Move repository content images to S3-backed media references

scripts/segment-layout-reference.ts

@@ -6,7 +6,8 @@ import {createHash} from 'node:crypto';
 import annotations from '../contentasset:annotations.json';
 import {textMergeTarget,unionBoxes} from '../contentasset:group-text';
 import ocr from '../contentasset:ocr-evidence.json';
-const root=path.resolve(import.meta.dirname,'..'),target=path.join(root,'contentasset:assets');
+const root=path.resolve(import.meta.dirname,'..'),target=path.resolve(process.env.MEDIA_AUTHORING_ROOT||'/tmp/prompt-media-authoring');
+if(target===root||target.startsWith(root+path.sep))throw Error('MEDIA_AUTHORING_ROOT must be outside repository');
 type Box=[number,number,number,number];
 type Element={id:string;kind:'text'|'image'|'decoration';role:string;box:Box;text:string|null;direction:string;reading:'verified'|'unreadable'|'not-text';asset:string;mask?:string;underlay?:string;pixels:number};
 function components(mask:Uint8Array,w:number,h:number){