feat: EPUB阅读器搜索、注释、CFI模块及大书远距跳转优化

- 实现EPUB阅读器搜索功能及选中注释功能
- 优化CFI模块，修复代码审查发现的11个问题
- 实现大书远距目录跳转与后台补全优化方案
- 优化设置面板与章节运行时联动
- 重构及大量改进优化

Sources/RDReaderView/EPUBUI/Settings/RDEPUBReaderSettingsViewController.swift

@@ -1,33 +1,23 @@
 import UIKit
 
-// MARK: - 设置面板
-
-/// EPUB 阅读器的设置面板控制器
-/// 提供亮度、字号、行距、翻页方式、主题的调节功能
-/// 支持 iOS 13+ SF Symbols 和低版本文字回退
 final class RDEPUBReaderSettingsViewController: UIViewController {
-    // MARK: 回调闭包
 
-    /// 亮度变化回调（0.0 ~ 1.0）
     var onBrightnessChange: ((CGFloat) -> Void)?
-    /// 字号变化回调（pt 值）
+
     var onFontSizeChange: ((CGFloat) -> Void)?
-    /// 字体变化回调
+
     var onFontChoiceChange: ((RDEPUBReaderFontChoice) -> Void)?
-    /// 行距倍数变化回调
+
     var onLineHeightChange: ((CGFloat) -> Void)?
-    /// 栏数变化回调
+
     var onColumnCountChange: ((Int) -> Void)?
-    /// 翻页模式变化回调
+
     var onDisplayTypeChange: ((RDReaderView.DisplayType) -> Void)?
-    /// 主题变化回调
+
     var onThemeChange: ((RDEPUBReaderTheme) -> Void)?
-    /// 设置页面关闭回调
+
     var onDismiss: (() -> Void)?
 
-    // MARK: 主题预设枚举
-
-    /// 设置面板中的主题预设枚举，用于按钮显示和主题切换
     private enum ThemePreset: Int, CaseIterable {
         case light
         case yellow
@@ -60,20 +50,30 @@ final class RDEPUBReaderSettingsViewController: UIViewController {
     }
 
     private let scrollView = UIScrollView()
+
     private let contentStack: UIStackView = {
         let stackView = UIStackView()
         stackView.axis = .vertical
         stackView.spacing = 20
         return stackView
     }()
+
     private let brightnessSlider = UISlider()
+
     private let fontValueLabel = UILabel()
+
     private let decreaseFontButton = UIButton(type: .system)
+
     private let increaseFontButton = UIButton(type: .system)
+
     private let fontChoiceControl = UISegmentedControl(items: RDEPUBReaderFontChoice.allCases.map(\.displayName))
+
     private let lineHeightControl = UISegmentedControl(items: ["紧凑", "标准", "宽松"])
+
     private let columnCountControl = UISegmentedControl(items: ["单栏", "双栏"])
+
     private let displayTypeControl = UISegmentedControl(items: ["仿真", "横滑", "竖滑"])
+
     private let themeStackView: UIStackView = {
         let stackView = UIStackView()
         stackView.axis = .horizontal
@@ -81,11 +81,11 @@ final class RDEPUBReaderSettingsViewController: UIViewController {
         stackView.spacing = 12
         return stackView
     }()
+
     private var themeButtons: [UIButton] = []
 
-    /// 行距选项对应的倍数值（紧凑 1.3、标准 1.6、宽松 1.9）
     private let lineHeightValues: [CGFloat] = [1.3, 1.6, 1.9]
-    /// 当前配置的本地副本，修改后通过回调通知控制器
+
     private var currentConfiguration: RDEPUBReaderConfiguration
 
     init(configuration: RDEPUBReaderConfiguration, brightness: CGFloat) {