Screenshots: target iOS 26 sims + run capture on CI

.github/workflows/release.yml

@@ -59,10 +59,12 @@ jobs:
       - name: Select Xcode
         run: sudo xcode-select -s /Applications/Xcode_${{ env.XCODE_VERSION }}.app/Contents/Developer
 
-      # TODO: The script was written for local use and will need CI-friendly
-      # xcodebuild flags (CODE_SIGN_IDENTITY="", CODE_SIGNING_REQUIRED=NO)
-      # passed through to capture-screenshots.sh before this works on runners.
+      # SCREENSHOT_XCODEBUILD_ARGS disables code signing for the underlying
+      # capture-screenshots.sh so the UI-test build works on a runner (simulator
+      # builds need no signing).
       - name: Generate promo screenshots
+        env:
+          SCREENSHOT_XCODEBUILD_ARGS: 'CODE_SIGN_IDENTITY= CODE_SIGNING_REQUIRED=NO COMPILER_INDEX_STORE_ENABLE=NO'
         run: ./scripts/generate-promo-screenshots.sh
 
       - name: Upload promo screenshots

.github/workflows/screenshots.yml

@@ -0,0 +1,33 @@
+name: App Store Screenshots
+
+on:
+  workflow_dispatch:
+
+env:
+  XCODE_VERSION: '26.2'
+
+jobs:
+  screenshots:
+    name: Capture App Store Screenshots
+    runs-on: macos-15
+    timeout-minutes: 60
+    if: github.actor == 'adborbas'
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Select Xcode
+        run: sudo xcode-select -s /Applications/Xcode_${{ env.XCODE_VERSION }}.app/Contents/Developer
+
+      # The script targets iOS 26 simulators (Liquid Glass styling), which ship
+      # with the Xcode 26 image. SCREENSHOT_XCODEBUILD_ARGS disables code signing
+      # so the UI-test build works on a runner (simulator builds need no signing).
+      - name: Capture App Store screenshots
+        env:
+          SCREENSHOT_XCODEBUILD_ARGS: 'CODE_SIGN_IDENTITY= CODE_SIGNING_REQUIRED=NO COMPILER_INDEX_STORE_ENABLE=NO'
+        run: ./scripts/capture-screenshots.sh
+
+      - name: Upload screenshots
+        uses: actions/upload-artifact@v4
+        with:
+          name: app-store-screenshots
+          path: Screenshots/

scripts/capture-screenshots.sh

@@ -7,21 +7,32 @@ SCHEME="Hemera"
 OUTPUT_DIR="$PROJECT_DIR/Screenshots"
 DERIVED_DATA="$PROJECT_DIR/.deriveddata-screenshots"
 
-# Find simulator UDID for a device name, preferring the latest runtime.
+# Extra args appended to every `xcodebuild test` run. CI sets this to pass the
+# code-signing flags a simulator build needs on a runner (no signing identity);
+# empty for local runs, which sign automatically. Word-split on spaces.
+EXTRA_XCODEBUILD_ARGS=(${SCREENSHOT_XCODEBUILD_ARGS:-})
+
+# Find simulator UDID for a device name, restricted to iOS 26+ runtimes so the
+# screenshots capture the iOS 26 "Liquid Glass" styling — older runtimes render
+# the pre-26 look. Among matching runtimes the highest version wins.
 # Args: DEVICE_NAME MATCH_MODE (exact|substring)
 find_simulator() {
     local name="$1"
     local match_mode="${2:-exact}"
     xcrun simctl list devices available -j | python3 -c "
-import json, sys
+import json, sys, re
 data = json.load(sys.stdin)
 name, match_mode = sys.argv[1], sys.argv[2]
 candidates = []
 for runtime, devices in data['devices'].items():
+    m = re.search(r'iOS-(\d+)-(\d+)', runtime)
+    if not m or int(m.group(1)) < 26:
+        continue
+    version = (int(m.group(1)), int(m.group(2)))
     for d in devices:
         matched = (name == d['name'].strip()) if match_mode == 'exact' else (name in d['name'])
         if matched and d['isAvailable']:
-            candidates.append((runtime, d['udid']))
+            candidates.append((version, d['udid']))
 candidates.sort(key=lambda x: x[0])
 if candidates:
     print(candidates[-1][1])
@@ -32,6 +43,18 @@ IPHONE_69_ID="$(find_simulator "iPhone 16 Pro Max" "exact")"
 
 IPAD_13_ID="$(find_simulator "iPad Pro 13-inch (M4)" "substring")"
 
+# These devices are expected on an iOS 26+ runtime (guaranteed by the CI Xcode 26
+# image). Fail loudly if either is missing rather than silently capturing a
+# partial set — or, on an older runtime, the pre-26 look.
+missing=()
+[ -z "$IPHONE_69_ID" ] && missing+=("iPhone 16 Pro Max")
+[ -z "$IPAD_13_ID" ] && missing+=("iPad Pro 13-inch (M4)")
+if [ ${#missing[@]} -gt 0 ]; then
+    echo "ERROR: No iOS 26+ simulator found for: ${missing[*]}." >&2
+    echo "This script targets iOS 26 for the Liquid Glass styling; those sims ship with the CI Xcode 26 image (locally, add an iOS 26 device for each)." >&2
+    exit 1
+fi
+
 capture_screenshots() {
     local device_name="$1"
     local device_id="$2"
@@ -65,6 +88,7 @@ capture_screenshots() {
         "${testing_args[@]}" \
         -derivedDataPath "$DERIVED_DATA" \
         -resultBundlePath "$result_bundle" \
+        ${EXTRA_XCODEBUILD_ARGS[@]+"${EXTRA_XCODEBUILD_ARGS[@]}"} \
         2>&1 | tail -5
 
     local attachment_dir="$OUTPUT_DIR/$output_subdir"