feat(plotly): implement histogram-basic

- Basic histogram showing frequency distribution of numeric data
- Uses Python Blue (#306998) color with 0.85 opacity
- Scaled fonts for 4800x2700 resolution (title: 40pt, tick: 32pt)
- Added hover template for interactivity
- Outputs to plot.png at 4800x2700 pixels

Author: github-actions[bot]

plots/plotly/histogram/histogram-basic/default.py

@@ -13,16 +13,20 @@
 
 # Create figure
 fig = go.Figure()
-fig.add_trace(go.Histogram(x=values, marker_color="#306998", opacity=0.8, nbinsx=30))
+fig.add_trace(
+    go.Histogram(
+        x=values, marker_color="#306998", opacity=0.85, hovertemplate="Range: %{x}<br>Count: %{y}<extra></extra>"
+    )
+)
 
 # Layout
 fig.update_layout(
-    title={"text": "Basic Histogram", "font": {"size": 20}, "x": 0.5, "xanchor": "center"},
-    xaxis_title="Value",
-    yaxis_title="Frequency",
+    title={"text": "Basic Histogram", "font": {"size": 40}, "x": 0.5, "xanchor": "center"},
+    xaxis_title={"text": "Value", "font": {"size": 40}},
+    yaxis_title={"text": "Frequency", "font": {"size": 40}},
     template="plotly_white",
-    xaxis={"title_font": {"size": 20}, "tickfont": {"size": 16}},
-    yaxis={"title_font": {"size": 20}, "tickfont": {"size": 16}},
+    xaxis={"tickfont": {"size": 32}, "showgrid": True, "gridcolor": "rgba(0,0,0,0.1)"},
+    yaxis={"tickfont": {"size": 32}, "showgrid": True, "gridcolor": "rgba(0,0,0,0.1)"},
     bargap=0.05,
 )