Support Sarvam API

[aryamthecodebreaker]

Before filing

• I searched existing issues and this isn't a duplicate

Area

Harness server / API (server/)

Problem

Sarvam gives a completely free API key,its a shame that we cant use it here!

Proposal

i propose you add it

Alternatives considered

No response

[kundannett-creator]

Sarvam's API is OpenAI-compatible (it has a /chat/completions endpoint and accepts Authorization: Bearer <key>), so this should already work through the existing generic driver in server/drivers/openai-compat.ts - just point its url at https://api.sarvam.ai/v1 and provide your Sarvam API key via the driver's apiKeyEnv config. No new driver code needed.