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/boards/[boardId]/calendar/+page.server.ts

@@ -0,0 +1,35 @@
+import { error } from '@sveltejs/kit';
+import type { PageServerLoad } from './$types.js';
+import { withTenant } from '$lib/server/rls.js';
+import { requireBoardView } from '$lib/server/guards.js';
+import { canEditBoard } from '$lib/server/permissions.js';
+
+export const load: PageServerLoad = async ({ params, locals }) => {
+	const tenant = locals.tenant;
+	if (!tenant) throw error(400, 'Unknown tenant');
+
+	const board = await withTenant(tenant.id, async (tx) => {
+		return requireBoardView(tx, locals.user, params.boardId, tenant.id);
+	});
+
+	// Filter to cards with due dates
+	const cardsWithDue = board.columns.flatMap((col: any) =>
+		col.cards
+			.filter((c: any) => c.dueDate)
+			.map((c: any) => ({
+				...c,
+				columnTitle: col.title,
+				columnId: col.id
+			}))
+	);
+
+	return {
+		board: {
+			id: board.id,
+			title: board.title,
+			cardPrefix: (board as any).cardPrefix
+		},
+		cards: cardsWithDue,
+		canEdit: canEditBoard(locals.user, board.members)
+	};
+};