feat: Finalizes room-pressure view.

Sources/ViewController/Live.swift

@@ -46,7 +46,8 @@ extension ViewController: DependencyKey {
     @Dependency(\.psychrometricClient) var psychrometricClient
 
     return .init(view: { request in
-      request.logger.debug("View route: \(request.route)")
+      let logger = request.logger
+      logger.debug("View route: \(request.route)")
       switch request.route {
       case .index:
         return MainPage {
@@ -108,9 +109,9 @@ extension ViewController: DependencyKey {
         case let .index(mode):
           return request.respond(RoomPressureForm(mode: mode, response: nil))
 
-        // FIX:
-        case .submit:
-          fatalError()
+        case let .submit(request):
+          let response = try await request.respond(logger: logger)
+          return RoomPressureResult(response: response)
         }
       }
     })