refactor(ui): standardize boolean inputs on ToggleSwitch

Replace raw <input type="checkbox"> with the ToggleSwitch component on
sites/[id] (encrypt-secret), sites/new (render-markdown, enable-storage),
and stacks/new (deploy-immediately). Document the convention in CLAUDE.md
so future forms keep the same control instead of mixing styles.

web/src/routes/sites/[id]/+page.svelte

@@ -8,6 +8,7 @@
 	import FormField from '$lib/components/FormField.svelte';
 	import ConfirmDialog from '$lib/components/ConfirmDialog.svelte';
 	import ForgeHero from '$lib/components/ForgeHero.svelte';
+	import ToggleSwitch from '$lib/components/ToggleSwitch.svelte';
 	import WebhookPanel from '$lib/components/WebhookPanel.svelte';
 	import ContainerStats from '$lib/components/ContainerStats.svelte';
 	import ContainerLogs from '$lib/components/ContainerLogs.svelte';
@@ -304,10 +305,10 @@
 					<div class="mb-4 space-y-3 rounded-lg bg-[var(--surface-card-hover)] p-4">
 						<FormField label={$t('sites.secretKey')} name="secretKey" bind:value={secretKey} placeholder="API_KEY" required />
 						<FormField label={$t('sites.secretValue')} name="secretValue" bind:value={secretValue} placeholder="sk-..." />
-						<label class="flex items-center gap-2 text-sm text-[var(--text-secondary)]">
-							<input type="checkbox" bind:checked={secretEncrypted} class="rounded border-[var(--border-input)]" />
-							{$t('sites.encryptSecret')}
-						</label>
+						<div class="flex items-center gap-2 text-sm text-[var(--text-secondary)]">
+							<ToggleSwitch bind:checked={secretEncrypted} label={$t('sites.encryptSecret')} />
+							<span>{$t('sites.encryptSecret')}</span>
+						</div>
 						<button
 							type="button"
 							disabled={!secretKey.trim() || secretSubmitting}

web/src/routes/sites/new/+page.svelte

@@ -5,6 +5,7 @@
 	import { goto } from '$app/navigation';
 	import FormField from '$lib/components/FormField.svelte';
 	import ForgeHero from '$lib/components/ForgeHero.svelte';
+	import ToggleSwitch from '$lib/components/ToggleSwitch.svelte';
 	import { IconCheck, IconLoader, IconChevronRight, IconSearch } from '$lib/components/icons';
 	import EntityPicker from '$lib/components/EntityPicker.svelte';
 	import type { EntityPickerItem } from '$lib/types';
@@ -590,17 +591,17 @@
 				{/if}
 
 				<!-- Options -->
-				<label class="flex items-center gap-2 text-sm text-[var(--text-secondary)]">
-					<input type="checkbox" bind:checked={renderMarkdown} class="rounded border-[var(--border-input)]" />
-					{$t('sites.renderMarkdown')}
-				</label>
+				<div class="flex items-center gap-2 text-sm text-[var(--text-secondary)]">
+					<ToggleSwitch bind:checked={renderMarkdown} label={$t('sites.renderMarkdown')} />
+					<span>{$t('sites.renderMarkdown')}</span>
+				</div>
 
 				<!-- Persistent Storage (Deno only) -->
 				{#if mode === 'deno'}
-					<label class="flex items-center gap-2 text-sm text-[var(--text-secondary)]">
-						<input type="checkbox" bind:checked={storageEnabled} class="rounded border-[var(--border-input)]" />
-						{$t('sites.enableStorage')}
-					</label>
+					<div class="flex items-center gap-2 text-sm text-[var(--text-secondary)]">
+						<ToggleSwitch bind:checked={storageEnabled} label={$t('sites.enableStorage')} />
+						<span>{$t('sites.enableStorage')}</span>
+					</div>
 					{#if storageEnabled}
 						<div class="space-y-3 rounded-lg border border-[var(--border-secondary)] p-4">
 							<p class="text-xs text-[var(--text-tertiary)]">{$t('sites.storageHelp')}</p>

web/src/routes/stacks/new/+page.svelte

@@ -2,6 +2,7 @@
 	import { goto } from '$app/navigation';
 	import * as api from '$lib/api';
 	import { IconArrowLeft } from '$lib/components/icons';
+	import ToggleSwitch from '$lib/components/ToggleSwitch.svelte';
 	import { t } from '$lib/i18n';
 
 	let name = $state('');
@@ -192,14 +193,13 @@
 			</div>
 		</div>
 
-		<label class="deploy-toggle">
-			<input type="checkbox" bind:checked={deployNow} />
-			<span class="toggle-box"></span>
+		<div class="deploy-toggle">
+			<ToggleSwitch bind:checked={deployNow} label={$t('stacks.new.deployImmediate')} />
 			<span class="toggle-text">
 				<strong>{$t('stacks.new.deployImmediate')}</strong>
 				<span class="dim">{$t('stacks.new.deployHint')}</span>
 			</span>
-		</label>
+		</div>
 
 		<div class="actions">
 			<a href="/stacks" class="btn-ghost">{$t('stacks.new.cancel')}</a>
@@ -538,33 +538,10 @@
 		border: 1px solid var(--border-primary);
 		border-radius: var(--radius-lg);
 		margin-bottom: 1.25rem;
-		cursor: pointer;
 		transition: border-color 150ms ease;
 	}
 	.deploy-toggle:hover { border-color: var(--color-brand-300); }
-	.deploy-toggle input { position: absolute; opacity: 0; pointer-events: none; }
-	.toggle-box {
-		flex-shrink: 0;
-		width: 20px; height: 20px;
-		border: 1px solid var(--border-input);
-		border-radius: var(--radius-sm);
-		background: var(--surface-input);
-		position: relative;
-		margin-top: 2px;
-	}
-	.deploy-toggle input:checked + .toggle-box {
-		background: var(--accent);
-		border-color: var(--accent);
-	}
-	.deploy-toggle input:checked + .toggle-box::after {
-		content: '';
-		position: absolute;
-		left: 6px; top: 2px;
-		width: 5px; height: 10px;
-		border: solid #fff;
-		border-width: 0 2px 2px 0;
-		transform: rotate(45deg);
-	}
+	.deploy-toggle :global(.toggle-switch) { margin-top: 2px; }
 	.toggle-text strong {
 		display: block; font-family: var(--serif);
 		font-size: 1.15rem; font-weight: 400; line-height: 1.2;