fix(editor): update message preview bitmap depth to 8-bit indexed format

- Changed the bitmap depth for message previews from 64 to 8 to support indexed palette mode.
- Updated logging to reflect the new depth in message preview creation.
- Enhanced Bitmap class with a new method to update surface pixels, ensuring proper pixel data handling in rendering.

Benefits:
- Improves compatibility with indexed palette formats in message rendering.
- Enhances the clarity of logging for bitmap creation processes.

src/app/editor/message/message_editor.cc

@@ -419,14 +419,14 @@ void MessageEditor::DrawMessagePreview() {
     LOG_DEBUG("MessageEditor", "Updated message preview bitmap (size: %zu) and queued texture update",
               message_preview_.current_preview_data_.size());
   } else {
-    // Create bitmap and queue texture creation
+    // Create bitmap and queue texture creation with 8-bit indexed depth
     current_font_gfx16_bitmap_.Create(kCurrentMessageWidth, kCurrentMessageHeight, 
-                                     64, message_preview_.current_preview_data_);
+                                     8, message_preview_.current_preview_data_);
     current_font_gfx16_bitmap_.SetPalette(font_preview_colors_);
     gfx::Arena::Get().QueueTextureCommand(
         gfx::Arena::TextureCommandType::CREATE, &current_font_gfx16_bitmap_);
     
-    LOG_INFO("MessageEditor", "Created message preview bitmap (%dx%d) and queued texture creation",
+    LOG_INFO("MessageEditor", "Created message preview bitmap (%dx%d) with 8-bit depth and queued texture creation",
              kCurrentMessageWidth, kCurrentMessageHeight);
   }
 }

src/app/editor/message/message_editor.h

@@ -23,7 +23,7 @@ constexpr int kGfxFont = 0x70000;  // 2bpp format
 constexpr int kCharactersWidth = 0x74ADF;
 constexpr int kNumMessages = 396;
 constexpr int kFontGfxMessageSize = 128;
-constexpr int kFontGfxMessageDepth = 64;
+constexpr int kFontGfxMessageDepth = 8;  // Fixed: Must be 8 for indexed palette mode
 constexpr int kFontGfx16Size = 172 * 4096;
 
 constexpr uint8_t kBlockTerminator = 0x80;