Expand activity strip to nine months

ios/Sources/ListScreens.swift

@@ -414,7 +414,7 @@ final class HeatmapView: UIView {
         ) ?? latest
         let firstMonth = Calendar(identifier: .gregorian).date(
             byAdding: .month,
-            value: -5,
+            value: -8,
             to: latestMonth
         ) ?? latestMonth
         cells = page.heatCells.filter {
@@ -423,7 +423,7 @@ final class HeatmapView: UIView {
         super.init(frame: CGRect(x: 0, y: 0, width: 0, height: 132))
         backgroundColor = .systemBackground
         let title = UILabel(frame: CGRect(x: 16, y: 12, width: 300, height: 22))
-        title.text = "Activity · last 6 months"
+        title.text = "Activity · last 9 months"
         title.font = .preferredFont(forTextStyle: .subheadline)
         title.textColor = .secondaryLabel
         addSubview(title)