fix: add .exe extension for Windows in copy-native.js

[mypengpengli]

Problem

When running pnpm build:native on Windows, the build fails with:

Error: Native binary not found at D:\...\cli\target\release\agent-browser
Run "cargo build --release --manifest-path cli/Cargo.toml" first

The Rust compiler successfully builds agent-browser.exe, but the copy-native.js script looks for agent-browser (without the .exe extension).

Solution

Added platform detection to include the .exe extension when running on Windows:

const sourceExt = platform() === 'win32' ? '.exe' : '';
const sourcePath = join(projectRoot, `cli/target/release/agent-browser${sourceExt}`);

Testing

• Tested on Windows 10/11 x64
• pnpm build:native now completes successfully
• The native binary is correctly copied to bin/agent-browser-win32-x64.exe

[vercel]

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