- Added TestAuthorCanSubmitOwnDocument class with 3 tests
- test_author_can_submit_own_document_without_model_permission: verifies authors can submit their own documents via is_document_uploader predicate
- test_regular_user_cannot_submit_others_document: ensures users cannot submit others' documents
- test_author_can_edit_own_draft_document: confirms authors can edit their drafts
Benefits:
- Validates django-rules integration (is_document_uploader predicate)
- Ensures proper separation: authors manage own documents, not others'
- No model permissions required for basic author operations
All 91 tests passing ✅
ad2e5ab76d