Onboarding: Data page never dead-ends on Open Settings

- The Prices-ready page button stays 'Continue': tapping it fires the
  Local Network prompt + relay probe; on grant the page auto-advances to
  the final slide (existing onChange), on denial it still advances.
- Removed the Open Settings branch from the Data page entirely (kept for
  Location page, where the user can still be sent to Settings).
- Denied caption no longer suggests opening Settings. 35 tests pass.

FuelBoard/OnboardingView.swift

@@ -209,7 +209,7 @@ struct OnboardingView: View {
             Label("Connected — prices will load", systemImage: "checkmark.circle.fill")
                 .foregroundStyle(.green)
         } else if prompter.dataDenied {
-            Text("Local network access was denied — prices won't load until it's allowed. You can open Settings to change this.")
+            Text("Local network access was denied — prices won't load until it's allowed, but you can keep using FuelBoard.")
                 .font(.footnote)
                 .foregroundStyle(.secondary)
                 .multilineTextAlignment(.center)
@@ -282,13 +282,10 @@ struct OnboardingView: View {
                 }
             }
         case 3:
-            VStack(spacing: 10) {
-                primaryButton(
-                    prompter.dataDenied ? "Open Settings" : (prompter.dataGranted ? "Continue" : (prompter.dataLoading ? "Checking…" : "Continue"))
-                ) {
-                    if prompter.dataDenied {
-                        openSettings()
-                    } else if prompter.dataGranted {
+            primaryButton(prompter.dataLoading ? "Checking…" : "Continue") {
+                if prompter.dataGranted || prompter.dataDenied {
+                    // Prompt answered (allowed or denied) — move on to the
+                    // final slide. Never dead-end on an Open Settings button.
                     page = 4
                 } else if !prompter.dataLoading {
                     // Fires the Local Network prompt + relay probe here,
@@ -297,7 +294,6 @@ struct OnboardingView: View {
                 }
             }
             .disabled(prompter.dataLoading)
-            }
         default:
             primaryButton("Start Using FuelBoard") { finish() }
         }