chore: clean up formatting and prepare for unit test implementation

- Run ktlint, dart format, and SwiftLint across all code
- Fix iOS native test by removing obsolete NetworkType test
- Move .editorconfig to root and configure to ignore Pigeon files
- Add .swiftlint.yml to exclude Pigeon-generated files
- Update CLAUDE.md with Pigeon and GitHub Actions documentation
- Remove old CLAUDE.md files from individual packages

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

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

Author: ened

.editorconfig

@@ -0,0 +1,5 @@
+[*.kt]
+ktlint_standard = enabled
+
+[**/pigeon/*.g.kt]
+ktlint = disabled

.swiftlint.yml

@@ -0,0 +1,3 @@
+excluded:
+  - "**/*.g.swift"
+  - "**/pigeon/*.swift"

CLAUDE.md

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+## Project Workflow
+- Project uses GitHub Actions
+- Use `ktlint -F .` in root folder to format Kotlin code
+- Use SwiftLint for code formatting
+- Always resolve formatting and analyzer errors before completing a task
+
+## Pigeon Code Generation
+- Pigeon configuration is in `workmanager_platform_interface/pigeons/workmanager_api.dart`
+- To regenerate Pigeon files: `cd workmanager_platform_interface && dart run pigeon --input pigeons/workmanager_api.dart`
+- Generated files:
+  - Dart: `workmanager_platform_interface/lib/src/pigeon/workmanager_api.g.dart`
+  - Kotlin: `workmanager_android/android/src/main/kotlin/dev/fluttercommunity/workmanager/pigeon/WorkmanagerApi.g.kt`
+  - Swift: `workmanager_apple/ios/Classes/pigeon/WorkmanagerApi.g.swift`
+- Do not manually edit generated files (*.g.* files)
+
+## Code Formatting Configuration
+- `.editorconfig` in root folder configures ktlint to ignore Pigeon-generated Kotlin files
+- `.swiftlint.yml` in root folder excludes Pigeon-generated Swift files from linting
+
+## GitHub Actions Configuration
+- Format checks: `.github/workflows/format.yml`
+  - Runs dart format, ktlint, and SwiftLint
+- Tests: `.github/workflows/test.yml`
+  - `test`: Runs Dart unit tests
+  - `native_ios_tests`: Runs iOS native tests with xcodebuild
+  - `native_android_tests`: Runs Android native tests with Gradle
+  - `drive_ios`: Runs Flutter integration tests on iOS simulator
+  - `drive_android`: Runs Flutter integration tests on Android emulator