fix(input): mou gamecontrollerdb.txt a l'arrel i el copia al build/ via CMake

CMakeLists.txt

@@ -203,6 +203,26 @@ add_custom_command(
 add_custom_target(resource_pack ALL DEPENDS ${RESOURCE_PACK})
 add_dependencies(${PROJECT_NAME} resource_pack)
 
+# --- CÒPIA DE gamecontrollerdb.txt AL COSTAT DEL BINARI ---
+# SDL_AddGamepadMappingsFromFile només llegeix del filesystem real (no del
+# pack), així que el fitxer ha de viure al directori del binari. Es copia
+# només si existeix per no fallar la build d'algú que encara no ha fet
+# `make controllerdb`.
+if(EXISTS "${CMAKE_SOURCE_DIR}/gamecontrollerdb.txt")
+    set(CONTROLLER_DB "${CMAKE_BINARY_DIR}/gamecontrollerdb.txt")
+    add_custom_command(
+        OUTPUT ${CONTROLLER_DB}
+        COMMAND ${CMAKE_COMMAND} -E copy_if_different
+            "${CMAKE_SOURCE_DIR}/gamecontrollerdb.txt"
+            "${CONTROLLER_DB}"
+        DEPENDS "${CMAKE_SOURCE_DIR}/gamecontrollerdb.txt"
+        COMMENT "Copiant gamecontrollerdb.txt → build/"
+        VERBATIM
+    )
+    add_custom_target(controller_db ALL DEPENDS ${CONTROLLER_DB})
+    add_dependencies(${PROJECT_NAME} controller_db)
+endif()
+
 target_compile_options(${PROJECT_NAME} PRIVATE -Wall -Wextra -Wpedantic)
 target_compile_definitions(${PROJECT_NAME} PRIVATE
     $<$<CONFIG:Debug>:_DEBUG>