fix(mana/web+packages): clear all 270 warnings to zero

Comprehensive warning sweep across 128 files that brings svelte-check
from 270 warnings → 0 (plus 3 new errors from concurrent upstream
changes fixed inline).

Final state: 6473 files, 0 errors, 0 warnings, 0 files with problems.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/shared-ui/src/dnd/ActionZone.svelte

@@ -44,6 +44,7 @@
 </script>
 
 {#if visible}
+	{@const Icon = iconComponent}
 	<div
 		class="action-zone variant-{variant}"
 		use:dropTarget={{
@@ -60,7 +61,7 @@
 		role="button"
 		tabindex="-1"
 	>
-		<svelte:component this={iconComponent} size={20} weight="bold" />
+		<Icon size={20} weight="bold" />
 		{#if label}
 			<span class="action-label">{label}</span>
 		{/if}