fix(core): resolve 68 compiler errors and stabilize Svelte 5 reactivity

- Fixed 'Captured initial value' warnings in 65+ components by implementing
  proper sync effects with 'untrack' and derived states.
- Hardened Event Settings JSON editors using a temporary string-buffer pattern
  to safely decouple object-based data from CodeMirror's string requirements.
- Resolved strict TypeScript mismatches across core routes (Accounts, Sites, etc.)
  and improved property indexing safety in views.
- Patched Flowbite-Svelte Drawer transitions for Svelte 5 compatibility using
  prop spreading.
- Added comprehensive safety comments to high-risk reactivity blocks.
- Synchronized 'ae_types.ts' with V3 backend models.

src/lib/elements/element_manage_hosted_file_li_all.svelte

@@ -79,7 +79,7 @@
                     .equals(dq__where_eq_val)
                     // .and((x) => (x.extension == extension))
                     // .and((x) => (x.content_type == `video/${extension}`))
-                    .and((x) => x.content_type.startsWith('video/'))
+                    .and((x) => x.content_type?.startsWith('video/') === true)
                     // .reverse()
                     .sortBy('created_on');
                 // .toArray()
@@ -88,21 +88,21 @@
                 results = await db_core.file
                     .where(dq__where_val)
                     .equals(dq__where_eq_val)
-                    .and((x) => x.content_type.startsWith('audio/'))
+                    .and((x) => x.content_type?.startsWith('audio/') === true)
                     .sortBy('created_on');
             } else if (file_type == 'image') {
                 // Handle image/jpeg, image/png, image/gif. If the content type is prefixed with "image/", then it is an image file.
                 results = await db_core.file
                     .where(dq__where_val)
                     .equals(dq__where_eq_val)
-                    .and((x) => x.content_type.startsWith('image/'))
+                    .and((x) => x.content_type?.startsWith('image/') === true)
                     .sortBy('created_on');
             } else if (file_type == 'document') {
                 // Handle application/pdf, application/msword, application/vnd.openxmlformats-officedocument.wordprocessingml.document, application/vnd.ms-excel, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-powerpoint, application/vnd.openxmlformats-officedocument.presentationml.presentation. If the content type is prefixed with "application/", then it is a document file.
                 results = await db_core.file
                     .where(dq__where_val)
                     .equals(dq__where_eq_val)
-                    .and((x) => x.content_type.startsWith('application/'))
+                    .and((x) => x.content_type?.startsWith('application/') === true)
                     .sortBy('created_on');
             } else {
                 results = await db_core.file