feat: implement question bank and exam modules with associated services, controllers, and entities

feat: implement question bank and exam modules with associated services, controllers, and entities

feat(backend): add student payment APIs and stabilize transcript/assignment responses.

Add MySQL exporter for dev quick login seed data.

feat(progress): track student material views and persist course completion updates.

Issue #15 #17 #24 #26 Fixed

feat(attendance): face references, AI section flow, and nullable photo file

Merge pull request #10 from tarekdx34/ai-features/quiz-generation

fix(ai-attendance): JSON-safe API response, install script, fetch roster helper

feat(quiz-generator): env loading, npm scripts, sample text

feat(ai): move attendance and quiz under ai-services, Windows install script, npm run attendance/dev

Merge remote main with local drive integration changes

feat(drive-integration): refactor Google Drive integration with folder service and DB schema improvements

chore(scripts): add DB helper to inspect lab_submissions schema

before testing endpoints

before testing endpoints