The profile phone input was dead UI — there is no phone column in the
schema, PATCH /users/me only accepts { name, image }, and it was never
loaded, so saving the profile sent an empty phone that the API silently
dropped. Remove the field and stop sending phone. Real phone capture
needs a backend migration (follow-up).
Also fix the "member since" date hard-coding tr-TR; it now follows the
active locale like the changelog already does.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>