docs: append performance patches to v1.5.5 changelogs

docs/changelog.html

@@ -184,6 +184,9 @@
             <li><strong>[Performance &mdash; Network Refactor]</strong> Refactored <code>QuestieLearnerComms</code>: reduced compression overhead (negligible size difference but massive CPU savings), slowed processing ticker to match output rate limits, and optimized duplicate detection to O(1).</li>
             <li><strong>[Performance &mdash; Arrow Closures]</strong> Hoisted heavy inner closures out of the hot <code>QuestieArrow:UpdateNearestTargets</code> loop to module-level functions, eliminating persistent memory allocation spikes and Garbage Collection (GC) pressure.</li>
             <li><strong>[Fix &mdash; Profiler Display]</strong> Fixed textual overlap and vertical spacing issues in the <code>QuestieProfiler</code> UI. Function names are now properly left-aligned, and horizontal spacing ensures metrics remain legible regardless of function name length.</li>
+            <li><strong>[Performance &mdash; Math Inlining]</strong> Removed <code>QuestieLib:Euclid</code> function call overhead from the minimap icon <code>FadeLogic</code> hot loop in favor of an inline Pythagorean distance check, reducing micro-stutters during movement.</li>
+            <li><strong>[Performance &mdash; Quest Tracker Bag Scans]</strong> Removed O(N) nested loops iterating over the entire character inventory in <code>TrackerLinePool:SetItem</code> and <code>QuestieQuest:CheckQuestSourceItem</code>, replacing them with native O(1) <code>GetItemCount(itemId)</code> queries. Completely eliminated thousands of <code>GetContainerItemInfo</code> calls.</li>
+            <li><strong>[Performance &mdash; Tracker Cooldown Throttling]</strong> Added a 5Hz (0.2s) execution throttle to the tracker quest item button <code>btn.OnUpdate</code> frame handler, dropping baseline <code>GetItemCooldown</code> API polls from over 6000 checks every few minutes down to a fraction of that load.</li>
         </ul>
 
         <hr>