diff --git a/.jules/bolt.md b/.jules/bolt.md
index 8f342ab..fd52a5d 100644
--- a/.jules/bolt.md
+++ b/.jules/bolt.md
@@ -3,3 +3,6 @@
 ## 2024-05-24 - O(N) Iteration in Cache Size Calculation
 **Learning:** Calculating dynamic capacity dynamically via `store.values.sumOf { it.sizeBytes }` effectively incurs an O(N) cost on every `put` because it runs when `trimToCapacity()` calls `dynamicCapacity`. When cache sizes get large, this causes O(N²) overall insertion performance and UI stutters.
 **Action:** Use an `AtomicLong` (O(1)) to track the running sum of cache size instead of dynamically iterating through the entire collection.
+## 2024-10-06 - O(N^2) Lookup Optimization in List
+**Learning:** Using `List.none { it.id == post.id }` within a loop creates an O(N^2) complexity because `none` iterates over the list which grows linearly.
+**Action:** Replace `List.none` or `List.contains` checks on growing collections with an O(1) `Set.add` tracking mechanism when maintaining uniqueness.
diff --git a/app/src/main/java/com/example/reddittube/data/DataRepository.kt b/app/src/main/java/com/example/reddittube/data/DataRepository.kt
index 90c2f6a..9015827 100644
--- a/app/src/main/java/com/example/reddittube/data/DataRepository.kt
+++ b/app/src/main/java/com/example/reddittube/data/DataRepository.kt
@@ -259,6 +259,7 @@ class DefaultDataRepository(private val context: Context) : DataRepository {
         val token = RedditOAuthHelper.getOrFetchAccessToken(context)
         if (token == null) { emit(SearchVideosResult(emptyList(), null)); return@flow }
         val results = mutableListOf<RedditPost>()
+        val seenIds = mutableSetOf<String>()
         var currentAfter = after
         var finalAfter: String? = null
         try {
@@ -276,7 +277,8 @@ class DefaultDataRepository(private val context: Context) : DataRepository {
                 for (i in 0 until children.length()) {
                     val childData = children.getJSONObject(i).optJSONObject("data") ?: continue
                     parseRedditPost(childData)?.let { post ->
-                        if (results.none { it.id == post.id }) {
+                        // Performance optimization: Avoid O(N^2) list search by using a Set for seen IDs
+                        if (seenIds.add(post.id)) {
                             results.add(post)
                         }
                     }
diff --git a/app/src/main/java/com/example/reddittube/ui/main/components/MinimalButton.kt b/app/src/main/java/com/example/reddittube/ui/main/components/MinimalButton.kt
index 056265a..8879150 100644
--- a/app/src/main/java/com/example/reddittube/ui/main/components/MinimalButton.kt
+++ b/app/src/main/java/com/example/reddittube/ui/main/components/MinimalButton.kt
@@ -16,7 +16,6 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.semantics.Role
 import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.semantics.Role
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp