refactor: Update graph for TVL and DAA

app.py

@@ -187,6 +187,9 @@ def create_visualizations():
     df_tvl["total_value_locked_usd"] = df_tvl["amount0_usd"] + df_tvl["amount1_usd"]
     df_tvl_daily = df_tvl.groupby(["date", "chain_name"])["total_value_locked_usd"].sum().reset_index()
     df_tvl_daily['date'] = pd.to_datetime(df_tvl_daily['date'])
+
+    # Filter out dates with zero total value locked
+    df_tvl_daily = df_tvl_daily[df_tvl_daily["total_value_locked_usd"] > 0]
     # Plot total value locked
     fig_tvl = px.bar(
         df_tvl_daily,
@@ -211,7 +214,7 @@ def create_visualizations():
             ticktext=df_tvl_daily['date'].dt.strftime('%b %d'),
             tickangle=90,
         ),
-        bargap=0.8,
+        bargap=0.1,
         height=700,
     )
     fig_tvl.update_xaxes(tickformat="%b %d") 
@@ -349,6 +352,8 @@ def create_visualizations():
         color_discrete_sequence=["darkgreen"]
     )
     fig_agents_with_transactions_daily.update_layout(
+        title=dict(
+        x=0.5,y=0.95,xanchor='center',yanchor='top'),  # Adjust vertical position and Center the title
         yaxis=dict(tickmode='linear', tick0=0, dtick=1),
         xaxis=dict(
             tickmode='array',