fix(lme): eliminate zero-drop spikes caused by exchange bank holidays and reporting gaps

backend/scrape_lme.py

@@ -286,6 +286,7 @@ def get_entire_diagram_data(field: str, ttl_seconds: int = 3600):
             series_type = "price"
 
         pts = []
+        last_valid_y = None
         for val in line:
             raw_x = val.attrib.get('x', '') # YYYY/MM/DD
             date_iso = raw_x.replace('/', '-')
@@ -298,6 +299,15 @@ def get_entire_diagram_data(field: str, ttl_seconds: int = 3600):
             except:
                 y_val = 0.0
 
+            # Filter out bank holiday / reporting zero anomalies (e.g. market closed)
+            if y_val <= 0:
+                if last_valid_y is not None:
+                    y_val = last_valid_y
+                else:
+                    continue
+            else:
+                last_valid_y = y_val
+
             pts.append({
                 "x": date_iso,
                 "date_display": date_display,

frontend/src/components/LmeView.tsx

@@ -752,6 +752,7 @@ export function LmeView() {
                       {/* Price Curve */}
                       {showPrice && (
                         <Area
+                          connectNulls={true}
                           yAxisId="price"
                           type="monotone"
                           dataKey="priceVal"
@@ -767,6 +768,7 @@ export function LmeView() {
                       {/* Stock Curve (Mapped to Left Y-Axis) */}
                       {showStocks && stockLine && (
                         <Line
+                          connectNulls={true}
                           yAxisId="stocks"
                           type="monotone"
                           dataKey="stockVal"