# UnifiedSlide alpha24 Editor Foundation Status

## Purpose

alpha24 adds the next layer of the product architecture without disturbing the stable alpha23 visual layout.  The focus is not cosmetic UI change, but the foundation required for Google Slides-level editing behavior.

## Added modules

### scripts/models/selection_manager.js

Normalizes Fabric.js active object / activeSelection into a serializable selection state.  This is the bridge from Canvas internals to Host-visible `selectionChanged` events and future PropertyPanel binding.

### scripts/models/slide_store.js

Introduces a View-independent slide ordering and active-slide model.  This is the base for thumbnail D&D, duplicate slide, delete slide, slide search, and section support.

### scripts/services/layer_manager.js

Introduces a Fabric-independent API surface for layer operations:

- list layers
- rename
- show / hide
- lock / unlock
- bring forward
- send backward

### scripts/services/ooxml/

Adds the first OOXML Core writer modules:

- PresentationWriter
- SlideWriter
- RelationshipWriter
- ThemeWriter

These files are the first step toward reducing PPTX generation dependency on third-party abstractions and aligning Import / Export through shared OOXML concepts.

## Current implementation status

| Area | Status |
| --- | --- |
| Stable layout | Kept from alpha23 |
| Demo policy | Kept from alpha23 |
| i18n | Kept from alpha23 |
| SelectionManager | Added and exported |
| SlideStore | Added and exported |
| LayerManager | Added and exported |
| OOXML Core writer modules | Added and exported |
| Full UI wiring | Next milestone |

## Next milestone

The next milestone should wire these modules into the visible UI:

1. bind Canvas selection events to SelectionManager
2. bind LayerPanel to LayerManager
3. bind Slide thumbnails to SlideStore
4. route new toolbar/menu/context-menu actions through CommandRegistry
5. expand regression-tests.html for these commands