Use correct secret names for App Store Connect API key

- AC_APIKEY_ID
- AC_APIKEY_ISSUER_ID
- AC_APIKEY_P8_BASE64 (decoded to /tmp/AuthKey.p8)

_Generated with `cmux`_

Author: ammario

.github/workflows/build.yml

@@ -36,10 +36,12 @@ jobs:
           fi
           
           # Notarization credentials (optional - will skip if not provided)
-          if [ -n "${{ secrets.APPLE_API_KEY_ID }}" ]; then
-            export API_KEY_ID="${{ secrets.APPLE_API_KEY_ID }}"
-            export API_KEY_ISSUER_ID="${{ secrets.APPLE_API_ISSUER_ID }}"
-            export API_KEY="${{ secrets.APPLE_API_KEY }}"
+          if [ -n "${{ secrets.AC_APIKEY_ID }}" ]; then
+            # Decode API key to file
+            echo "${{ secrets.AC_APIKEY_P8_BASE64 }}" | base64 -D > /tmp/AuthKey.p8
+            export API_KEY_ID="${{ secrets.AC_APIKEY_ID }}"
+            export API_KEY_ISSUER_ID="${{ secrets.AC_APIKEY_ISSUER_ID }}"
+            export API_KEY="/tmp/AuthKey.p8"
             echo "✅ Notarization credentials found (API key) - will notarize"
           else
             echo "⚠️  No notarization credentials - skipping notarization"