Seed additional products, improve left rail, improve search box, add visuals to buttons, rename working documents to working docs and improve left rail nav

backend/tests/test_costing_engine.py

@@ -16,7 +16,7 @@ from app.models.mix import Mix, MixIngredient
 from app.models.product import Product
 from app.models.raw_material import RawMaterial, RawMaterialPriceVersion
 from app.services.client_access_service import build_client_access_export, ensure_user_module_permissions, serialize_client_account
-from app.services.costing_engine import calculate_mix_cost, calculate_product_cost, calculate_raw_material_cost
+from app.services.costing_engine import calculate_mix_cost, calculate_product_cost, calculate_raw_material_cost, serialize_raw_material
 from app.services.mix_calculator_service import calculate_mix_calculator_preview
 
 
@@ -38,6 +38,15 @@ def test_calculate_raw_material_cost():
     assert result.cost_per_kg == 0.51
 
 
+def test_serialize_raw_material_ignores_non_positive_active_price():
+    raw_material = RawMaterial(name="Apple Flavouring", unit_of_measure="kg", kg_per_unit=1, status="active")
+    raw_material.price_versions.append(RawMaterialPriceVersion(market_value=0, waste_percentage=0, effective_date=date(2026, 4, 1), status="active"))
+
+    serialized = serialize_raw_material(raw_material)
+
+    assert serialized["current_price"] is None
+
+
 def test_mix_and_product_cost_breakdown():
     db = build_session()
 
@@ -286,14 +295,17 @@ def test_mix_calculator_endpoints_respect_owner_visibility():
 
         options_response = client.get("/api/mix-calculator/options", headers=superadmin_headers)
         assert options_response.status_code == 200
-        assert options_response.json()["products"][0]["product_name"] == "Hunter Orchard Blend 20kg"
+        options_payload = options_response.json()
+        assert len(options_payload["products"]) >= 100
+        seeded_product = next(product for product in options_payload["products"] if product["product_name"] == "Specialty Pigeon Breeder 20kg")
+        assert seeded_product["unit_size_kg"] == 20
 
         create_response = client.post(
             "/api/mix-calculator",
             json={
                 "mix_date": "2026-04-29",
-                "client_name": "Hunter Premium Produce",
-                "product_id": 1,
+                "client_name": seeded_product["client_name"],
+                "product_id": seeded_product["product_id"],
                 "batch_size_kg": 560,
                 "prepared_by_name": "Amelia Hart",
                 "notes": "Morning production run",
@@ -302,9 +314,11 @@ def test_mix_calculator_endpoints_respect_owner_visibility():
         )
         assert create_response.status_code == 201
         created = create_response.json()
+        assert created["product_name"] == seeded_product["product_name"]
         assert created["session_number"].startswith("HPP-20260429-")
         assert created["total_bags"] == 28
-        assert created["lines"][0]["required_kg"] == 360
+        assert len(created["lines"]) > 0
+        assert created["lines"][0]["required_kg"] > 0
 
         patch_response = client.patch(
             f"/api/mix-calculator/{created['id']}",