chore: checkpoint current milestone work

ReadViewDemo/Podfile

@@ -1,5 +1,4 @@
-# Uncomment the next line to define a global platform for your project
-# platform :ios, '9.0'
+platform :ios, '15.6'
 
 target 'ReadViewDemo' do
   # Comment the next line if you don't want to use dynamic frameworks
@@ -9,9 +8,22 @@ target 'ReadViewDemo' do
 end
 
 post_install do |installer|
-  installer.pods_project.targets.each do |target|
-    target.build_configurations.each do |config|
-      config.build_settings['ENABLE_USER_SCRIPT_SANDBOXING'] = 'NO'
-    end
+  apply_settings = lambda do |config|
+    config.build_settings['ENABLE_USER_SCRIPT_SANDBOXING'] = 'NO'
+    config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '15.6'
+  end
+
+  # Pods project (Pods.xcodeproj)
+  installer.pods_project.build_configurations.each { |c| apply_settings.call(c) }
+  installer.pods_project.targets.each { |t| t.build_configurations.each { |c| apply_settings.call(c) } }
+
+  # User project(s) that integrate Pods (e.g. ReadViewDemo)
+  installer.aggregate_targets.each do |at|
+    p = at.user_project
+    next unless p
+
+    p.build_configurations.each { |c| apply_settings.call(c) }
+    p.targets.each { |t| t.build_configurations.each { |c| apply_settings.call(c) } }
+    p.save
   end
 end