Improve YouTube IPA preparation and build process

Refactor YouTube IPA preparation and build steps, including error handling and environment variable management.

.github/workflows/buildapp.yml

@@ -93,7 +93,7 @@ jobs:
           path: theos/sdks/
           key: iOS-${{ inputs.sdk_version }}-SDK
 
-      - name: Download iOS SDK
+      - name: Download iOS SDK (if cache miss)
         if: steps.SDK.outputs.cache-hit != 'true'
         run: |
           git clone --quiet -n --depth=1 --filter=tree:0 https://github.com/aricloverALT/sdks/ sdks
@@ -137,17 +137,18 @@ jobs:
           git clone --quiet --depth=1 https://code.videolan.org/videolan/dav1d.git $THEOS/vendor/dav1d
           git clone --quiet --depth=1 https://chromium.googlesource.com/webm/libvpx $THEOS/vendor/libvpx
           git clone --quiet --depth=1 https://github.com/PoomSmart/YTUHD.git YTUHD
-
-      - name: Hash YT ipa url
-        run: |
-          URL_YT="$(jq -r '.inputs.decrypted_youtube_url' $GITHUB_EVENT_PATH)"
-          echo ::add-mask::$URL_YT
-          echo URL_YT=$URL_YT >> $GITHUB_ENV
+        env:
+          THEOS: ${{ github.workspace }}/theos
 
       - name: Prepare YouTube iPA
         id: prepare_youtube
         run: |
-          wget "$YOUTUBE_URL" --quiet -O main/YouTube.ipa
+          set -e
+          if [ -z "${{ github.event.inputs.decrypted_youtube_url }}" ]; then
+            echo "No decrypted_youtube_url provided"
+            exit 1
+          fi
+          wget "${{ github.event.inputs.decrypted_youtube_url }}" --quiet -O main/YouTube.ipa
           cd main
           mv YouTube.ipa YouTube.zip
           unzip -q YouTube.zip
@@ -155,28 +156,25 @@ jobs:
           echo "YT_VERSION=$youtube_version" >> $GITHUB_ENV
           echo "youtube_version=${youtube_version}" >> $GITHUB_OUTPUT
 
-        env:
-          YOUTUBE_URL: ${{ env.URL_YT }}
-
       - name: Fix compiling & Build Package
         id: build_package
         run: |
+          set -e
           cd main
-          # Update Makefile
-          sed -i '' "s/^BUNDLE_ID .*/BUNDLE_ID = ${{ inputs.bundle_id }}/" Makefile || echo "BUNDLE_ID = ${{ inputs.bundle_id }}" >> Makefile
-          sed -i '' "s/^DISPLAY_NAME .*/DISPLAY_NAME = ${{ inputs.app_name }}/" Makefile || echo "DISPLAY_NAME = ${{ inputs.app_name }}" >> Makefile
-          sed -i '' "s/^export TARGET .*/export TARGET = iphone:clang:${{ inputs.sdk_version }}:16.0/" Makefile || echo "export TARGET = iphone:clang:${{ inputs.sdk_version }}:16.0" >> Makefile
-          
-          # YTUHD flag
+          # Use portable replacements on macOS runner; if sed replace fails, append fallback lines.
+          perl -0777 -pe "s/^BUNDLE_ID\s*=.*$/BUNDLE_ID = ${{ inputs.bundle_id }}/m" -i Makefile || echo "BUNDLE_ID = ${{ inputs.bundle_id }}" >> Makefile
+          perl -0777 -pe "s/^DISPLAY_NAME\s*=.*$/DISPLAY_NAME = ${{ inputs.app_name }}/m" -i Makefile || echo "DISPLAY_NAME = ${{ inputs.app_name }}" >> Makefile
+          perl -0777 -pe "s/^export TARGET\s*=.*$/export TARGET = iphone:clang:${{ inputs.sdk_version }}:16.0/m" -i Makefile || echo "export TARGET = iphone:clang:${{ inputs.sdk_version }}:16.0" >> Makefile
+
           if [ "${{ inputs.ytuhd }}" = "true" ]; then
-            echo "YTUHD_ENABLED=1" >> Makefile
+            grep -q '^YTUHD_ENABLED=1' Makefile || echo "YTUHD_ENABLED=1" >> Makefile
           else
-            echo "YTUHD_ENABLED=0" >> Makefile
+            grep -q '^YTUHD_ENABLED=0' Makefile || echo "YTUHD_ENABLED=0" >> Makefile
           fi
-          
+
+          # Export the SDK override to the Makefile build environment
           make package THEOS_PACKAGE_SCHEME=rootless IPA=Payload/YouTube.app FINALPACKAGE=1
           echo "package=$(ls -t packages | head -n1)" >> $GITHUB_OUTPUT
-
         env:
           THEOS: ${{ github.workspace }}/theos
 
@@ -193,7 +191,6 @@ jobs:
           PARENT_BUNDLE="${{ inputs.bundle_id }}"
           for appex in *.appex; do
             if [ -f "$appex/Info.plist" ]; then
-              # Set extension ID to parent + .Extension (common pattern)
               EXT_ID="${PARENT_BUNDLE}.Extension"
               /usr/libexec/PlistBuddy -c "Set :CFBundleIdentifier $EXT_ID" "$appex/Info.plist" 2>/dev/null || true
               echo "Set extension ID: $EXT_ID"