The proxy launch used __dirname to find aware-cam-proxy.exe, which
points to a temp extraction directory in portable builds. Added
getAppDirectory() helper that resolves the actual .exe location via
PORTABLE_EXECUTABLE_FILE. Rewrote landing page as a simple kit download
page. Added build-kit script to bundle app + proxy + extension into zip.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
