Phase 7: Search, filters, templates, and archive UI

Add full-text card search (PostgreSQL tsvector + GIN index) with navbar
SearchBar, client-side board filters (label/assignee/due date), board
templates (3 system templates + save-as-template API), and archive
toggle for both board listing and board view.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/routes/boards/+page.server.ts

@@ -1,12 +1,18 @@
 import type { PageServerLoad } from './$types.js';
 import { withTenant } from '$lib/server/rls.js';
+import { prisma } from '$lib/server/db.js';
 
-export const load: PageServerLoad = async ({ locals }) => {
+export const load: PageServerLoad = async ({ locals, url }) => {
 	const tenant = locals.tenant;
-	if (!tenant) return { boards: [], categories: [] };
+	if (!tenant) return { boards: [], categories: [], templates: [] };
+
+	const showArchived = url.searchParams.get('archived') === 'true';
 
 	const result = await withTenant(tenant.id, async (tx) => {
-		const where: any = { tenantId: tenant.id, archived: false };
+		const where: any = { tenantId: tenant.id };
+		if (!showArchived) {
+			where.archived = false;
+		}
 
 		if (!locals.user) {
 			where.visibility = 'PUBLIC';
@@ -40,5 +46,23 @@ export const load: PageServerLoad = async ({ locals }) => {
 		return { boards, categories };
 	});
 
-	return result;
+	// Fetch templates (system + tenant) — only if logged in
+	let templates: any[] = [];
+	if (locals.user) {
+		const [systemTemplates, tenantTemplates] = await Promise.all([
+			prisma.boardTemplate.findMany({
+				where: { tenantId: null },
+				orderBy: { name: 'asc' }
+			}),
+			withTenant(tenant.id, async (tx) => {
+				return tx.boardTemplate.findMany({
+					where: { tenantId: tenant.id },
+					orderBy: { name: 'asc' }
+				});
+			})
+		]);
+		templates = [...systemTemplates, ...tenantTemplates];
+	}
+
+	return { ...result, templates };
 };