chore(folio): nest iosApp under app/ for KotlinConf parity

Match KotlinConf-app's filesystem layout where every entry point (android,
ios, web, shared, ui-components) lives under app/. iosApp is still an Xcode
project, not a Gradle module, so settings.gradle.kts is unchanged.

examples/folio/.gitignore

@@ -2,9 +2,9 @@
 build/
 .kotlin/
 local.properties
-iosApp/build/
-iosApp/iosApp.xcodeproj/
-iosApp/iosApp.xcodeproj/**
+app/iosApp/build/
+app/iosApp/iosApp.xcodeproj/
+app/iosApp/iosApp.xcodeproj/**
 .DS_Store
 sanderling/node_modules/
 sanderling/runs/

examples/folio/README.md

@@ -35,7 +35,7 @@ just ios                          # default device: iPhone 17 Pro
 IOS_DEVICE="iPhone 15" just ios   # pick a different simulator
 ```
 
-`just ios` regenerates `iosApp/iosApp.xcodeproj` from `iosApp/project.yml`,
+`just ios` regenerates `app/iosApp/iosApp.xcodeproj` from `app/iosApp/project.yml`,
 builds the KMP framework (`Shared.framework` from `:app:shared`), links it
 into the SwiftUI host, installs, and launches.
 

examples/folio/app/iosApp/project.yml

@@ -19,7 +19,7 @@ targets:
     sources:
       - iosApp
     dependencies:
-      - framework: ../app/shared/build/bin/iosSimulatorArm64/debugFramework/Shared.framework
+      - framework: ../shared/build/bin/iosSimulatorArm64/debugFramework/Shared.framework
         embed: false
       - sdk: libsqlite3.tbd
     settings:
@@ -28,16 +28,16 @@ targets:
         PRODUCT_NAME: iosApp
         INFOPLIST_FILE: iosApp/Info.plist
         FRAMEWORK_SEARCH_PATHS:
-          - $(SRCROOT)/../app/shared/build/bin/$(KOTLIN_FRAMEWORK_DIR)/debugFramework
+          - $(SRCROOT)/../shared/build/bin/$(KOTLIN_FRAMEWORK_DIR)/debugFramework
         OTHER_LDFLAGS:
           - -ObjC
         KOTLIN_FRAMEWORK_DIR: iosSimulatorArm64
     preBuildScripts:
       - name: Build Kotlin framework
         script: |
-          cd "$SRCROOT/.."
+          cd "$SRCROOT/../.."
           ANDROID_HOME="${ANDROID_HOME:-$HOME/Library/Android/sdk}" \
             ./gradlew :app:shared:linkDebugFrameworkIosSimulatorArm64
         outputFiles:
-          - $(SRCROOT)/../app/shared/build/bin/iosSimulatorArm64/debugFramework/Shared.framework/Shared
+          - $(SRCROOT)/../shared/build/bin/iosSimulatorArm64/debugFramework/Shared.framework/Shared
         basedOnDependencyAnalysis: false

examples/folio/justfile

@@ -55,13 +55,13 @@ clean:
     set -euo pipefail
     export ANDROID_HOME="$(just _android-home)"
     ./gradlew clean
-    rm -rf iosApp/build
+    rm -rf app/iosApp/build
 
 # Regenerate iosApp.xcodeproj from project.yml.
 ios-gen:
     #!/usr/bin/env bash
     set -euo pipefail
-    cd iosApp && xcodegen generate
+    cd app/iosApp && xcodegen generate
 
 # Build + install + launch on a booted iOS simulator (boots IOS_DEVICE if none).
 ios:
@@ -74,11 +74,11 @@ ios:
       sleep 3
     fi
     just ios-gen
-    xcodebuild -project iosApp/iosApp.xcodeproj -scheme iosApp \
+    xcodebuild -project app/iosApp/iosApp.xcodeproj -scheme iosApp \
       -destination 'platform=iOS Simulator,name={{ios_device}}' \
-      -derivedDataPath iosApp/build \
+      -derivedDataPath app/iosApp/build \
       build | tail -5
-    xcrun simctl install booted iosApp/build/Build/Products/Debug-iphonesimulator/iosApp.app
+    xcrun simctl install booted app/iosApp/build/Build/Products/Debug-iphonesimulator/iosApp.app
     xcrun simctl launch booted app.folio
 
 # Run 'sanderling test' against the folio app. Uses a connected device if one is