Add 17 features: My Work view, card copy/numbering, calendar, bulk ops, custom fields, automations, webhooks, invites, import/export, and more

Features implemented across 6 batches:
- Batch A: Fix ColorPicker gradient sync, tenant custom logo, unarchive cards, board backgrounds
- Batch B: My Work view, card copy/duplicate, card numbering (BOARD-123)
- Batch C: Due date reminders (cron), card watching with notifications
- Batch D: Bulk card operations, column sorting, calendar view
- Batch E: Invite by link, board import/export (Pounce + Trello JSON)
- Batch F: Webhooks with HMAC signing, custom fields, automation rules engine

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

src/routes/invite/[code]/+page.server.ts

@@ -0,0 +1,32 @@
+import { error } from '@sveltejs/kit';
+import type { PageServerLoad } from './$types.js';
+import { prisma } from '$lib/server/db.js';
+
+export const load: PageServerLoad = async ({ params, locals }) => {
+	const invite = await prisma.tenantInvite.findUnique({
+		where: { code: params.code },
+		include: {
+			tenant: { select: { name: true } }
+		}
+	});
+
+	if (!invite) throw error(404, 'Invite not found');
+
+	if (invite.expiresAt < new Date()) {
+		throw error(410, 'This invite has expired');
+	}
+
+	if (invite.maxUses !== null && invite.usedCount >= invite.maxUses) {
+		throw error(410, 'This invite has reached its maximum number of uses');
+	}
+
+	return {
+		invite: {
+			code: invite.code,
+			role: invite.role,
+			tenantName: invite.tenant.name,
+			expiresAt: invite.expiresAt.toISOString()
+		},
+		user: locals.user
+	};
+};