[BUG] Active Google AI Pro shows as "Antigravity Starter Quota" — userTier empty in AuthProvider (macOS, 2.11.0)

My Google AI Pro subscription is active and correctly recognized in the Gemini
web app, but Antigravity marks the same account as ineligible and limits it to
the free Starter Quota.

Account: a....@gmail.com
Antigravity version: 2.11.0
Platform: macOS 15 (Darwin 25.5.0), Apple Silicon

WHAT I SEE
Settings > Account shows:
“Your Plan: Antigravity Starter Quota”
“This account is ineligible for higher rate limits through a Google AI plan
at this time.”

The same account shows an active Google AI Pro plan in the Gemini web app, so
the subscription itself is valid — only Antigravity fails to honor it.

LOG EVIDENCE
~/Library/Logs/Antigravity/language_server.log shows the auth provider
receiving a completely empty entitlement on every startup:

[AuthProvider] SetUserTier called with userTier: “”, tierDisplayName: “”
[AuthProvider] SetProjectID called with projectID: “”
[AuthProvider] SetLocation called with location: “”
[AuthProvider] SetEnableBusinessLogin called with enable: true

userTier is an empty string rather than an actual tier value, so the client
falls back to Starter Quota. There is no cached tier stored locally, so this
is coming from the backend on every launch.

Trajectory IDs for failed runs:
40867a3a-5732-450d-bf28-f385a4b7…
832a8a84-c56a-4648-b14d-adcb981c…

WHAT I ALREADY TRIED (no effect)

  • Signed out and signed back in
  • Enabled Telemetry
  • Full application restart after each change
  • Confirmed the signed-in email matches the subscribed account

REQUEST
Please re-sync the entitlement for this account, or tell me which specific
eligibility condition is failing so I can fix it on my side.