feat(welcome,about): App Review unblock + first-90s polish

- AboutView: new DATA SOURCES section with Apple Weather attribution +
  link to https://weatherkit.apple.com/legal-attribution.html (App
  Review 5.2.5 requirement; previous submission rejected for missing
  WeatherKit attribution). Keeps the wabi-sabi by living in About
  next to OPEN SOURCE instead of cluttering the Walk Summary.
- WelcomeView: breath cue ("Take a breath. We're right with you.")
  beneath the walking-prints animation so users read the wait as
  intentional ritual rather than load time. Privacy promise on screen
  below the Begin button ("No accounts. Your recordings stay private —
  they never leave your device.") so the trust signal lands in the
  first 90 seconds instead of being buried in Settings.

Follow-ups in issues #42 (profile launch latency) and #43 (onboarding
delight pass — Wander Zoom energy on first launch).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: momentmaker

.blitz/project.json

@@ -0,0 +1,7 @@
+{
+  "createdAt" : "2026-03-21T22:51:27Z",
+  "lastOpenedAt" : "2026-03-21T22:51:27Z",
+  "name" : "pilgrim-ios",
+  "platform" : "iOS",
+  "type" : "swift"
+}

Pilgrim/Scenes/Settings/AboutView.swift

@@ -29,6 +29,8 @@ struct AboutView: View {
                 }
                 openSource
                 divider
+                dataSources
+                divider
                 motto
                 seasonalVignette
 
@@ -37,7 +39,7 @@ struct AboutView: View {
             .padding(.horizontal, Constants.UI.Padding.big)
         }
         .scrollContentBackground(.hidden)
-        .canvasBackground()
+        .background(Color.parchment)
         .navigationTitle("About")
         .navigationBarTitleDisplayMode(.inline)
         .toolbar {
@@ -75,11 +77,6 @@ struct AboutView: View {
                     setAlternateIcon("AppIconDark")
                 }
             }
-            if UIApplication.shared.alternateIconName != "AppIconConstellation" {
-                Button("Use constellation icon") {
-                    setAlternateIcon("AppIconConstellation")
-                }
-            }
             if let current = UIApplication.shared.alternateIconName, current != "AppIconDefault" {
                 Button("Reset to default") {
                     setAlternateIcon("AppIconDefault")
@@ -300,6 +297,31 @@ struct AboutView: View {
         }
     }
 
+    // MARK: - Data Sources
+
+    private var dataSources: some View {
+        VStack(alignment: .leading, spacing: Constants.UI.Padding.normal - Constants.UI.Padding.xs) {
+            Text("DATA SOURCES")
+                .font(Constants.Typography.caption)
+                .tracking(2)
+                .foregroundColor(.stone.opacity(0.6))
+                .padding(.top, Constants.UI.Padding.big)
+
+            Text("Weather conditions and temperature recorded with each walk are fetched at the start of the walk from Apple's WeatherKit service.")
+                .font(Constants.Typography.body)
+                .foregroundColor(.ink)
+
+            linkRow(
+                icon: "cloud.sun",
+                label: "\u{F8FF} Weather — Legal attribution",
+                url: URL(string: "https://weatherkit.apple.com/legal-attribution.html")!
+            )
+        }
+        .padding(.bottom, Constants.UI.Padding.big)
+        .frame(maxWidth: .infinity, alignment: .leading)
+        .sectionAppear(index: 4, appeared: appeared, reduceMotion: reduceMotion)
+    }
+
     // MARK: - Motto
 
     private var motto: some View {

Pilgrim/Scenes/Setup/Welcome/WelcomeView.swift

@@ -52,7 +52,17 @@ struct WelcomeView: View {
             Spacer()
 
             footprintsView
+
+            // Breath cue framing the walking-prints animation — turns dead
+            // load time into intentional ritual so first-time users read
+            // the wait as design, not latency.
+            Text("Take a breath. We're right with you.")
+                .font(Constants.Typography.caption.italic())
+                .foregroundColor(.fog)
+                .multilineTextAlignment(.center)
+                .padding(.top, Constants.UI.Padding.small)
                 .padding(.bottom, Constants.UI.Padding.big)
+                .opacity(animation.showQuote ? 0.85 : 0)
 
             Button(action: beginTapped) {
                 Text(LS["Welcome.Begin"])
@@ -67,6 +77,18 @@ struct WelcomeView: View {
             .opacity(animation.showButton ? 1 : 0)
             .offset(y: animation.showButton ? 0 : 30)
             .disabled(animation.isExiting)
+
+            // Privacy promise on-screen at sign-up. Surfacing this here
+            // (vs. burying it in Settings) earns trust in the first 90s
+            // and signals Pilgrim's no-accounts, no-tracking posture
+            // before the user is asked for anything.
+            Text("No accounts. Your recordings stay private — they never leave your device.")
+                .font(Constants.Typography.caption)
+                .foregroundColor(.fog)
+                .multilineTextAlignment(.center)
+                .padding(.top, Constants.UI.Padding.normal)
+                .opacity(animation.showButton ? 0.7 : 0)
+                .accessibilityLabel("No accounts required. Your recordings stay private and never leave your device.")
         }
         .padding(.horizontal, Constants.UI.Padding.big)
         .padding(.bottom, Constants.UI.Padding.normal)