test(econify): add test for period-total count blocking in batch processing

- Tests Tourist Arrivals scenario (count + period-total)
- Verifies value is only magnitude-scaled, not time-divided
- Confirms explain metadata shows adjusted=false
- All 460 tests passing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: algoflows

packages/econify/src/batch/temporal_aggregation_test.ts

@@ -57,6 +57,45 @@ Deno.test("Batch: period-total allows time conversion", async () => {
   assertEquals(item.normalizedUnit, "USD millions per year");
 });
 
+Deno.test("Batch: period-total BLOCKS time conversion for discrete types (count)", async () => {
+  // Tourist Arrivals scenario: count + period-total should NOT be time-converted
+  const items: BatchItem[] = [
+    {
+      id: "TOURIST_ARRIVALS",
+      name: "Tourist Arrivals",
+      value: 520394,
+      unit: "Thousands",
+      periodicity: "Quarterly",
+      indicator_type: "count", // Discrete type
+      temporal_aggregation: "period-total", // Total over quarter
+    },
+  ];
+
+  const result = await processBatch(items, {
+    toTimeScale: "month",
+    toMagnitude: "ones",
+    explain: true,
+  });
+
+  assertEquals(result.successful.length, 1);
+  const item = result.successful[0];
+
+  // Should ONLY apply magnitude scaling (thousands -> ones)
+  // Should NOT divide by 3 (quarter -> month)
+  assertEquals(item.normalized, 520394000); // 520394 * 1000, NOT ÷ 3
+  assertEquals(item.normalizedUnit, "ones");
+
+  // Explain metadata should show adjusted=false
+  assertExists(item.explain);
+  assertExists(item.explain.periodicity);
+  assertEquals(item.explain.periodicity.adjusted, false);
+  assertEquals(item.explain.periodicity.factor, 1);
+  assertEquals(
+    item.explain.periodicity.description,
+    "Time conversion blocked (count with period-total)",
+  );
+});
+
 Deno.test("Batch: period-rate allows time conversion", async () => {
   const items: BatchItem[] = [
     {