feat(lesson-preparation): add AI evaluation, analytics, attachments, calendar, comments, review, substitutes, formative, and version diff
- Add actions-ai-evaluation, actions-analytics, actions-attachments, actions-calendar, actions-comments, actions-formative, actions-questions, actions-review, actions-substitutes
- Add corresponding data-access layers for each new action module
- Add calendar-view, curriculum-map-view, version-diff-viewer components
- Add editor-slice, selection-slice, version-slice hooks for state management
- Add document-diff and scope-check lib utilities
- Add default-question-service and external-questions-bridge services
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