feat: Adds proposed kw interpolation.

Tests/ManualSTests/ManualSTests.swift

@@ -13,7 +13,7 @@ struct ManualSTests {
     } operation: {
       @Dependency(\.manualS) var manualS
 
-      let response = try await manualS.coolingInterpolation(.init(
+      let response = try await manualS.interpolate.cooling(.init(
         summerDesignInfo: .mock,
         coolingLoad: .mockCoolingLoad,
         systemType: .airToAir(type: .airConditioner, compressor: .singleSpeed, climate: .mildWinterOrLatentLoad),
@@ -48,7 +48,7 @@ struct ManualSTests {
     } operation: {
       @Dependency(\.manualS) var manualS
 
-      let response = try await manualS.coolingInterpolation(.init(
+      let response = try await manualS.interpolate.cooling(.init(
         summerDesignInfo: .mock,
         coolingLoad: .mockCoolingLoad,
         systemType: .airToAir(type: .airConditioner, compressor: .singleSpeed, climate: .mildWinterOrLatentLoad),
@@ -78,7 +78,7 @@ struct ManualSTests {
     } operation: {
       @Dependency(\.manualS) var manualS
 
-      let response = try await manualS.coolingInterpolation(.init(
+      let response = try await manualS.interpolate.cooling(.init(
         summerDesignInfo: .mock,
         coolingLoad: .mockCoolingLoad,
         systemType: .airToAir(type: .airConditioner, compressor: .singleSpeed, climate: .mildWinterOrLatentLoad),
@@ -108,7 +108,7 @@ struct ManualSTests {
     } operation: {
       @Dependency(\.manualS) var manualS
 
-      let response = try await manualS.coolingInterpolation(.init(
+      let response = try await manualS.interpolate.cooling(.init(
         summerDesignInfo: .mock,
         coolingLoad: .mockCoolingLoad,
         systemType: .airToAir(type: .airConditioner, compressor: .singleSpeed, climate: .mildWinterOrLatentLoad),
@@ -145,7 +145,7 @@ struct ManualSTests {
     } operation: {
       @Dependency(\.manualS) var manualS
 
-      let response = try await manualS.heatPumpHeatingInterpolation(.init(
+      let response = try await manualS.interpolate.heatPumpHeating(.init(
         winterDesignTemperature: 5,
         heatLoss: 49667,
         climateType: .mildWinterOrLatentLoad,
@@ -166,7 +166,7 @@ struct ManualSTests {
     } operation: {
       @Dependency(\.manualS) var manualS
 
-      let response = try await manualS.furnaceInterpolation(
+      let response = try await manualS.interpolate.furnace(
         .init(
           elevation: nil,
           winterDesignTemperature: 5,
@@ -189,7 +189,7 @@ struct ManualSTests {
     } operation: {
       @Dependency(\.manualS) var manualS
 
-      let response = try await manualS.furnaceInterpolation(
+      let response = try await manualS.interpolate.furnace(
         .init(
           elevation: nil,
           winterDesignTemperature: 5,
@@ -204,6 +204,46 @@ struct ManualSTests {
     }
   }
 
+  @Test
+  func proposedKWInterpolation() async throws {
+    try await withDependencies {
+      $0.manualS = .liveValue
+    } operation: {
+      @Dependency(\.manualS) var manualS
+
+      let response = try await manualS.interpolate.proposeKW(
+        .init(heatLoss: 49667, proposedKW: 15)
+      )
+
+      #expect(!response.failed)
+      #expect(response.capacityAsPercentOfLoad == 107)
+      #expect(response.supplementalHeatRequired == 14)
+    }
+  }
+
+  @Test
+  func proposedKWInterpolation_with_heatPump() async throws {
+    try await withDependencies {
+      $0.manualS = .liveValue
+    } operation: {
+      @Dependency(\.manualS) var manualS
+
+      let response = try await manualS.interpolate.proposeKW(
+        .init(
+          winterDesignTemperature: 5,
+          climateType: .mildWinterOrLatentLoad,
+          capacity: .mock,
+          heatLoss: 49667,
+          proposedKW: 15
+        )
+      )
+
+      #expect(!response.failed)
+      #expect(response.capacityAsPercentOfLoad == 136)
+      #expect(response.supplementalHeatRequired == 11)
+    }
+  }
+
   @Test
   func balancePoint() async throws {
     try await withDependencies {