feat: render rich OneNote pages and resources

src/onenote/model/dto.ts

@@ -1,4 +1,5 @@
 import type { ParserDiagnostic } from './diagnostics.js';
+import type { OneNoteContentBlock } from '../one/content-model.js';
 
 export interface OneNotePageSummaryDto {
   id: string;
@@ -11,21 +12,28 @@ export interface OneNotePageSummaryDto {
   textPreview: string;
 }
 
-export type OneNoteContentBlockDto =
-  | { kind: 'text'; text: string }
-  | { kind: 'line-break' }
-  | { kind: 'link'; text: string; href?: string }
-  | {
-      kind: 'unsupported';
-      sourceKind: string;
-      description: string;
-    };
+/** Serializable, inert page content. Resource bytes remain in the worker. */
+export type OneNoteContentBlockDto = OneNoteContentBlock;
 
 export interface OneNotePageDto extends OneNotePageSummaryDto {
   blocks: OneNoteContentBlockDto[];
   diagnostics: ParserDiagnostic[];
 }
 
+export interface OneNoteResourceDto {
+  id: string;
+  kind: 'image' | 'attachment';
+  filename?: string;
+  extension?: string;
+  mediaType: string;
+  browserRenderable: boolean;
+  size: number;
+}
+
+export interface OneNoteResourcePayloadDto extends OneNoteResourceDto {
+  bytes: ArrayBuffer;
+}
+
 export interface OneNoteSectionDto {
   format: 'one';
   sourceName: string;