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/EPUBTextRendering/BuildPipeline/RDEPUBBuildDiagnosticsReporter.swift

@@ -1,16 +1,18 @@
 import Foundation
 
-/// Builds diagnostics and human-readable summaries for a text book build.
 struct RDEPUBBuildDiagnosticsReporter {
+
     func phase7SemanticSummary(
         title: String?,
         diagnostics: [RDEPUBTextChapterPaginationDiagnostic]
     ) -> String? {
+
         guard !diagnostics.isEmpty else { return nil }
 
         let blockKinds = uniqueValues(from: diagnostics.flatMap(\.blockKinds))
         let semanticHints = uniqueValues(from: diagnostics.flatMap(\.semanticHints))
         let attachmentPlacements = uniqueValues(from: diagnostics.flatMap(\.attachmentPlacements))
+
         let note = diagnostics
             .flatMap(\.sampleNotes)
             .first(where: { $0.contains("semantic") || $0.contains("attachment") || $0.contains("block kinds") })
@@ -22,6 +24,7 @@ struct RDEPUBBuildDiagnosticsReporter {
             semanticHints.isEmpty ? nil : "hints [\(semanticHints.map(\.rawValue).joined(separator: ","))]",
             attachmentPlacements.isEmpty ? nil : "placements [\(attachmentPlacements.map(\.rawValue).joined(separator: ","))]"
         ].compactMap { $0 }
+
         if let note {
             parts.append(note)
         }
@@ -38,11 +41,14 @@ struct RDEPUBBuildDiagnosticsReporter {
             title: title,
             pageCount: pages.count,
             breakReasons: pages.map(\.metadata.breakReason),
+
             attachmentPageCount: pages.filter { !$0.metadata.attachmentKinds.isEmpty }.count,
+
             blockAdjustedPageCount: pages.filter { $0.metadata.breakReason == .blockBoundary || $0.metadata.breakReason == .attachmentBoundary }.count,
             blockKinds: uniqueValues(from: pages.flatMap(\.metadata.blockKinds)),
             semanticHints: uniqueValues(from: pages.flatMap(\.metadata.semanticHints)),
             attachmentPlacements: uniqueValues(from: pages.flatMap(\.metadata.attachmentPlacements)),
+
             sampleNotes: Array(pages.flatMap(\.metadata.diagnostics).prefix(4))
         )
     }