Add soft delete for components (disabled flag)

- disabled boolean on components table (default false)
- Component list filters out disabled components
- Component detail returns 404 for disabled
- Delete button with confirmation on component detail page
- Installation form filters out instances of disabled components

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

src/routes/(app)/components/+page.server.ts

@@ -9,7 +9,7 @@ export const load: PageServerLoad = async ({ url }) => {
 	const page = Math.max(1, Number(url.searchParams.get('page') ?? 1));
 	const pageSize = 24;
 
-	const conditions = [];
+	const conditions = [eq(components.disabled, false)];
 	if (type) conditions.push(eq(components.componentType, type));
 	if (search) {
 		conditions.push(

src/routes/(app)/components/[id]/+page.server.ts

@@ -2,7 +2,7 @@ import type { PageServerLoad, Actions } from './$types';
 import { db } from '$lib/server/db/index.js';
 import { components, componentInstances, devices, locations, installationLog, componentImages, componentDocuments } from '$lib/server/db/schema.js';
 import { eq, desc } from 'drizzle-orm';
-import { error, fail } from '@sveltejs/kit';
+import { error, fail, redirect } from '@sveltejs/kit';
 import { saveDocument, deleteFile } from '$lib/server/uploads.js';
 
 export const load: PageServerLoad = async ({ params }) => {
@@ -12,6 +12,7 @@ export const load: PageServerLoad = async ({ params }) => {
 		.where(eq(components.id, params.id));
 
 	if (!component) error(404, 'Component not found');
+	if (component.disabled) error(404, 'Component not found');
 
 	// All instances with their device/location info
 	const instances = await db
@@ -161,5 +162,14 @@ export const actions: Actions = {
 		}
 
 		return { documentDeleted: true };
+	},
+
+	disable: async ({ params }) => {
+		await db
+			.update(components)
+			.set({ disabled: true, updatedAt: new Date() })
+			.where(eq(components.id, params.id));
+
+		redirect(303, '/components');
 	}
 };

src/routes/(app)/components/[id]/+page.svelte

@@ -9,6 +9,7 @@
 	let editingInstanceId = $state<string | null>(null);
 	let showAddInstances = $state(false);
 	let showDocForm = $state(false);
+	let showDeleteConfirm = $state(false);
 
 	const totalCount = $derived(data.instances.length);
 	const installedCount = $derived(data.instances.filter((i) => i.currentDeviceId).length);
@@ -56,9 +57,28 @@
 				class="rounded-md border border-gray-300 px-3 py-1.5 text-sm text-gray-600 hover:bg-gray-100 dark:border-gray-600 dark:text-gray-400 dark:hover:bg-gray-700">
 				Print
 			</button>
+			<button type="button" onclick={() => (showDeleteConfirm = !showDeleteConfirm)}
+				class="rounded-md border border-red-300 px-3 py-1.5 text-sm text-red-600 hover:bg-red-50 dark:border-red-700 dark:text-red-400 dark:hover:bg-red-900/20">
+				Delete
+			</button>
 		</div>
 	</div>
 
+	{#if showDeleteConfirm}
+		<div class="mb-6 rounded-lg border border-red-200 bg-red-50 p-5 dark:border-red-800 dark:bg-red-900/20">
+			<p class="mb-3 text-sm text-red-700 dark:text-red-300">Are you sure you want to delete <strong>{c.title}</strong>? This will hide it from all listings.</p>
+			<div class="flex gap-2">
+				<form method="POST" action="?/disable" use:enhance>
+					<button type="submit" class="rounded-md bg-red-600 px-4 py-2 text-sm font-medium text-white hover:bg-red-700">Yes, delete</button>
+				</form>
+				<button type="button" onclick={() => (showDeleteConfirm = false)}
+					class="rounded-md px-3 py-2 text-sm text-gray-600 hover:bg-gray-100 dark:text-gray-400 dark:hover:bg-gray-700">
+					Cancel
+				</button>
+			</div>
+		</div>
+	{/if}
+
 	{#if form?.error}
 		<div class="mb-4 rounded-md bg-red-50 p-3 text-sm text-red-700 dark:bg-red-900/30 dark:text-red-300">{form.error}</div>
 	{/if}

src/routes/(app)/installations/new/+page.server.ts

@@ -35,6 +35,7 @@ export const load: PageServerLoad = async ({ url }) => {
 		})
 		.from(componentInstances)
 		.innerJoin(components, eq(componentInstances.componentId, components.id))
+		.where(eq(components.disabled, false))
 		.orderBy(components.title, componentInstances.instanceNumber);
 
 	const locationList = await db