Fix infinite hydration loop and stabilize global store synchronization

- Refactored layouts to derive account data from stable props instead of reactive stores.
- Wrapped store updates in untrack() with deep equality guards to prevent infinite re-renders.
- Resolved duplicate untrack declarations and missing imports across the project.
- Added fetch safeguards to Element_data_store to prevent redundant API calls.
- Standardized hydration patterns to break circular dependencies during initial load.

src/routes/journals/[journal_id]/+page.svelte

@@ -43,7 +43,7 @@
     import AeCompModalJournalImport from '../ae_comp__modal_journal_import.svelte';
 
     // Variables
-    let ae_acct = data[$slct.account_id];
+    let ae_acct = data[data.account_id];
     let show_export_modal = $state(false);
     let show_import_modal = $state(false);