⚡ Bolt: Replace synchronous Groq client with AsyncGroq

[Adityasingh-8858]

💡 What:
Replaced the synchronous Groq client instantiation and completions creation with AsyncGroq and await inside the backend/main.py FastAPI routes (/ai-voice and /initiate-transfer). Added a new journal entry to .jules/bolt.md recording this FastAPI optimization learning.

🎯 Why:
Using a synchronous IO-bound client inside an async def routing function in FastAPI is a severe performance bottleneck. While the synchronous network request is in flight, the entire event loop is blocked, causing all other concurrent requests to hang until the call completes. This directly impacts the scalability and responsiveness of the application.

📊 Impact:
Massive improvement to concurrent throughput. The event loop is no longer suspended while waiting for the LLM to stream or return responses, meaning the server can serve multiple users or endpoints simultaneously without blocking.

🔬 Measurement:
This can be verified by load testing the /initiate-transfer endpoint or the /ai-voice endpoint with multiple concurrent clients; without await, subsequent requests queue behind the first one. Tests have been successfully run locally, verifying that functionality remains exactly identical.

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PR created automatically by Jules for task 2496928201364128679 started by @Deepaksingh7238

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[Copilot]

Pull request overview

This PR updates the FastAPI backend to use Groq’s async client so LLM calls don’t block the event loop, and records the learning in the Jules journal.

Changes:

• Switched Groq client usage in /ai-voice and /initiate-transfer from sync to AsyncGroq with await.
• Added a Bolt journal entry documenting the async-client performance rationale.
• Includes an incidental package-lock.json metadata change.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 2 comments.

File	Description
backend/main.py	Replaces synchronous Groq client calls with AsyncGroq + await inside async FastAPI routes.
frontend/package-lock.json	Removes a dev flag from the fsevents entry (appears unrelated to the PR’s stated goal).
.jules/bolt.md	Adds a journal note about using async clients in FastAPI to avoid event loop blocking.

Files not reviewed (1)

• frontend/package-lock.json: Language not supported

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[Copilot]

This PR is scoped to switching Groq usage in the backend, but it also changes frontend/package-lock.json (removing the "dev": true flag for fsevents). If this wasn’t intentional, please revert the lockfile change; if it was, please regenerate/commit the full lockfile changes from a single npm install run so the lock state is consistent and reviewable.

[Copilot]

asynccontextmanager is imported near the top of the file, but it’s also imported again later (from contextlib import asynccontextmanager). Since this PR is already touching the import block, please remove the duplicate import to avoid confusion and keep imports centralized.