feat(tracker): Add Calcium display to Daily Totals

tests/calcium_display.spec.js

@@ -0,0 +1,15 @@
+const { test, expect } = require('@playwright/test');
+
+test('should display Calcium in Daily Totals section', async ({ page }) => {
+  // Navigate to tracker page
+  await page.goto('/tracker');
+
+  // Check for Daily Totals card
+  const dailyTotalsCard = page.locator('.card:has-text("Daily Totals")');
+  await expect(dailyTotalsCard).toBeVisible();
+
+  // Check for Calcium label and value using test-id
+  const calciumValue = page.getByTestId('daily-calcium-value');
+  await expect(calciumValue).toBeVisible();
+  await expect(calciumValue).toContainText(/^[0-9]+mg$/);
+});