Add .gitignore and stop tracking local Xcode and macOS files.

Exclude xcuserdata, build artifacts, and secrets from version control while removing previously committed user-specific scheme and state files.

Co-authored-by: Cursor <cursoragent@cursor.com>

.gitignore

@@ -0,0 +1,50 @@
+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+._*
+
+# Xcode user-specific
+xcuserdata/
+*.xcuserstate
+*.xcbkptlist
+*.xccheckout
+*.moved-aside
+*.pbxuser
+*.mode1v3
+*.mode2v3
+*.perspectivev3
+
+# Xcode build artifacts
+build/
+DerivedData/
+*.ipa
+*.dSYM
+*.dSYM.zip
+*.app.dSYM
+*.app.dSYM.zip
+*.xcarchive
+
+# Swift Package Manager
+.build/
+.swiftpm/xcode/package.xcworkspace/xcuserdata/
+Package.resolved.bak
+
+# CocoaPods build artifacts (Pods/ 目录已入库，保留 AMap 预编译库)
+Pods/resources-to-copy-*.txt
+
+# Fastlane
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots/**/*.png
+fastlane/test_output
+
+# IDE / editor
+.idea/
+*.swp
+*~
+
+# Env / secrets
+.env
+.env.*
+*.pem