fix(files): expose expiry and disable expired downloads

- return expiresAt and createdAt for scenario and run file metadata\n- keep download actions visible while preventing expired file access

server/src/file/file-storage.service.ts

@@ -19,6 +19,8 @@ export interface FileMetadata {
   mimeType: string;
   size: number;
   sha256: string;
+  expiresAt: Date | null;
+  createdAt: Date;
   path: string;
 }
 
@@ -271,6 +273,8 @@ export class FileStorageService implements OnModuleInit {
       mimeType: file.mimeType,
       size: file.size,
       sha256: file.sha256,
+      expiresAt: file.expiresAt,
+      createdAt: file.createdAt,
       path: this.getAbsolutePath(file.filePath),
     };
   }

server/src/scenario/scenario.service.ts

@@ -732,6 +732,9 @@ export class ScenarioService {
         name: item.name,
         mimeType: item.mimeType,
         size: item.size,
+        sha256: item.sha256,
+        expiresAt: item.expiresAt,
+        createdAt: item.createdAt,
       })),
       total: result.total,
     };
@@ -790,6 +793,9 @@ export class ScenarioService {
         name: item.name,
         mimeType: item.mimeType,
         size: item.size,
+        sha256: item.sha256,
+        expiresAt: item.expiresAt,
+        createdAt: item.createdAt,
       })),
       total: result.total,
     };