feat(pipeline): add e2e orders master medallion flow and dbt models

dbt/models/gold/gold_regional_waste_metrics.sql

@@ -0,0 +1,16 @@
+-- dbt Gold Regional Waste Revenue & Compliance Mart
+SELECT 
+  region_zone,
+  facility_type,
+  waste_category,
+  COUNT(order_id) AS total_orders,
+  COUNT(DISTINCT facility_id) AS active_facilities_count,
+  COUNT(DISTINCT generator_company) AS active_generators_count,
+  ROUND(SUM(volume_ton), 2) AS total_waste_volume_ton,
+  ROUND(SUM(total_order_amount), 2) AS total_gross_revenue,
+  ROUND(AVG(total_order_amount / NULLIF(volume_ton, 0)), 2) AS avg_revenue_per_ton,
+  COUNT(CASE WHEN environmental_compliance_status = 'COMPLIANT' THEN 1 END) AS compliant_orders_count,
+  CURRENT_TIMESTAMP AS mart_refreshed_at
+FROM {{ ref('silver_waste_manifest_enriched') }}
+GROUP BY region_zone, facility_type, waste_category
+ORDER BY total_waste_volume_ton DESC

dbt/models/silver/silver_waste_manifest_enriched.sql

@@ -0,0 +1,27 @@
+-- dbt Silver Cleansed Manifest Orders Enriched with Master Facilities
+SELECT 
+  o.order_id,
+  o.manifest_code,
+  o.order_date,
+  o.generator_company,
+  o.waste_category,
+  o.volume_ton,
+  o.tariff_per_ton,
+  o.transport_fee,
+  ROUND((o.volume_ton * o.tariff_per_ton) + o.transport_fee, 2) AS total_order_amount,
+  o.order_status,
+  f.facility_id,
+  f.facility_name,
+  f.region_zone,
+  f.facility_type,
+  f.compliance_rating,
+  f.facility_status,
+  CASE 
+    WHEN f.facility_status = 'ACTIVE' AND o.volume_ton <= f.max_daily_capacity_ton THEN 'COMPLIANT'
+    WHEN f.facility_status != 'ACTIVE' THEN 'UNLICENSED_FACILITY_WARNING'
+    ELSE 'CAPACITY_EXCEEDED_WARNING'
+  END AS environmental_compliance_status
+FROM {{ ref('bronze_waste_orders') }} o
+LEFT JOIN {{ ref('bronze_ref_facilities') }} f
+  ON o.facility_id = f.facility_id
+WHERE o.order_status != 'CANCELLED'