Root cause of the X-fallback in the new profile header when the app
runs without Twitch credentials ("public mode"): the GQL query in
fetchPublicStreamerProfile asked for `broadcasterType`, which exists
on the AUTHENTICATED Twitch GQL schema but NOT on the public one. The
public endpoint returned `errors[]` with "Cannot query field
broadcasterType on type User", which fetchPublicTwitchGql correctly
treats as a complete failure and returns null. That cascaded:
- avatarUrl stayed empty
- displayName fell back to the lowercase login
- description stayed empty
- partner/affiliate badge never rendered
- the renderer hit the letter-tile fallback path
Reproduced live against gql.twitch.tv with a curl-equivalent: the
exact query worked when broadcasterType was swapped for the public-
schema field roles{isPartner isAffiliate}. xrohat correctly comes
back as Partner, with the full 150x150 avatar URL, real displayName
"xRohat", and 1.25M follower count.
The 4.6.18 data-URL fetch fix is still right (Electron renderer img
loading against the Twitch CDN was its own minor headache) — it just
never got exercised because we never had a URL to fetch in the first
place. With this fix the data-URL path now activates on every
public-mode profile load, and avatars actually render.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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