Usage counter

Anonymous launch counter. Every time the patched Firefox starts, it issues a single HTTPS GET to the launch.txt asset attached to this release. The number of total launches across all users equals the download_count of launch.txt (visible via the README badge or gh api repos/feder-cr/invisible_firefox/releases/tags/usage-counter).

The ping is gated by the pref invisible_firefox.usage_ping.enabled (default true). To disable permanently, remove the corresponding hook in browser/components/BrowserGlue.sys.mjs and rebuild from source.

This release is intentionally not a Firefox build — it only exists to host the counter asset.