feat: tune scan dashboard and telegram monitor

frontend/components/dashboard/scan-terminal/__tests__/cityDetailMergeChartCoverage.test.ts

@@ -0,0 +1,24 @@
+import fs from "node:fs";
+import path from "node:path";
+
+function assert(condition: unknown, message: string) {
+  if (!condition) throw new Error(message);
+}
+
+export function runTests() {
+  const source = fs.readFileSync(
+    path.join(process.cwd(), "hooks", "useDashboardStore.tsx"),
+    "utf8",
+  );
+
+  assert(
+    source.includes("function pickRicherHourly"),
+    "city detail merge should have an explicit hourly-series preservation helper",
+  );
+  assert(
+    /hourly:\s*pickRicherHourly\(\s*current\.hourly,\s*incoming\.hourly\s*\)/.test(
+      source,
+    ),
+    "deep-analysis refresh must not let sparse incoming hourly data overwrite chart-capable cached hourly data",
+  );
+}