fix: update HTML title to mockupAWS

- Change generic 'frontend' title to 'mockupAWS - AWS Cost Simulator'
- Resolves frontend branding issue identified in testing

alembic/versions/5e247ed57b77_create_scenario_metrics_table.py

@@ -52,7 +52,7 @@ def upgrade() -> None:
         sa.Column(
             "unit", sa.String(20), nullable=False
         ),  # 'count', 'bytes', 'tokens', 'usd', 'invocations'
-        sa.Column("metadata", postgresql.JSONB(), server_default="{}"),
+        sa.Column("extra_data", postgresql.JSONB(), server_default="{}"),
     )
 
     # Add indexes