Missing grok image models/Yall ran out of balance again

All requests (on non-free models) return 402 `Exception('TEXT 402: {"error":{"message":"Insufficient credits. Add more using https://openrouter.ai/settings/credits","code":402}}')`

Also grok imagine models are missing `x-ai/grok-imagine-image-quality`

Search the repository for the reported 402 error text and for the grok imagine model name to locate the request handling and model configuration. Reproduce a non-free request and check the model listing; done means the credit error is addressed and x-ai/grok-imagine-image-quality is available.

Written by the indexing model from the issue text.