From f7599784dfcf91a82f51a6c5713627a54835490b Mon Sep 17 00:00:00 2001
From: Wickedness <y2keui@nate.com>
Date: Sun, 5 Jul 2026 15:18:26 +0900
Subject: [PATCH] Validate battle UI icon PNG color mode

---
 scripts/verify-visual-asset-data.mjs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/scripts/verify-visual-asset-data.mjs b/scripts/verify-visual-asset-data.mjs
index c8a5615..c93f19f 100644
--- a/scripts/verify-visual-asset-data.mjs
+++ b/scripts/verify-visual-asset-data.mjs
@@ -54,6 +54,9 @@ function validateBattleUiIconAtlas(errors, manifest) {
   if (dimensions.width !== expectedWidth || dimensions.height !== expectedHeight) {
     errors.push(`battle UI icon atlas is ${dimensions.width}x${dimensions.height}, expected ${expectedWidth}x${expectedHeight}`);
   }
+  if (dimensions.bitDepth !== 8 || dimensions.colorType !== 6) {
+    errors.push(`battle UI icon atlas must be 8-bit RGBA PNG color type 6, got bitDepth=${dimensions.bitDepth} colorType=${dimensions.colorType}`);
+  }
 
   const frameLimit = manifest.columns * manifest.rows;
   Object.entries(manifest.frames).forEach(([key, frame]) => {
@@ -129,7 +132,9 @@ function readPngDimensions(path) {
 
   return {
     width: bytes.readUInt32BE(16),
-    height: bytes.readUInt32BE(20)
+    height: bytes.readUInt32BE(20),
+    bitDepth: bytes[24],
+    colorType: bytes[25]
   };
 }