feat: Update dungeon coordinate conversion to use 8x8 pixel tiles and replace DungeonEditor with DungeonEditorV2

src/app/editor/dungeon/dungeon_canvas_viewer.cc

@@ -480,18 +480,20 @@ void DungeonCanvasViewer::RenderPotObjects(const zelda3::Room& room) {
 std::pair<int, int> DungeonCanvasViewer::RoomToCanvasCoordinates(int room_x,
                                                                 int room_y) const {
   // Convert room coordinates (tile units) to canvas coordinates (pixels)
+  // Dungeon tiles are 8x8 pixels (not 16x16!)
   // Account for canvas scaling and offset
   float scale = canvas_.global_scale();
   int offset_x = static_cast<int>(canvas_.drawn_tile_position().x);
   int offset_y = static_cast<int>(canvas_.drawn_tile_position().y);
   
-  return {static_cast<int>((room_x * 16 + offset_x) * scale), 
-          static_cast<int>((room_y * 16 + offset_y) * scale)};
+  return {static_cast<int>((room_x * 8 + offset_x) * scale), 
+          static_cast<int>((room_y * 8 + offset_y) * scale)};
 }
 
 std::pair<int, int> DungeonCanvasViewer::CanvasToRoomCoordinates(int canvas_x,
                                                                 int canvas_y) const {
   // Convert canvas coordinates (pixels) to room coordinates (tile units)
+  // Dungeon tiles are 8x8 pixels (not 16x16!)
   // Account for canvas scaling and offset
   float scale = canvas_.global_scale();
   int offset_x = static_cast<int>(canvas_.drawn_tile_position().x);
@@ -499,8 +501,8 @@ std::pair<int, int> DungeonCanvasViewer::CanvasToRoomCoordinates(int canvas_x,
   
   if (scale <= 0.0f) scale = 1.0f; // Prevent division by zero
   
-  return {static_cast<int>((canvas_x / scale - offset_x) / 16), 
-          static_cast<int>((canvas_y / scale - offset_y) / 16)};
+  return {static_cast<int>((canvas_x / scale - offset_x) / 8), 
+          static_cast<int>((canvas_y / scale - offset_y) / 8)};
 }
 
 bool DungeonCanvasViewer::IsWithinCanvasBounds(int canvas_x, int canvas_y,

src/app/editor/dungeon/dungeon_object_interaction.cc

@@ -270,11 +270,13 @@ bool DungeonObjectInteraction::IsObjectInSelectBox(
 }
 
 std::pair<int, int> DungeonObjectInteraction::RoomToCanvasCoordinates(int room_x, int room_y) const {
-  return {room_x * 16, room_y * 16};
+  // Dungeon tiles are 8x8 pixels, convert room coordinates (tiles) to pixels
+  return {room_x * 8, room_y * 8};
 }
 
 std::pair<int, int> DungeonObjectInteraction::CanvasToRoomCoordinates(int canvas_x, int canvas_y) const {
-  return {canvas_x / 16, canvas_y / 16};
+  // Convert canvas pixels back to room coordinates (tiles)
+  return {canvas_x / 8, canvas_y / 8};
 }
 
 bool DungeonObjectInteraction::IsWithinCanvasBounds(int canvas_x, int canvas_y, int margin) const {

src/app/editor/dungeon/dungeon_renderer.cc

@@ -187,11 +187,13 @@ absl::Status DungeonRenderer::RefreshGraphics(int room_id, uint64_t palette_id,
 }
 
 std::pair<int, int> DungeonRenderer::RoomToCanvasCoordinates(int room_x, int room_y) const {
-  return {room_x * 16, room_y * 16};
+  // Dungeon tiles are 8x8 pixels, convert room coordinates (tiles) to pixels
+  return {room_x * 8, room_y * 8};
 }
 
 std::pair<int, int> DungeonRenderer::CanvasToRoomCoordinates(int canvas_x, int canvas_y) const {
-  return {canvas_x / 16, canvas_y / 16};
+  // Convert canvas pixels back to room coordinates (tiles)
+  return {canvas_x / 8, canvas_y / 8};
 }
 
 bool DungeonRenderer::IsWithinCanvasBounds(int canvas_x, int canvas_y, int margin) const {

src/app/editor/editor_manager.h

@@ -11,7 +11,7 @@
 #include "app/core/project.h"
 #include "app/editor/code/assembly_editor.h"
 #include "app/editor/code/memory_editor.h"
-#include "app/editor/dungeon/dungeon_editor.h"
+#include "app/editor/dungeon/dungeon_editor_v2.h"
 #include "app/editor/graphics/graphics_editor.h"
 #include "app/editor/graphics/palette_editor.h"
 #include "app/editor/graphics/screen_editor.h"
@@ -59,7 +59,7 @@ class EditorSet {
   }
 
   AssemblyEditor assembly_editor_;
-  DungeonEditor dungeon_editor_;
+  DungeonEditorV2 dungeon_editor_;
   GraphicsEditor graphics_editor_;
   MusicEditor music_editor_;
   OverworldEditor overworld_editor_;