* Fix WhatsApp Slim migration targeting brave-origin-beta instead of brave-origin
* Add migration to append WhatsApp Slim to Brave Origin for existing installs
* Don't corrupt flags files that lack a trailing newline
Appending --load-extension= with echo assumed the file ended in a newline.
A hand-edited flags file without one got the flag concatenated onto the
previous line, losing both that flag and the extension.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Co-authored-by: akashgagda <akashgagda@users.noreply.github.com>
Co-authored-by: David Heinemeier Hansson <david@hey.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
