chore(dsl): drop stale cache comments

app/src/main/java/com/example/research/ui/article/DslAnnotatedParser.kt

@@ -70,11 +70,6 @@ object DslAnnotatedParser {
         val endIndex: Int
     )
 
-    // Cache for applyLazyRefs results to avoid recreating AnnotatedString with links
-    // Size: 32 blocks - covers typical visible + prefetch range in LazyColumn
-    // Memory estimate: ~20KB per block average (AnnotatedString with LinkAnnotations)
-    // Total: ~640KB worst case
-    // LRU eviction automatic via LruCache
     private val refCache = object : androidx.collection.LruCache<Pair<DslBlock, Int>, AnnotatedString>(32) {
         override fun sizeOf(key: Pair<DslBlock, Int>, value: AnnotatedString): Int = 1
     }