feat: Animación elástica tipo pegatina para AppLogo

Implementación de deformación elástica con vértices para el logo:

FADE IN (0.5s):
- Scale: 120% → 100% con easing elástico (bounce)
- Squash Y: 0.6 → 1.0 con easing back (aplastamiento)
- Stretch X: compensación automática
- Efecto: logo se "pega" aplastándose y rebotando

FADE OUT (0.5s):
- Scale: 100% → 120% (aceleración cuadrática)
- Squash Y: 1.0 → 1.3 (estiramiento vertical)
- Stretch X: 1.0 → 0.8 (compresión horizontal)
- Rotación: 0° → ~5.7° (torsión sutil)
- Efecto: logo se "despega" estirándose y girando

Características técnicas:
- Enum AppLogoAnimationType (ZOOM_ONLY / ELASTIC_STICK)
- Renderizado con SDL_RenderGeometry para deformaciones
- Funciones de easing: easeOutElastic() y easeOutBack()
- Transformación de vértices con rotación y escala 2D
- Actualmente fijo en ELASTIC_STICK para testing

Limpieza adicional:
- Eliminado dbgtxt.h (no utilizado)
- Removidos SDL_Log de debug en HelpOverlay
- Comentada variable no usada en ShapeManager

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

source/ui/help_overlay.cpp

@@ -88,9 +88,6 @@ HelpOverlay::~HelpOverlay() {
 
 void HelpOverlay::toggle() {
     visible_ = !visible_;
-    SDL_Log("HelpOverlay::toggle() - visible=%s, box_pos=(%d,%d), box_size=%dx%d, physical=%dx%d",
-            visible_ ? "TRUE" : "FALSE", box_x_, box_y_, box_width_, box_height_,
-            physical_width_, physical_height_);
 }
 
 void HelpOverlay::initialize(SDL_Renderer* renderer, ThemeManager* theme_mgr, int physical_width, int physical_height, int font_size) {
@@ -103,12 +100,7 @@ void HelpOverlay::initialize(SDL_Renderer* renderer, ThemeManager* theme_mgr, in
     text_renderer_ = new TextRenderer();
     text_renderer_->init(renderer, "data/fonts/FunnelSans-Regular.ttf", font_size, true);
 
-    SDL_Log("HelpOverlay::initialize() - physical=%dx%d, font_size=%d", physical_width, physical_height, font_size);
-
     calculateBoxDimensions();
-
-    SDL_Log("HelpOverlay::initialize() - AFTER calculateBoxDimensions: box_pos=(%d,%d), box_size=%dx%d",
-            box_x_, box_y_, box_width_, box_height_);
 }
 
 void HelpOverlay::updatePhysicalWindowSize(int physical_width, int physical_height) {
@@ -135,11 +127,6 @@ void HelpOverlay::reinitializeFontSize(int new_font_size) {
 }
 
 void HelpOverlay::updateAll(int font_size, int physical_width, int physical_height) {
-    SDL_Log("HelpOverlay::updateAll() - INPUT: font_size=%d, physical=%dx%d",
-            font_size, physical_width, physical_height);
-    SDL_Log("HelpOverlay::updateAll() - BEFORE: box_pos=(%d,%d), box_size=%dx%d",
-            box_x_, box_y_, box_width_, box_height_);
-
     // Actualizar dimensiones físicas PRIMERO
     physical_width_ = physical_width;
     physical_height_ = physical_height;
@@ -154,9 +141,6 @@ void HelpOverlay::updateAll(int font_size, int physical_width, int physical_heig
 
     // Marcar textura para regeneración completa
     texture_needs_rebuild_ = true;
-
-    SDL_Log("HelpOverlay::updateAll() - AFTER: box_pos=(%d,%d), box_size=%dx%d",
-            box_x_, box_y_, box_width_, box_height_);
 }
 
 void HelpOverlay::calculateTextDimensions(int& max_width, int& total_height) {
@@ -246,15 +230,10 @@ void HelpOverlay::calculateTextDimensions(int& max_width, int& total_height) {
 }
 
 void HelpOverlay::calculateBoxDimensions() {
-    SDL_Log("HelpOverlay::calculateBoxDimensions() START - physical=%dx%d", physical_width_, physical_height_);
-
     // Calcular dimensiones necesarias según el texto
     int text_width, text_height;
     calculateTextDimensions(text_width, text_height);
 
-    SDL_Log("HelpOverlay::calculateBoxDimensions() - text_width=%d, text_height=%d, col1_width=%d, col2_width=%d",
-            text_width, text_height, column1_width_, column2_width_);
-
     // Usar directamente el ancho y altura calculados según el contenido
     box_width_ = text_width;
 
@@ -265,17 +244,11 @@ void HelpOverlay::calculateBoxDimensions() {
     // Centrar en pantalla
     box_x_ = (physical_width_ - box_width_) / 2;
     box_y_ = (physical_height_ - box_height_) / 2;
-
-    SDL_Log("HelpOverlay::calculateBoxDimensions() END - box_pos=(%d,%d), box_size=%dx%d, max_height=%d",
-            box_x_, box_y_, box_width_, box_height_, max_height);
 }
 
 void HelpOverlay::rebuildCachedTexture() {
     if (!renderer_ || !theme_mgr_ || !text_renderer_) return;
 
-    SDL_Log("HelpOverlay::rebuildCachedTexture() - Regenerando textura: box_size=%dx%d, box_pos=(%d,%d)",
-            box_width_, box_height_, box_x_, box_y_);
-
     // Destruir textura anterior si existe
     if (cached_texture_) {
         SDL_DestroyTexture(cached_texture_);
@@ -471,9 +444,6 @@ void HelpOverlay::render(SDL_Renderer* renderer) {
     int centered_x = viewport.x + (viewport.w - box_width_) / 2;
     int centered_y = viewport.y + (viewport.h - box_height_) / 2;
 
-    SDL_Log("HelpOverlay::render() - viewport=(%d,%d,%dx%d), centered_pos=(%d,%d), box_size=%dx%d",
-            viewport.x, viewport.y, viewport.w, viewport.h, centered_x, centered_y, box_width_, box_height_);
-
     // Renderizar la textura cacheada centrada en el viewport
     SDL_FRect dest_rect;
     dest_rect.x = static_cast<float>(centered_x);