargo check`

Expected: Rust side compiles.

### Task 3: MVP UI

**Files:**
- Modify React app files after scaffold exists.

- [x] **Step 1: Build input form**

Add manual entry fields for Ra, Th, and K repeated values.

- [x] **Step 2: Call Rust calculator**

Invoke the Tauri command and display returned values.

- [x] **Step 3: Show conclusion**

Display `OK`, `请增加试验次数至 6 次`, or `校准仪器后重新测量`.

- [x] **Step 4: Build verification**

Run: `npm run build`

Expected: build exits with code 0.

### Task 4: Next Stage Backlog

After the MVP is verified:

- Add SQLite history.
- Add Excel import/export.
- Add PDF or HTML report export.
- Add Windows packaging.

## Self-Review

- The plan implements the approved MVP only.
- The formula engine is isolated and testable before GUI work.
- No first-stage requirement depends on network services or external databases.
- History and report features are explicitly deferred to keep the first version small.