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e4cfb8befe
# Description of Changes
- Introduced **Duplicate Page** action in the MultiTool UI:
- New `DuplicatePageCommand` with full undo/redo support
- Button added next to Delete, with tooltip text wired via i18n
(`multiTool.duplicate`)
- `PdfContainer.duplicatePage()` clones page image, rotation, and
adapter state; inserts after source; refreshes numbering
- Hooked duplication into the actions pipeline:
- `PdfActionsManager` now receives `duplicatePage` via `setActions(...)`
- Added `duplicatePageButtonCallback` and control markup creation
- Refactored command architecture for robust undo/redo:
- Added `CommandWithAnchors` for capturing positions and deterministic
reinsertion (used by add/duplicate/page-break)
- Modernized `AddFilesCommand`, `PageBreakCommand` to use anchors, avoid
DOM state on nodes, and handle arrays consistently
- Improved `RemoveSelectedCommand`, `DeletePageCommand`,
`MovePageCommand`, `Rotate*` and `Split*` commands:
- Safer null checks for filename/export controls
- Clearer semantics and documentation
- Consistent redo mirroring execute
- Minor UI/UX fix:
- Corrected tooltip wiring for the **Add File** button
(`insertFileButton.setAttribute('title', ...)`)
- Internationalization:
- Added `multiTool.duplicate=Duplicate` to `messages_en_GB.properties`
- Exposed `translations.duplicate` in `multi-tool.html`
**Why:** Adds a commonly requested workflow improvement (duplicate a
single page quickly) and makes the command stack more resilient
(especially redo after complex DOM mutations), improving reliability and
maintainability.
before:
<img width="186" height="34" alt="image"
src="https://github.com/user-attachments/assets/7edc8e9e-fc3d-411e-aaa1-4da7099c3173"
/>
after:
<img width="225" height="34" alt="image"
src="https://github.com/user-attachments/assets/bdf228c9-b3db-4690-bfb9-f198225459f4"
/>
Closes #4322
---
## Checklist
### General
- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] My changes generate no new warnings
### Documentation
- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### UI Changes (if applicable)
- [x] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
### Testing (if applicable)
- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
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| allowed-licenses.json | ||