Refine pricing display and Gaussian context

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

@@ -1660,7 +1660,7 @@ export function runTests() {
   const firstBand = bandPoints[0].runway_band;
   assert(Array.isArray(firstBand) && firstBand[0] === 24.0 && firstBand[1] === 26.0, "runway_band tuple values should match input limits");
 
-  // ── Legacy Gaussian probability data should not render as a visible chart overlay ──
+  // ── Legacy Gaussian probability data should be available as compact tooltip context only ──
   const gaussianOverlayChart = __buildTemperatureChartDataForTest(
     {
       city: "toronto",
@@ -1688,9 +1688,13 @@ export function runTests() {
   ) as any;
 
   const gaussianOverlay = gaussianOverlayChart.probabilityOverlay;
-  assert(gaussianOverlay === null, "legacy Gaussian probabilities should not create visible chart overlays");
+  assert(
+    gaussianOverlay?.muLine?.label === "Gaussian μ 27.4°C" &&
+      gaussianOverlay.bands.length === 3,
+    "legacy Gaussian probabilities should remain available for compact tooltip context",
+  );
   assert(
     !gaussianOverlayChart.series.some((series: any) => String(series.key || "").includes("probability")),
-    "legacy Gaussian probability distribution should not be rendered as a time-series line",
+    "legacy Gaussian probability distribution should not be rendered as a time-series line on the main chart",
   );
 }

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

@@ -1,3 +1,7 @@
+import {
+  readFileSync,
+} from "node:fs";
+import path from "node:path";
 import {
   __buildTemperatureTooltipProbabilityRowsForTest,
   __buildTemperatureTooltipRowsForTest,
@@ -73,7 +77,23 @@ export function runTests() {
   );
 
   assert(
-    probabilityRows.length === 0,
-    "temperature tooltip should not show Gaussian μ or probability-band rows",
+    probabilityRows.length === 2,
+    "temperature tooltip should show Gaussian μ and the leading probability bucket as compact context",
+  );
+  assert(
+    probabilityRows.some((row) => row.key === "legacy_probability_mu" && row.value === "27.4°C") &&
+      probabilityRows.some((row) => row.key === "legacy_probability_27_0" && row.value === "42%"),
+    "temperature tooltip should format Gaussian μ and probability values without drawing a full probability band on the main chart",
+  );
+
+  const projectRoot = process.cwd();
+  const chartCanvasSource = readFileSync(
+    path.join(projectRoot, "components", "dashboard", "scan-terminal", "TemperatureChartCanvas.tsx"),
+    "utf8",
+  );
+  assert(
+    chartCanvasSource.includes("probabilityOverlay={probabilityOverlay}") &&
+      !chartCanvasSource.includes("probabilityOverlay={null}"),
+    "temperature chart canvas must pass probability overlay data into the tooltip instead of hiding Gaussian μ",
   );
 }