Phase 2

client/src/components/TierWarning.jsx

@@ -0,0 +1,35 @@
+import React from 'react';
+import { getTier, getNextTier } from './CpasBadge';
+
+/**
+ * Shows a warning banner if adding `addingPoints` to `currentPoints`
+ * would cross into a new CPAS tier.
+ */
+export default function TierWarning({ currentPoints, addingPoints }) {
+    if (!currentPoints && currentPoints !== 0) return null;
+
+    const current   = getTier(currentPoints);
+    const projected = getTier(currentPoints + addingPoints);
+
+    if (current.label === projected.label) return null;
+
+    const tierUp = getNextTier(currentPoints);
+
+    return (
+        <div style={{
+            background: '#fff3cd',
+            border: '2px solid #ffc107',
+            borderRadius: '6px',
+            padding: '12px 16px',
+            margin: '12px 0',
+            fontSize: '13px',
+        }}>
+            <strong>⚠ Tier Escalation Warning</strong><br />
+            Adding <strong>{addingPoints} point{addingPoints !== 1 ? 's' : ''}</strong> will move this employee
+            from <strong>{current.label}</strong> to <strong>{projected.label}</strong>.
+            {tierUp && (
+                <span> Tier threshold crossed at <strong>{tierUp.min} points</strong>.</span>
+            )}
+        </div>
+    );
+}