fix: address Copilot PR review feedback

- Improve comment placement in richtext_plan.md for better flow
- Remove redundant parentheses in UpdatableView.swift for code consistency

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: graycreate

.plan/richtext_plan.md

@@ -63,8 +63,6 @@
 ### 整体流程
 
 ```
-> `RenderMetadata` 用于记录渲染耗时、图片资源等信息；`html.md5` 由 `String+Markdown.swift` 提供的扩展负责生成缓存键。
-
 ```swift
 struct RenderMetadata {
     let generatedAt: Date
@@ -73,6 +71,9 @@ struct RenderMetadata {
     let cacheHit: Bool
 }
 ```
+
+> `RenderMetadata` 用于记录渲染耗时、图片资源等信息；`html.md5` 由 `String+Markdown.swift` 提供的扩展负责生成缓存键。
+
 V2EX API Response (HTML)
          ↓
     SwiftSoup 解析

V2er/View/Widget/Updatable/UpdatableView.swift

@@ -131,7 +131,7 @@ struct UpdatableView<Content: View>: View {
             Task {
                 await onRefresh?()
                 // Decide delay (ms): 1200 if we had/now have online stats so users can notice updates; otherwise 0.
-                let hasOnlineStatsNow = (onlineStats != nil)
+                let hasOnlineStatsNow = onlineStats != nil
                 let delayMs = (hadOnlineStatsBefore || hasOnlineStatsNow) ? 1000 : 0
                 runInMain(delay: delayMs) {
                     withAnimation {