fixture crate 特意为 wasm32-unknown-unknown 构建：默认的 WASI Preview 1 适配器会添加禁止的 ambient 导入。
这些示例涵盖了纯 Market（strategy）、External（external-strategy）、Portfolio（portfolio-strategy）、混合 Market/Built-in/External（mixed-strategy）、time-series 与 cross-sectional Factor ABI v2（multi-output-factor、cross-sectional-factor）以及重复 Factor 别名（repeated-factor-strategy）的 Feature Slot Plan。
在运行宿主集成测试之前构建这些 fixture。在同时安装了 Homebrew Rust 和 rustup 的机器上，将 rustup 的 shim 放在前面，以便 cargo-component 能够看到已安装的 WASM 目标：
cd src-tauri/fixtures/factor
rustup run stable cargo component build --target wasm32-unknown-unknown
cd ../strategy
rustup run stable cargo component build --target wasm32-unknown-unknown
cd ../external-strategy
rustup run stable cargo component build --target wasm32-unknown-unknown
cd ../portfolio-strategy
rustup run stable cargo component build --target wasm32-unknown-unknown
cd ../mixed-strategy
rustup run stable cargo component build --target wasm32-unknown-unknown
cd ../multi-output-factor
rustup run stable cargo component build --target wasm32-unknown-unknown
cd ../cross-sectional-factor
rustup run stable cargo component build --target wasm32-unknown-unknown
cd ../repeated-factor-strategy
rustup run stable cargo component build --target wasm32-unknown-unknown
cd ../..
cargo test