feat: QA fixes, new APIs (assignments, rubrics, custom exams), Generation page enhancements

- Fix ELAI video generation (correct render endpoint, script splitting for 60s limit)
- Fix speaking script generation error handling and empty response display
- Add custom exam list API (GET /api/exam/custom/list)
- Add assignments REST API (list, create, get)
- Add rubrics REST API (list, create)
- Enhance Generation page: dynamic exam structures, auto-module selection, preview dialog, audio player
- Improve submit feedback with exam ID and status in toast notifications
- Fix ExamsListPage to show both custom exams and exam sessions
- Connect RubricsPage to backend API with fallback data
- Add Dockerfile, docker-compose.yml, requirements.txt for deployment
- Fix placement, grading, scoring, and auth controllers
- Add ErrorBoundary component for frontend resilience
- Add QA report and credentials documentation

Made-with: Cursor

custom_addons/encoach_branding/__manifest__.py

@@ -4,7 +4,7 @@
     'category': 'Education',
     'summary': 'Whitelabeling and custom branding per entity',
     'author': 'EnCoach',
-    'depends': ['encoach_core'],
+    'depends': ['encoach_core', 'encoach_api'],
     'data': [
         'security/ir.model.access.csv',
         'views/branding_views.xml',