Fix flashcards API endpoints

[atul-upadhyay-7]

Fixes #449. Renamed RAG endpoints to match frontend and added Express proxy routes.

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Reviewing files that changed from the base of the PR and between e976c8b and b1576a7.

📒 Files selected for processing (3)

• rag-service/main.py
• server.js
• server.test.js

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[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Adds “flashcards” functionality by proxying new session flashcard endpoints through the Node server to the RAG service, updates the RAG service route paths to match, and adjusts tests to use a signed Supabase JWT.

Changes:

• Add /sessions/flashcards and /sessions/flashcards/progress endpoints to server.js with request validation and RAG error propagation.
• Rename/align RAG service endpoints to /sessions/flashcards and /sessions/flashcards/progress.
• Extend server tests to cover the new endpoints and update Authorization headers to use a signed JWT.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 7 comments.

File	Description
server.test.js	Updates auth header handling and adds tests for new flashcards endpoints + internal token forwarding.
server.js	Adds validated proxy routes for flashcard generation and progress updates to the RAG service.
rag-service/main.py	Aligns FastAPI route paths with the new server proxy endpoints and marks them as protected routes.

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