manuals tidy tier 2: empty-catch, enum-size, trivially-destructible

source/core/resources/resource_cache.hpp

@@ -3,6 +3,7 @@
 #include <SDL3/SDL.h>
 
 #include <cstddef>
+#include <cstdint>
 #include <memory>
 #include <string>
 #include <vector>
@@ -42,7 +43,7 @@ namespace Resource {
        private:
         Cache() = default;
 
-        enum class LoadStage {
+        enum class LoadStage : std::uint8_t {
             MUSICS,
             SOUNDS,
             BITMAPS,