implement mandatory CW for notes (resolves #910)

packages/backend/src/models/Note.ts

@@ -228,6 +228,15 @@ export class MiNote {
 	})
 	public processErrors: string[] | null;
 
+	/**
+	 * Specifies a Content Warning that should be forcibly attached to this note.
+	 * Does not replace the user's own CW.
+	 */
+	@Column('text', {
+		nullable: true,
+	})
+	public mandatoryCW: string | null;
+
 	//#region Denormalized fields
 	@Column('varchar', {
 		length: 128, nullable: true,

packages/backend/src/models/json-schema/note.ts

@@ -41,6 +41,10 @@ export const packedNoteSchema = {
 			type: 'string',
 			optional: true, nullable: true,
 		},
+		mandatoryCW: {
+			type: 'string',
+			optional: true, nullable: true,
+		},
 		userId: {
 			type: 'string',
 			optional: false, nullable: false,