XXB Learning Companion

Update

XXB desktop question-bank import reached a usable local test state

Summary

XXB now has a running Tauri desktop client and a clearer question-bank import flow that turns uploaded papers into structured questions with stem clues, key points, and per-option explanations.

Progress

1. Started the Windows Tauri desktop client locally and verified that the real window opens.
2. Kept the desktop client pointed at the production entry: https://xxb.life/exam-coach.
3. Added a question enrichment step during bank import so each structured question can carry stem clues, key points, and per-option explanations.
4. Connected both PostgreSQL-backed storage and file-backed local storage to the same enrichment helper.
5. Updated the Exam Coach question-bank page so imported drafts and saved banks use the same formal question card.
6. Changed the import preview to show the backend-enriched questions returned by the import endpoint, rather than only the raw local recognizer result.
7. Added focused checks for the enrichment helper and verified locale JSON validity.
8. Captured a desktop screenshot showing the XXB login page in the Tauri window.

Problems

The frontend-wide lint/typecheck path is still slow in this workspace and surfaces unrelated existing ChatPanel/path-alias issues when run outside the normal Next project context. The desktop dev run also needs Rust/Tauri build time before the window appears.

Solutions

The implementation was kept narrow: enrichment is isolated in one service helper, existing import endpoints continue using the same table shape, and the UI reads optional fields so older imported questions can still render. Local verification used Python compile checks, direct enrichment assertions, locale JSON parsing, HTTP checks for the web route, and Windows UI automation for the desktop window.

Next actions

1. Run a real paper import through the desktop window after login and inspect whether the generated clues and option explanations are useful enough for teachers.
2. Replace heuristic option explanations with model-assisted explanations when a reliable answer and parsing context are available.
3. Add a richer screenshot or short demo video once the logged-in import flow is validated end to end.
4. Clean up unrelated frontend typecheck issues so full CI can verify this page without manual filtering.