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-auth-ui/src/components/AuthGateModal.svelte

@@ -135,7 +135,7 @@
 	});
 
 	// Icon for action type
-	const actionIcon = $derived.by(() => {
+	const ActionIcon = $derived.by(() => {
 		switch (action) {
 			case 'save':
 				return CloudArrowUp;
@@ -212,6 +212,7 @@
 		role="presentation"
 		tabindex="-1"
 	>
+		<!-- svelte-ignore a11y_click_events_have_key_events -->
 		<div
 			class="bg-card border-border relative mx-4 w-full max-w-md rounded-xl border p-6 shadow-2xl"
 			role="dialog"
@@ -235,7 +236,7 @@
 			<div
 				class="bg-primary/10 mx-auto mb-4 flex h-16 w-16 items-center justify-center rounded-full"
 			>
-				<svelte:component this={actionIcon} size={32} class="text-primary" />
+				<ActionIcon size={32} class="text-primary" />
 			</div>
 
 			<!-- Title -->

packages/shared-auth-ui/src/pages/LoginPage.svelte

@@ -179,7 +179,9 @@
 	let loading = $state(false);
 	let error = $state<string | null>(null);
 	let errorField = $state<'email' | 'password' | 'general' | null>(null);
+	// svelte-ignore state_referenced_locally
 	let email = $state(initialEmail);
+	// svelte-ignore state_referenced_locally
 	let password = $state(initialPassword);
 	let showPassword = $state(false);
 	let showSuccess = $state(false);
@@ -187,6 +189,7 @@
 	let emailInput = $state<HTMLInputElement | undefined>(undefined);
 	let passwordInput = $state<HTMLInputElement | undefined>(undefined);
 	let successAnnouncement = $state('');
+	// svelte-ignore state_referenced_locally
 	let showVerifiedBanner = $state(verified);
 	let showEmailNotVerified = $state(false);
 	let resendingVerification = $state(false);