feat: add Mistral AI as a new provider#607

Open

welcoMattic wants to merge 2 commits intosteipete:mainfrom

welcoMattic:main

Commits on Mar 30, 2026

Resolve merge conflicts: keep both Perplexity and Mistral providers

welcoMattic
and
claude
committed
fix: use Gregorian calendar for billing queries and register Mistral in token-account catalog

welcoMattic
and
claude
committed