App Store prep: privacy manifests, 1.0.1 (2), OGL attribution, UK empty state, screenshot harness

- PrivacyInfo.xcprivacy in app + widget targets (UserDefaults 1C8F.1;
  app declares Location linked + Diagnostics not-linked, no tracking)
- Version bump 1.0.1 (2) in App + Widget plists
- Settings → Data source footer: OGL attribution + 'refresh up to twice a day'
- Stations empty state: friendly UK-only explainer + 'Browse all UK stations'
- ContentView launch-arg harness (pattern of -showKeySheet): -skipOnboarding
  and -tab stations|favourites|alerts|settings for screenshot capture
- APPSTORE.md updated (blockers struck, tasks done, yuzu-hub workflow)
- BACKLOG.md hygiene: GitHub-first header, Trends merged note, offline-first-run DONE

FuelBoardWidgets/PrivacyInfo.xcprivacy

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>NSPrivacyTracking</key>
+	<false/>
+	<key>NSPrivacyTrackingDomains</key>
+	<array/>
+	<key>NSPrivacyCollectedDataTypes</key>
+	<array/>
+	<key>NSPrivacyAccessedAPITypes</key>
+	<array>
+		<dict>
+			<key>NSPrivacyAccessedAPIType</key>
+			<string>NSPrivacyAccessedAPICategoryUserDefaults</string>
+			<key>NSPrivacyAccessedAPITypeReasons</key>
+			<array>
+				<string>1C8F.1</string>
+			</array>
+		</dict>
+	</array>
+</dict>
+</plist>