fix: add missing each-block keys (svelte/require-each-key)

Fixed all 27 remaining instances across 19 files. Keys used:
- Object ID fields where available (e.g. account_id_random, event_file_id)
- index for logger lists with no reliable unique key
- Property name for Object.entries() loops

src/lib/elements/element_manage_hosted_file_li.svelte

@@ -127,7 +127,7 @@
             <ol class="list-decimal list-inside">
                 {#each [...$lq__hosted_file_obj_li]
                     .reverse()
-                    .slice(0, max_file_count) as hosted_file_obj}
+                    .slice(0, max_file_count) as hosted_file_obj (hosted_file_obj.hosted_file_id)}
                     <li>
                         <button
                             type="button"