test: mock AnthropicClient in analyze tests to prevent live API calls

ui/src/lib/utils/formatting.ts

@@ -0,0 +1,26 @@
+/**
+ * Number and currency formatting utilities.
+ */
+
+/** Formats a P/E ratio — e.g. 22.5 → "22.5x", null → "—" */
+export function fmtPE(v: number | null | undefined): string {
+  return v != null ? v + 'x' : '—';
+}
+
+/** Full currency format — e.g. 1234.5 → "$1,234.50" */
+export function fmt(n: number | null | undefined): string {
+  return n != null
+    ? new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD' }).format(n)
+    : '—';
+}
+
+/** Compact currency format (no cents) — e.g. 1234.5 → "$1,235" */
+export function fmtShort(n: number | null | undefined): string {
+  return n != null
+    ? new Intl.NumberFormat('en-US', {
+        style: 'currency',
+        currency: 'USD',
+        maximumFractionDigits: 0,
+      }).format(n)
+    : '—';
+}