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/core/people/[person_id]/+page.svelte

@@ -44,7 +44,7 @@
 
     // Variables
     $slct.account_id = data.account_id;
-    let ae_acct = data[$slct.account_id];
+    let ae_acct = data[data.account_id];
 
     $ae_loc.url_origin = data.url.origin;