fix: reconcile branding tests + chat-display types (integration of wave agents)

apps/api/src/matrix-sso/chat-display.ts

@@ -134,7 +134,7 @@ export class ChatDisplayService {
            ON CONFLICT (workspace_id, key) DO UPDATE SET value = EXCLUDED.value, updated_at = now(), updated_by = EXCLUDED.updated_by`,
           [workspaceId, key, String(value), actor.userId],
         );
-        diff[key] = { from: (before as Record<string, unknown>)[key], to: value };
+        diff[key] = { from: (before as unknown as Record<string, unknown>)[key], to: value };
       }
       await client.query(
         "SELECT audit_append($1, $2, $3, $4, $5, $6, $7)",