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>

prisma/seed.ts

@@ -36,6 +36,59 @@ async function main() {
 		}
 	});
 
+	// Seed system templates (tenantId: null)
+	const systemTemplates = [
+		{
+			name: 'Basic Kanban',
+			description: 'Simple three-column workflow',
+			template: { columns: [{ title: 'To Do' }, { title: 'In Progress' }, { title: 'Done' }] }
+		},
+		{
+			name: 'Scrum Sprint',
+			description: 'Sprint-based agile workflow',
+			template: {
+				columns: [
+					{ title: 'Backlog' },
+					{ title: 'Sprint' },
+					{ title: 'In Review' },
+					{ title: 'Done' }
+				]
+			}
+		},
+		{
+			name: 'Bug Tracker',
+			description: 'Issue lifecycle tracking',
+			template: {
+				columns: [
+					{ title: 'New' },
+					{ title: 'Confirmed' },
+					{ title: 'In Progress' },
+					{ title: 'Resolved' },
+					{ title: 'Closed' }
+				]
+			}
+		}
+	];
+
+	for (const tpl of systemTemplates) {
+		const existing = await prisma.boardTemplate.findFirst({
+			where: { tenantId: null, name: tpl.name }
+		});
+		if (!existing) {
+			await prisma.boardTemplate.create({
+				data: {
+					tenantId: null,
+					name: tpl.name,
+					description: tpl.description,
+					template: tpl.template
+				}
+			});
+			console.log(`  Created system template: ${tpl.name}`);
+		} else {
+			console.log(`  System template exists: ${tpl.name}`);
+		}
+	}
+
 	console.log('Seed complete.');
 	console.log('  Admin: admin@example.com / admin123');
 }