diff --git a/frontend/components/dashboard/scan-terminal/LiveTemperatureThresholdChart.tsx b/frontend/components/dashboard/scan-terminal/LiveTemperatureThresholdChart.tsx
index ad9d8885..fd799279 100644
--- a/frontend/components/dashboard/scan-terminal/LiveTemperatureThresholdChart.tsx
+++ b/frontend/components/dashboard/scan-terminal/LiveTemperatureThresholdChart.tsx
@@ -702,7 +702,7 @@ export function LiveTemperatureThresholdChart({
       actions={timeframeActions}
       className={PEAK_GLOW_PANEL_CLASS[peakGlow.state]}
     >
-      <div className="flex h-full min-h-[300px] flex-col">
+      <div className={clsx("flex h-full flex-col", compact ? "min-h-0" : "min-h-[300px]")}>
         <TemperatureStatsBars
           isEn={isEn}
           compact={compact}
diff --git a/frontend/components/dashboard/scan-terminal/TemperatureChartCanvas.tsx b/frontend/components/dashboard/scan-terminal/TemperatureChartCanvas.tsx
index 401154f1..7a0ef5d9 100644
--- a/frontend/components/dashboard/scan-terminal/TemperatureChartCanvas.tsx
+++ b/frontend/components/dashboard/scan-terminal/TemperatureChartCanvas.tsx
@@ -115,7 +115,8 @@ export function TemperatureChartCanvas({
 
   const canRenderChart = chartSize.width > 0 && chartSize.height > 0;
   const chartWidth = Math.max(1, chartSize.width);
-  const chartHeight = Math.max(220, chartSize.height);
+  const minChartHeight = compact ? 120 : 220;
+  const chartHeight = Math.max(minChartHeight, chartSize.height);
   const individualRunwaySeriesCount = chartSeries.filter(
     (series) => series.key.startsWith("runway_") && series.key !== "runway_max",
   ).length;
@@ -125,7 +126,7 @@ export function TemperatureChartCanvas({
     chartSeries.some((series) => series.key === "runway_max");
 
   return (
-    <div className="relative flex min-h-[240px] flex-1 flex-col p-2">
+    <div className={clsx("relative flex flex-1 flex-col p-2", compact ? "min-h-[120px]" : "min-h-[240px]")}>
       <div className="flex flex-wrap items-center gap-x-4 gap-y-1.5 px-3 py-1.5 text-[11px] border-b border-[#e2e8f0] bg-white">
         {chartSeries.length > 1 &&
           chartSeries
@@ -187,7 +188,7 @@ export function TemperatureChartCanvas({
           </span>
         )}
       </div>
-      <div ref={chartHostRef} className="relative min-h-[220px] flex-1">
+      <div ref={chartHostRef} className={clsx("relative flex-1", compact ? "min-h-[120px]" : "min-h-[220px]")}>
         {canRenderChart && (
           <ReComposedChart
             width={chartWidth}
diff --git a/frontend/components/dashboard/scan-terminal/__tests__/terminalGridPolicy.test.ts b/frontend/components/dashboard/scan-terminal/__tests__/terminalGridPolicy.test.ts
index 0c5141a4..1b4fd816 100644
--- a/frontend/components/dashboard/scan-terminal/__tests__/terminalGridPolicy.test.ts
+++ b/frontend/components/dashboard/scan-terminal/__tests__/terminalGridPolicy.test.ts
@@ -19,6 +19,10 @@ export function runTests() {
     path.join(projectRoot, "components", "dashboard", "scan-terminal", "LiveTemperatureThresholdChart.tsx"),
     "utf8",
   );
+  const chartCanvasSource = fs.readFileSync(
+    path.join(projectRoot, "components", "dashboard", "scan-terminal", "TemperatureChartCanvas.tsx"),
+    "utf8",
+  );
 
   assert(
     dashboardSource.includes("MAX_TERMINAL_CHARTS = 9"),
@@ -55,4 +59,10 @@ export function runTests() {
       chartSource.includes("lastAppliedPatchRevisionRef.current = 0;"),
     "switching city slots must clear the previous live temperature so Fahrenheit values cannot leak into Celsius charts",
   );
+  assert(
+    chartSource.includes('compact ? "min-h-0" : "min-h-[300px]"') &&
+      chartCanvasSource.includes("const minChartHeight = compact ? 120 : 220") &&
+      chartCanvasSource.includes('compact ? "min-h-[120px]" : "min-h-[220px]"'),
+    "compact grid charts must not force desktop minimum heights that get clipped inside 3x3 terminal slots",
+  );
 }
diff --git a/tests/test_deployment_runtime_config.py b/tests/test_deployment_runtime_config.py
index a2f9bca9..460947a4 100644
--- a/tests/test_deployment_runtime_config.py
+++ b/tests/test_deployment_runtime_config.py
@@ -36,3 +36,14 @@ def test_scan_terminal_prewarm_is_lazy_by_default():
         "if _scan_terminal_prewarm_enabled():\n            start_scan_terminal_prewarm()",
         "",
     )
+
+
+def test_scan_terminal_backend_timeout_returns_before_next_proxy_abort():
+    import web.services.scan_terminal_config as scan_terminal_config
+
+    route_source = (
+        ROOT / "frontend" / "app" / "api" / "scan" / "terminal" / "route.ts"
+    ).read_text(encoding="utf-8")
+
+    assert 'POLYWEATHER_SCAN_TERMINAL_PROXY_TIMEOUT_MS || "28000"' in route_source
+    assert scan_terminal_config.SCAN_TERMINAL_BUILD_TIMEOUT_SEC <= 24
diff --git a/web/services/scan_terminal_config.py b/web/services/scan_terminal_config.py
index fde058da..7d35c02f 100644
--- a/web/services/scan_terminal_config.py
+++ b/web/services/scan_terminal_config.py
@@ -29,9 +29,11 @@ SCAN_TERMINAL_PAYLOAD_TTL_SEC = min(
     SCAN_ROWS_REFRESH_SEC,
     max(10, int(os.getenv("POLYWEATHER_SCAN_TERMINAL_PAYLOAD_TTL_SEC", str(SCAN_ROWS_REFRESH_SEC)))),
 )
-SCAN_TERMINAL_BUILD_TIMEOUT_SEC = max(
-    8,
-    int(os.getenv("POLYWEATHER_SCAN_TERMINAL_BUILD_TIMEOUT_SEC", "120")),
+SCAN_TERMINAL_BUILD_TIMEOUT_SEC = _env_int(
+    "POLYWEATHER_SCAN_TERMINAL_BUILD_TIMEOUT_SEC",
+    20,
+    min_value=8,
+    max_value=24,
 )
 SCAN_TERMINAL_MAX_WORKERS = _env_int(
     "POLYWEATHER_SCAN_TERMINAL_MAX_WORKERS",