ci(ios): fix exportArchive signing by specifying manual signing style

The CI runner has no Apple account, so exportArchive fails with
"Failed to Use Accounts". Fix by explicitly specifying manual signing
with the provisioning profile UUID in ExportOptions.plist.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Claude

.github/workflows/ios-release.yml

@@ -110,10 +110,15 @@ jobs:
 
       - name: Export IPA
         run: |
+          EXPORT_PLIST="$RUNNER_TEMP/ExportOptions.plist"
+          sed "s/PROVISIONING_PROFILE_UUID_PLACEHOLDER/$PROVISIONING_PROFILE_UUID/" \
+            app/ios/ExportOptions.plist > "$EXPORT_PLIST"
+
           xcodebuild -exportArchive \
             -archivePath "$RUNNER_TEMP/FareBot.xcarchive" \
             -exportPath "$RUNNER_TEMP/export" \
-            -exportOptionsPlist app/ios/ExportOptions.plist
+            -exportOptionsPlist "$EXPORT_PLIST" \
+            -allowProvisioningUpdates
 
       - name: Install fastlane
         run: brew install fastlane

app/ios/ExportOptions.plist

@@ -7,6 +7,15 @@
     <string>app-store-connect</string>
     <key>teamID</key>
     <string>ZJ9GEQ36AH</string>
+    <key>signingStyle</key>
+    <string>manual</string>
+    <key>signingCertificate</key>
+    <string>Apple Distribution</string>
+    <key>provisioningProfiles</key>
+    <dict>
+        <key>com.codebutler.farebot</key>
+        <string>PROVISIONING_PROFILE_UUID_PLACEHOLDER</string>
+    </dict>
     <key>uploadSymbols</key>
     <true/>
     <key>destination</key>