Advance Wayland and KDE package bring-up

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local/recipes/kde/kf6-extra-cmake-modules/source/toolchain/hasMainSymbol.cmake

@@ -0,0 +1,10 @@
+execute_process(COMMAND nm --dynamic ${TARGET} ERROR_VARIABLE nm_errors OUTPUT_VARIABLE out RESULT_VARIABLE result)
+
+if (NOT result EQUAL 0)
+    message(FATAL_ERROR "nm failed on ${TARGET} exit(${result}): ${nm_errors}")
+endif()
+
+string(FIND ${out} " T main\n" found)
+if(found LESS 0)
+    message(FATAL_ERROR "Could not find a main() symbol on ${TARGET}")
+endif()