Add platform-specific start scripts to dev.yml (#358)

This PR adds namespaced start commands for all sub-platforms under dev.yml:

- `dev swift start`: Generates project and runs target compilation for booted simulator (or falls back to available iPhone).
<img width="831" height="316" alt="image" src="https://github.com/user-attachments/assets/b87a8160-0cd3-4bd6-bab8-e32642140a97" />


- `dev android start`: Builds and installs CheckoutKitAndroidDemo app on active emulator.
<img width="961" height="285" alt="image" src="https://github.com/user-attachments/assets/902ae3bf-3196-45dd-8daf-cab3053d871b" />

- `dev react-native start`: Launches Metro server with cache reset (backward-compatible).
<img width="974" height="369" alt="image" src="https://github.com/user-attachments/assets/1508634a-7c14-4301-9c1a-2e6702259ebf" />

- `dev web start`: Starts local dev server (backward-compatible).
<img width="1341" height="334" alt="image" src="https://github.com/user-attachments/assets/59e2e44c-6f97-4f39-93d4-a1043a2916e2" />

Also resolves an Xcode target compilation issue where get_device_id would previously select unavailable simulator profiles.

Author: kieran-osgood-shopify

dev.yml

@@ -172,6 +172,10 @@ commands:
             desc: Build all sample applications
             run: cd platforms/android/samples/MobileBuyIntegration && ./gradlew build
 
+      start:
+        desc: Build the android sample app and install it to the booted emulator
+        run: cd platforms/android/samples/CheckoutKitAndroidDemo && ./gradlew installDebug
+
       test:
         desc: Run all tests with clean build
         run: cd platforms/android && ./gradlew clean test --console=plain
@@ -284,6 +288,23 @@ commands:
           samples:
             desc: Build all sample applications to verify integration
             run: cd platforms/swift && ./Scripts/build_samples
+
+      start:
+        desc: Build the swift sample app for the booted simulator (preferably)
+        run: |
+          set -e
+          cd platforms/swift
+          ./Scripts/generate_xcode_projects
+          # Automatically detect if a booted simulator exists, otherwise fallback to default
+          BOOTED_ID=$(xcrun simctl list devices booted | grep -E 'iPhone|iPad|Air' | sed -n -E 's/.*\(([0-9A-Fa-f-]{36})\).*/\1/p' | head -n1 || true)
+          if [ -n "$BOOTED_ID" ]; then
+            export CURRENT_SIMULATOR_UUID="$BOOTED_ID"
+            echo "Using booted simulator: $BOOTED_ID"
+          else
+            echo "No booted simulator found. Falling back to default simulator."
+          fi
+          cd Samples
+          ../Scripts/xcode_run build CheckoutKitSwiftDemo
       test:
         desc: |
           `dev swift test` - Run all tests for the ShopifyCheckoutKit-Package.
@@ -474,9 +495,9 @@ commands:
           fi
           echo "Cleaned root, module and sample workspaces"
 
-      server:
+      start:
         desc: Start Metro development server
-        aliases: [s]
+        aliases: [s, server]
         run: cd platforms/react-native && pnpm sample start --reset-cache
 
       ios:
@@ -603,10 +624,14 @@ commands:
         desc: Remove dist and coverage directories
         run: cd platforms/web && pnpm clean
 
-      sample:
+      start:
         desc: Start the sample app dev server
         aliases: [s]
         run: cd platforms/web && pnpm sample
+
+      sample:
+        desc: Start the sample app dev server
+        run: cd platforms/web && pnpm sample
         subcommands:
           build:
             desc: Build the sample app

platforms/swift/Scripts/get_device_id

@@ -21,7 +21,7 @@ fi
 # List all devices and filter
 if [ -n "$SEARCH" ]; then
   # Create a search string with spaces to match exact model (case insensitive)
-  DEVICES=$(xcrun simctl list devices | grep -i "$DEVICE_TYPE")
+  DEVICES=$(xcrun simctl list devices | grep -v -i "unavailable" | grep -i "$DEVICE_TYPE")
 
   # Use grep to find lines containing all search terms (case insensitive)
   for term in $SEARCH; do
@@ -32,7 +32,7 @@ if [ -n "$SEARCH" ]; then
   DEVICE_ID=$(echo "$DEVICES" | head -1 | sed -E 's/.*\(([A-Z0-9-]+)\).*/\1/')
 else
   # If no model specified, get the first device of the type (case insensitive)
-  DEVICE_ID=$(xcrun simctl list devices | grep -i "$DEVICE_TYPE" | head -1 | sed -E 's/.*\(([A-Z0-9-]+)\).*/\1/')
+  DEVICE_ID=$(xcrun simctl list devices | grep -v -i "unavailable" | grep -i "$DEVICE_TYPE" | head -1 | sed -E 's/.*\(([A-Z0-9-]+)\).*/\1/')
 fi
 
 # Check if identifier was found

platforms/swift/Scripts/xcode_run

@@ -22,9 +22,19 @@ fi
 if [[ -n $CURRENT_SIMULATOR_UUID ]]; then
     dest="id=$CURRENT_SIMULATOR_UUID"
 else
-    # Get a valid iPhone simulator ID using get_device_id.sh
-    DEVICE_ID=$("$SCRIPT_DIR/get_device_id" "iPhone 16")
-    dest="id=$DEVICE_ID"
+    # Prefer a currently booted iOS simulator (iPhone, iPad, Air, etc.)
+    BOOTED_ID=$(xcrun simctl list devices booted | grep -v -i "unavailable" | grep -E 'iPhone|iPad|Air' | sed -n -E 's/.*\(([0-9A-Fa-f-]{36})\).*/\1/p' | head -n1 || true)
+    if [[ -n "$BOOTED_ID" ]]; then
+        dest="id=$BOOTED_ID"
+    else
+        # Fallback to get_device_id
+        DEVICE_ID=$("$SCRIPT_DIR/get_device_id" "iPhone 16" 2>/dev/null || "$SCRIPT_DIR/get_device_id" "iPhone" 2>/dev/null || true)
+        if [[ -n "$DEVICE_ID" ]]; then
+            dest="id=$DEVICE_ID"
+        else
+            dest="platform=iOS Simulator,name=iPhone 15 Pro"
+        fi
+    fi
 fi
 
 xcodebuild_cmd="xcodebuild $ACTION -scheme $SCHEME -sdk iphonesimulator -destination \"$dest\" -skipPackagePluginValidation -disableAutomaticPackageResolution"