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/ReaderController/ChapterRuntime/RDEPUBBackgroundTrace.swift

@@ -1,22 +1,30 @@
 import Foundation
 
 enum RDEPUBBackgroundTrace {
+
     static func log(_ scope: String, _ message: String) {
+
         let threadRole = Thread.isMainThread ? "main" : "bg"
+
         let threadName = resolvedThreadName()
+
         let queueLabel = resolvedQueueLabel()
         print("[EPUB][\(scope)][\(threadRole)][queue=\(queueLabel)][thread=\(threadName)] \(message)")
     }
 
     static func measure<T>(_ scope: String, _ message: String, work: () throws -> T) rethrows -> T {
+
         let startedAt = CFAbsoluteTimeGetCurrent()
         log(scope, "START \(message)")
         do {
+
             let result = try work()
+
             let elapsedMs = Int((CFAbsoluteTimeGetCurrent() - startedAt) * 1000)
             log(scope, "END \(message) elapsedMs=\(elapsedMs)")
             return result
         } catch {
+
             let elapsedMs = Int((CFAbsoluteTimeGetCurrent() - startedAt) * 1000)
             log(scope, "FAIL \(message) elapsedMs=\(elapsedMs) error=\(error)")
             throw error
@@ -24,12 +32,15 @@ enum RDEPUBBackgroundTrace {
     }
 
     private static func resolvedThreadName() -> String {
+
         if let name = Thread.current.name, !name.isEmpty {
             return name
         }
+
         if Thread.isMainThread {
             return "main"
         }
+
         return String(describing: Unmanaged.passUnretained(Thread.current).toOpaque())
     }