refactor(log): migra els subsistemes restants i elimina iostream

Acaba la migració dels std::cout/cerr a Log::*:

- core/locale, core/ui/ui_config, core/rendering/{screen,text,gif,
  surface, sprite/animated_sprite, sdl3gpu/*}.
- game/{options, debug_config, editor/editor_config, levels/level_manager,
  map/{map,tilemap,paint_layer}, entities/entity_manager_loadlevel}.

Severitats coherents: warns per a configs absents amb fallback,
errors per a YAML malformat o E/S fallida, infos per a estats.

Resultat:
- 0 occurrences de std::cout/std::cerr a source/.
- Cap #include <iostream> orfà (eliminat de surface.cpp).
- Output funcional idèntic al històric; AEE_LOG filtra (ex.
  `AEE_LOG=warn` només mostra warnings, `AEE_LOG=*:warn,Tag:info`
  combina globals i overrides).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

source/game/map/map.cpp

@@ -1,11 +1,11 @@
 #include "game/map/map.hpp"
 
 #include <cmath>
-#include <iostream>
 #include <stdexcept>
 
 #include "core/resources/resource_helper.hpp"
 #include "external/fkyaml_node.hpp"
+#include "utils/log.hpp"
 
 namespace {
 
@@ -90,11 +90,7 @@ namespace Map {
         // canviarà el flag a true quan transiti a OPEN.
         door_open = false;
 
-        std::cout << "Map: geometria " << grid_cols << "x" << grid_rows
-                  << " sarcs " << sarc_w << "x" << sarc_h
-                  << " pitch " << pitch_x << "x" << pitch_y
-                  << " door_col " << door_col
-                  << " des de " << yaml_path << '\n';
+        Log::info("Map", "geometria {}x{} sarcs {}x{} pitch {}x{} door_col {} des de {}", grid_cols, grid_rows, sarc_w, sarc_h, pitch_x, pitch_y, door_col, yaml_path);
     }
 
     auto getSarcRect(int col, int row) -> SDL_FRect {