Method findExtensionPath

browse/src/browser-manager.ts:287–318

* Find the gstack Chrome extension directory. * Checks: repo root /extension, global install, dev install.

()

   * Checks: repo root /extension, global install, dev install.
   */
  private findExtensionPath(): string | null {
    const fs = require('fs');
    const path = require('path');
    const candidates = [
      // Explicit override via env var (used by GStack Browser.app bundle)
      process.env.BROWSE_EXTENSIONS_DIR || '',
      // Relative to this source file (dev mode: browse/src/ -> ../../extension)
      path.resolve(__dirname, '..', '..', 'extension'),
      // Global gstack install
      path.join(process.env.HOME || '', '.claude', 'skills', 'gstack', 'extension'),
      // Git repo root (detected via BROWSE_STATE_FILE location)
      (() => {
        const stateFile = process.env.BROWSE_STATE_FILE || '';
        if (stateFile) {
          const repoRoot = path.resolve(path.dirname(stateFile), '..');
          return path.join(repoRoot, '.claude', 'skills', 'gstack', 'extension');
        }
        return '';
      })(),
    ].filter(Boolean);

    for (const candidate of candidates) {
      try {
        if (fs.existsSync(path.join(candidate, 'manifest.json'))) {
          return candidate;
        }
      } catch (err: any) {
        if (err?.code !== 'ENOENT' && err?.code !== 'EACCES') throw err;
      }
    }
    return null;
  }

  /**
   * Set the proxy config applied to chromium.launch() in launch() and