fix(tags): categorizeTags 防禦 null/非字串 name 項目

對 null/非物件 tag 與非字串 name 一律歸為 skip,避免存取 tag.name 或比對時出錯。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/tags.js

@@ -18,10 +18,12 @@ export function categorizeTags(tags, releaseTagNames) {
   const keep = new Set(releaseTagNames)
 
   return tags.map((tag) => {
-    if (isEmptyOrNull(tag.name)) {
+    // 防禦 null/非物件 tag 與非字串 name:一律歸為 skip,避免後續存取或比對時出錯。
+    const name = tag?.name
+    if (typeof name !== 'string' || isEmptyOrNull(name)) {
       return { tag, action: 'skip' }
     }
-    if (keep.has(tag.name)) {
+    if (keep.has(name)) {
       return { tag, action: 'keep' }
     }
     return { tag, action: 'delete' }