Add ExportOptions.plist for TestFlight automation

Configures automatic App Store Connect upload with:
- app-store-connect distribution method
- Automatic signing
- Symbol upload enabled
- Auto-managed version/build numbers

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

iosApp/ExportOptions.plist

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>method</key>
+    <string>app-store-connect</string>
+    <key>destination</key>
+    <string>upload</string>
+    <key>signingStyle</key>
+    <string>automatic</string>
+    <key>uploadSymbols</key>
+    <true/>
+    <key>manageAppVersionAndBuildNumber</key>
+    <true/>
+</dict>
+</plist>