refactor(events, idaa): standardize on String-only IDs and remove '_random' suffix

Aligned the Events Badges, Templates, and IDAA Bulletin Board modules with
Aether UI/UX v3 standards by prioritizing semantic String IDs (e.g., event_id,
badge_id) over legacy '_random' variants in API helpers, Dexie processors,
and UI components.

- Refactored badge and template loaders to use clean ID field names.
- Updated search and LiveQuery logic in badge management views.
- Cleaned up unused imports and legacy code in +layout and +page components.
- Standardized ID mapping in generic object processors.
- Improved IDAA post creation UX with autofocus and empty title defaults.

src/routes/events/[event_id]/(badges)/templates/+page.svelte

@@ -94,7 +94,7 @@
         {#if $lq__badge_templates.length > 0}
             <div class="card p-4">
                 <ul class="list-group">
-                    {#each $lq__badge_templates as template (template.event_badge_template_id_random)}
+                    {#each $lq__badge_templates as template (template.event_badge_template_id)}
                         <li
                             class="list-group-item flex justify-between items-center"
                         >
@@ -105,7 +105,7 @@
                                     class="btn btn-sm variant-filled-primary"
                                     onclick={() =>
                                         edit_template(
-                                            template.event_badge_template_id_random
+                                            template.event_badge_template_id
                                         )}
                                 >
                                     <span class="fas fa-edit"></span> Edit
@@ -115,7 +115,7 @@
                                     class="btn btn-sm variant-filled-error ml-2"
                                     onclick={() =>
                                         delete_template(
-                                            template.event_badge_template_id_random
+                                            template.event_badge_template_id
                                         )}
                                 >
                                     <span class="fas fa-trash"></span> Delete