Add WSL invocation support to zoekt-manager.js for Windows

[Joxx0r]

Problem

On Windows, Zoekt binaries cannot be compiled natively (unix.Umask undefined in Go build). Zoekt only works reliably inside WSL2. The embark-claude-code installer (v0.5.3+) now installs Zoekt exclusively via WSL on Windows and generates config.json with zoekt.wsl: true.

However, zoekt-manager.js currently spawns Zoekt binaries directly via child_process.spawn(), which doesn't work for WSL-installed binaries when the Node.js service runs on Windows.

Required Changes

When config.zoekt.wsl is true, the zoekt-manager should:

1. Constructor

Add this.wslMode = config.wsl || false; property.

2. _findBinaries()

Detect WSL binaries:

if (this.wslMode) {
  try {
    const wslPath = execSync('wsl -d Ubuntu -- which zoekt-index', { encoding: 'utf-8' }).trim();
    if (wslPath) {
      this.zoektIndexPath = wslPath;
      this.zoektWebPath = wslPath.replace('zoekt-index', 'zoekt-webserver');
      return true;
    }
  } catch {}
}

3. _spawn(binaryPath, args)

Wrap invocations through WSL with Windows→WSL path conversion:

_spawn(binaryPath, args) {
  if (this.wslMode) {
    const wslArgs = args.map(a => this._toWslPath(a));
    return spawn('wsl', ['-d', 'Ubuntu', '--', binaryPath, ...wslArgs], {
      stdio: ['ignore', 'pipe', 'pipe']
    });
  }
  return spawn(binaryPath, args, { stdio: ['ignore', 'pipe', 'pipe'] });
}

_toWslPath(p) {
  const m = p.match(/^([A-Za-z]):\(.*)$/);
  if (m) return `/mnt/${m[1].toLowerCase()}/${m[2].replace(/\/g, '/')}`;
  return p;
}

4. _killStaleWebservers()

Use WSL-wrapped pkill:

if (this.wslMode) {
  execSync('wsl -d Ubuntu -- pkill -9 -f zoekt-webserver 2>/dev/null', { stdio: 'ignore', timeout: 5000 });
}

5. HTTP health checks

No change needed — http://127.0.0.1:6070 works across the WSL2/Windows boundary.

Context

• The embark-claude-code installer generates zoekt.wsl: true in config.json when running on Windows
• The Node.js service runs on Windows, Zoekt processes run inside WSL
• Mirror and index directories are on the Windows filesystem, accessible from WSL at /mnt/c/...
• Path conversion (C:\foo\bar → /mnt/c/foo/bar) is critical for -index and -listen arguments

[Joxx0r]

Obsolete — the architecture was restructured so the entire service (including Zoekt) runs natively inside WSL. There is no longer a need to invoke WSL-hosted Zoekt from a Windows Node.js process. Duplicate of #28.