- Multi-Pin references: toggle buttons A/B/C/D to pin up to 4 images
- Node Parameters sidebar: view/edit workflow node widgets inside MFV
- Run button in viewer toolbar for immediate re-queue
- Expandable text areas for long prompts
- Sidebar position setting (right/left/bottom) via Settings
- Toolbar layout: Run and Node Parameters pushed to far right
- Message Center: 2 new announcements for the features
- Docs: VIEWER_FEATURE_TUTORIAL, FLOATING_VIEWER_WORKFLOW_SIDEBAR
- CHANGELOG v2.4.5, README aligned