refactor(core): consolidate logic and modernize imports

- Unified Person and User logic into ae_core__* counterparts and marked legacy files.
- Renamed Activity Log to ae_core__activity_log.ts for naming consistency.
- Updated all core function imports across the identity, logs, and video conference modules.
- Fixed missing 'prefix' field in Person form payload and corrected return types in Activity Log.
- Updated project TODO to reflect completed core module refinements.

src/routes/idaa/(idaa)/video_conferences/+page.svelte

@@ -3,7 +3,10 @@
 	import { page } from '$app/stores';
 	import { ae_loc, ae_api } from '$lib/stores/ae_stores';
 	import MyClipboard from '$lib/app_components/e_app_clipboard.svelte';
-	import { create_ae_obj__activity_log, update_ae_obj__activity_log } from '$lib/ae_core/core__activity_log';
+  import {
+    create_ae_obj__activity_log,
+    update_ae_obj__activity_log
+  } from "$lib/ae_core/ae_core__activity_log";
 
 	let log_lvl: number = $state(0);