Create visuals.py

tools/visuals.py

@@ -0,0 +1,25 @@
+import pandas as pd
+import plotly.express as px
+
+def histogram_tool(file_path: str, column: str):
+    df = pd.read_csv(file_path)
+    fig = px.histogram(df, x=column, nbins=30, title=f"Histogram – {column}", template="plotly_dark")
+    return fig
+
+def scatter_matrix_tool(file_path: str, cols: list[str]):
+    df = pd.read_csv(file_path)
+    fig = px.scatter_matrix(df[cols], title="Scatter‑Matrix", template="plotly_dark")
+    return fig
+
+def corr_heatmap_tool(file_path: str):
+    df = pd.read_csv(file_path).select_dtypes("number")
+    corr = df.corr(numeric_only=True)
+    fig = px.imshow(
+        corr,
+        color_continuous_scale="RdBu",
+        title="Correlation Heat‑map",
+        aspect="auto",
+        labels=dict(color="ρ"),
+        template="plotly_dark",
+    )
+    return fig