# Data Model: SvelteKit Integration

## Entities

### Route
Represents a navigable URL in the application.

| Field | Type | Description |
|-------|------|-------------|
| `path` | String | The URL path (e.g., `/`, `/settings`) |
| `component` | Svelte Component | The page component to render |
| `data_requirements` | List<API Endpoint> | Backend data needed for this route |
| `layout` | Layout | The layout wrapping this route |

**Validation Rules**:
- `path` must be unique.
- `path` must follow SvelteKit file-based routing conventions.

### Layout
Represents a shared UI structure.

| Field | Type | Description |
|-------|------|-------------|
| `name` | String | Identifier for the layout (e.g., `default`) |
| `components` | List<Svelte Component> | Shared components (Header, Footer, Sidebar) |
| `slot` | Placeholder | Where the route content is injected |

## State Transitions

### Navigation
1.  **Trigger**: User clicks link or `goto(path)` is called.
2.  **Action**: SvelteKit router intercepts the request.
3.  **Data Fetching**: `load` function in `+page.ts` or `+layout.ts` is executed.
4.  **Rendering**: The new page component is rendered within the layout.
5.  **URL Update**: Browser history is updated.

### Error Handling
1.  **Trigger**: Navigation to non-existent path or API failure.
2.  **Action**: SvelteKit renders `+error.svelte`.
3.  **Display**: User-friendly error message with recovery options.