General clean up related to permissions and updating fields.

src/lib/db_events.ts

@@ -1,6 +1,7 @@
 import Dexie, { type Table } from 'dexie';
 import type { list } from 'postcss';
 import type { key_val } from './ae_stores';
+import type { o } from 'vitest/dist/reporters-B7ebVMkT.js';
 
 // li = list
 // kv = key value list
@@ -488,7 +489,8 @@ export interface Presenter {
     event_presentation_name?: string;
     event_presentation_start_datetime?: null|Date;
 
-    person_external_id?: null|string;
+    person_external_id?: null|string; // This may be semi-random or unique only withing the account.
+    person_external_sys_id?: null|string; // Generated by an external system. Ideally this should be something like a UUID. It may be the same as the external_id if nothing given.
     person_given_name?: string;
     person_family_name?: null|string;
     person_full_name?: null|string;