- Created WiFiManagerRequestArgs nested class to encapsulate HTTP request arguments
- Updated setSaveParamsCallback to accept WiFiManagerRequestArgs by value
- Updated handleWifiSave() and handleParamSave() to build RequestArgs early
- Updated doParamSave() to accept and use RequestArgs for custom HTML params
- Updated test callbacks to match new signature
- All tests passing (43/43)
- Move library code from src/ to lib/WiFiManager/src/
- Move headers from include/ to lib/WiFiManager/include/
- Move library.json to lib/WiFiManager/
- Update platformio.ini with Unity test framework configuration
- Add test structure following PlatformIO unit testing best practices
- Remove empty src/ directory (not needed for library-only projects)