Add dashboard, layout components, and CRM scaffolding

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/lib/utils.ts

@@ -0,0 +1,26 @@
+import { clsx, type ClassValue } from "clsx";
+import { twMerge } from "tailwind-merge";
+
+/**
+ * Merge Tailwind class names safely (handles conditional + conflicting classes).
+ */
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs));
+}
+
+/** Format a number as currency (default: USD). */
+export function formatCurrency(value: number, currency = "USD") {
+  return new Intl.NumberFormat("en-US", {
+    style: "currency",
+    currency,
+  }).format(value);
+}
+
+/** Format a date into a readable short form. */
+export function formatDate(date: Date | string) {
+  return new Intl.DateTimeFormat("en-US", {
+    day: "2-digit",
+    month: "short",
+    year: "numeric",
+  }).format(new Date(date));
+}