feat: Adds grid / nav links to home page.

Sources/Routes/Models/AtticVentilation.swift

@@ -1,5 +1,9 @@
 public enum AtticVentilation {
 
+  public static let description = """
+  Calculate attic ventilation requirements and assess current conditions.
+  """
+
   public struct Request: Codable, Equatable, Sendable {
 
     public let pressureDifferential: Double

Sources/Routes/Models/Capacitor.swift

@@ -1,5 +1,9 @@
 public enum Capacitor {
 
+  public static let description = """
+  Calculate run capacitor values based on electrical measurements.
+  """
+
   public enum Mode: String, CaseIterable, Codable, Equatable, Sendable {
     case size
     case test

Sources/Routes/Models/DehumidifierSizing.swift

@@ -2,6 +2,10 @@ import Foundation
 
 public enum DehumidifierSize {
 
+  public static let description = """
+  Calculate dehumidifier size based on latent load and performance data.
+  """
+
   /// Represents the request for determining dehumidifier size based on
   /// latent load and indoor conditions.
   public struct Request: Codable, Equatable, Sendable {

Sources/Routes/Models/FilterPressureDrop.swift

@@ -1,5 +1,9 @@
 public enum FilterPressureDrop {
 
+  public static let description = """
+  Calculate filter pressure drop and sizing based on system requirements.
+  """
+
   public enum Request: Codable, Equatable, Sendable {
     case basic(Basic)
     case fanLaw(FanLaw)

Sources/Routes/Models/HVACSystemPerformance.swift

@@ -3,6 +3,10 @@ import PsychrometricClient
 
 public enum HVACSystemPerformance {
 
+  public static let description = """
+  Analyze HVAC system performance and capacity.
+  """
+
   public struct Request: Codable, Equatable, Sendable {
 
     public let altitude: Double?

Sources/Routes/Models/MoldRisk.swift

@@ -2,6 +2,11 @@ import Foundation
 import PsychrometricClient
 
 public enum MoldRisk {
+
+  public static let description = """
+  Assess mold risk based on indoor conditions.
+  """
+
   public struct Request: Codable, Equatable, Sendable {
 
     public let temperature: Double

Sources/Routes/Models/RoomPressure.swift

@@ -1,5 +1,9 @@
 public enum RoomPressure {
 
+  public static let description = """
+  Calculate return grille and duct sizing for room pressure balancing.
+  """
+
   public enum Mode: String, CaseIterable, Codable, Equatable, Sendable {
     case knownAirflow
     case measuredPressure