fix: resolve all linter errors and a11y warnings

- Fix TS errors: editMode property order, implicit any, string|undefined
- Add $state() to bind:this element refs (IconGrid, EntityPicker, etc.)
- Fix a11y: labels, aria-labels, roles, tabindex on dialogs
- Remove unused imports (tick, svelte-i18n)
- Make AutocompleteInput/TagsInput accept optional string values

src/lib/components/widget/AppWidget.svelte

@@ -196,6 +196,7 @@
 	{/if}
 {:else if cardSize === 'large'}
 	<!-- Large: icon + name + description + sparkline + tags + links -->
+	<!-- svelte-ignore a11y_no_static_element_interactions -->
 	<div
 		class="card-hover group rounded-xl {cardStyleClass} p-5 transition-colors hover:border-primary/50"
 		data-app-widget
@@ -291,6 +292,7 @@
 	</div>
 {:else}
 	<!-- Medium (default): icon + name + status + sparkline on hover + links -->
+	<!-- svelte-ignore a11y_no_static_element_interactions -->
 	<div
 		class="card-hover group rounded-xl {cardStyleClass} p-4 transition-colors hover:border-primary/50"
 		data-app-widget