- Migrated old SIGNAL/SLOT connect syntax to function-pointer syntax - socket_handler.cpp: timeout, connected, disconnected, readyRead, bytesWritten - targettimer.cpp: timeout → MyTimerSlot - socketreader.cpp: readyRead, error (with QOverload for overloaded signal) - Updated MIGRATION_STATUS.md with migration progress - Part of Qt5→Qt6 migration with C++17 constraint (RTI 7.7.0 compatibility)