feat: add builder package and ship animation/transition support

- @pagus-kit/builder: programmatic IR authoring API for agent-driven
  deck generation (createPresentation, createSlide, element factories)
- core: expose TransitionParser, AnimationParser, DrawingML inheritance
  resolver, and full preset geometry evaluator
- react: add useSlideTransition / useSlideAnimations hooks
- Bump all published packages to 0.0.1; update README package list,
  roadmap, and clone URL

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: tthallos

README.md

@@ -10,6 +10,8 @@ A modular PPTX web renderer that parses PowerPoint files and renders them in the
 - **Web font substitution** — maps Office fonts (Calibri, Microsoft YaHei, SimSun, etc.) to metrically compatible Google Fonts
 - **Embedded font extraction** — reads fonts embedded in `.pptx` files and renders them via `@font-face`
 - **React components** — drop-in `<PptxViewer>` with file upload, slide navigation, and font loading
+- **Slide transitions & entrance animations** — CSS-based playback for transitions and common DrawingML animation effects
+- **Deck authoring API** — `@pagus-kit/builder` assembles the IR programmatically (slides, shapes, text, fills) for agent-driven generation
 - **MCP Apps integration** — inline slide preview inside Claude Desktop / claude.ai via `@pagus-kit/mcp`
 - **Framework-agnostic core** — use `@pagus-kit/core` + `@pagus-kit/renderer` with any framework or headless in Node.js
 
@@ -19,6 +21,7 @@ A modular PPTX web renderer that parses PowerPoint files and renders them in the
 |---|---|---|
 | [`@pagus-kit/core`](./packages/core) | PPTX parser + intermediate representation (IR) | [![npm](https://img.shields.io/npm/v/@pagus-kit/core)](https://www.npmjs.com/package/@pagus-kit/core) |
 | [`@pagus-kit/renderer`](./packages/renderer) | Framework-agnostic SVG string renderer | [![npm](https://img.shields.io/npm/v/@pagus-kit/renderer)](https://www.npmjs.com/package/@pagus-kit/renderer) |
+| [`@pagus-kit/builder`](./packages/builder) | IR authoring API for constructing decks programmatically | [![npm](https://img.shields.io/npm/v/@pagus-kit/builder)](https://www.npmjs.com/package/@pagus-kit/builder) |
 | [`@pagus-kit/react`](./packages/react) | React components (`PptxViewer`, `SlideView`, hooks) | [![npm](https://img.shields.io/npm/v/@pagus-kit/react)](https://www.npmjs.com/package/@pagus-kit/react) |
 | [`@pagus-kit/mcp`](./packages/mcp) | MCP server for inline PPTX preview in AI clients | [![npm](https://img.shields.io/npm/v/@pagus-kit/mcp)](https://www.npmjs.com/package/@pagus-kit/mcp) |
 
@@ -153,7 +156,7 @@ Pagus uses a two-source strategy for web font fidelity:
 ## Development
 
 ```bash
-git clone https://github.com/tthallos/pagus.git
+git clone https://github.com/pagus-kit/pagus.git
 cd pagus
 npm install
 npm run build        # builds all packages in dependency order
@@ -167,6 +170,7 @@ pagus/
 ├── packages/
 │   ├── core/          # PPTX parser + IR types
 │   ├── renderer/      # SVG string renderer
+│   ├── builder/       # IR authoring API
 │   ├── react/         # React components + hooks
 │   └── mcp/           # MCP Apps server
 ├── playground/        # Development playground (Vite + React)
@@ -178,9 +182,10 @@ pagus/
 | Command | Description |
 |---|---|
 | `npm run dev` | Start the playground dev server |
-| `npm run build` | Build all packages (core → renderer → react → mcp → playground) |
+| `npm run build` | Build all packages (core → renderer → builder → react → mcp → playground) |
 | `npm run build:core` | Build `@pagus-kit/core` only |
 | `npm run build:renderer` | Build `@pagus-kit/renderer` only |
+| `npm run build:builder` | Build `@pagus-kit/builder` only |
 | `npm run build:react` | Build `@pagus-kit/react` only |
 | `npm test` | Run tests via Vitest |
 
@@ -234,14 +239,22 @@ Exposes a single MCP tool `render_slides` that converts a `.pptx` file path into
 
 ## Roadmap
 
+### Shipped
+
+- [x] Deck authoring API (`@pagus-kit/builder`) — programmatic IR construction for agent-driven generation
+- [x] Slide transitions and common entrance animations (CSS-based playback)
+
+### Planned
+
 - [ ] Remote HTTP MCP server with `StreamableHTTPServerTransport` for bypassing tool result size limits
 - [ ] Image optimization (EMF/WMF drop, raster downsampling, cross-slide deduplication)
 - [ ] Vue adapter (`@pagus-kit/vue`)
 - [ ] Full DrawingML property inheritance chain
 - [ ] More preset shape types
 - [ ] SmartArt support
-- [ ] Slide transitions and animations (CSS)
+- [ ] Expanded animation coverage (motion paths, emphasis / exit effects)
 - [ ] Slide notes and speaker view
+- [ ] PPTX export from the builder IR
 
 ## License