Improve onboarding statistics for better relevance and impact

- Update stats to include cost values for urgency
- Ensure each stat relates directly to its feature's value proposition
- Replace HVAC-specific stat with broader home repair data
- Update documentation with reorganized sources and additional reference stats

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

iosApp/iosApp/Onboarding/OnboardingValuePropsView.swift

@@ -14,17 +14,17 @@ struct OnboardingValuePropsContent: View {
             subtitle: "Your memory just got an upgrade",
             description: "Smart reminders keep you on top of furnace filters, gutter cleaning, and everything in between. No more \"when did I last...?\" moments.",
             gradient: [Color.appPrimary, Color.appSecondary],
-            statNumber: "60%",
-            statLabel: "of homeowners delay routine maintenance"
+            statNumber: "$6,000+",
+            statLabel: "spent yearly on repairs that could've been prevented"
         ),
         FeatureHighlight(
             icon: "dollarsign.circle.fill",
-            title: "Save Real Money",
+            title: "Save Thousands",
             subtitle: "Prevention beats repair every time",
-            description: "Catch small issues before they become expensive disasters. A $30 filter change beats a $5,000 HVAC replacement any day.",
+            description: "Delayed maintenance turns $100 fixes into $10,000 disasters. Stay ahead of problems before they drain your wallet.",
             gradient: [Color(hex: "#34C759") ?? .green, Color(hex: "#30D158") ?? .green],
-            statNumber: "65%",
-            statLabel: "of repairs could have been prevented"
+            statNumber: "46%",
+            statLabel: "of homeowners spent $5,000+ on surprise repairs"
         ),
         FeatureHighlight(
             icon: "doc.text.fill",
@@ -32,8 +32,8 @@ struct OnboardingValuePropsContent: View {
             subtitle: "No more digging through drawers",
             description: "Snap a photo of your receipts and warranties. When something breaks, you'll know exactly what's covered—instantly.",
             gradient: [Color.appAccent, Color(hex: "#FF9500") ?? .orange],
-            statNumber: "75%",
-            statLabel: "of claim denials from misunderstanding coverage"
+            statNumber: "47%",
+            statLabel: "of homebuyers lack emergency funds for repairs"
         ),
         FeatureHighlight(
             icon: "person.2.fill",
@@ -41,8 +41,8 @@ struct OnboardingValuePropsContent: View {
             subtitle: "Teamwork makes the dream work",
             description: "Share your home with family members. Everyone sees what needs doing, and nobody can claim they \"didn't know.\"",
             gradient: [Color(hex: "#AF52DE") ?? .purple, Color(hex: "#BF5AF2") ?? .purple],
-            statNumber: "37%",
-            statLabel: "more tasks completed with digital tools"
+            statNumber: "56%",
+            statLabel: "say sharing chores is key to a happy home"
         )
     ]