feat: 交互协调器拆分、附件提示、暗色图片适配、选区放大镜及文档清理

- 拆分 ContentDelegates/TextContentView 为独立协调器（InteractionCoordinator、LocationResolution、ExternalLinks、AttachmentTooltip）
- 新增 RDEPUBAttachmentTooltipView/OverlayView 附件气泡提示
- 新增 RDEPUBDarkImageAdjuster 暗色模式图片亮度适配
- 新增 RDEPUBSelectionLoupeView 选区放大镜
- 新增 MetadataParseWorker/CancellationController 元数据解析取消机制
- 重构 PresentationRuntime/PaginationCoordinator 精简职责
- 优化 ChapterLoader/WarmupOrchestrator 异步章节加载
- CFI 模块微调与 NoteModels 更新
- 清理冗余文档，更新架构/UML/业务逻辑文档

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

Sources/RDReaderView/EPUBTextRendering/Pagination/RDEPUBTextPaginationSupport.swift

@@ -17,15 +17,3 @@ extension NSAttributedString {
         rd_paginatedFrames(size: size).map(\.contentRange)
     }
 }
-
-extension UIColor {
-
-    var ss_cssString: String {
-        var red: CGFloat = 0
-        var green: CGFloat = 0
-        var blue: CGFloat = 0
-        var alpha: CGFloat = 0
-        getRed(&red, green: &green, blue: &blue, alpha: &alpha)
-        return String(format: "rgba(%d, %d, %d, %.3f)", Int(red * 255), Int(green * 255), Int(blue * 255), alpha)
-    }
-}

Sources/RDReaderView/EPUBTextRendering/RDEPUBTextIndexTable.swift

@@ -102,8 +102,8 @@ public struct RDEPUBTextIndexTable {
     }
 
     public func anchor(for location: RDEPUBLocation) -> RDEPUBTextAnchor? {
-        if let cfi = RDEPUBCFICompatibility.parseLossy(location.cfi),
-           let anchor = anchor(for: cfi) {
+        if let cfiRange = RDEPUBCFICompatibility.parseRangeLossy(location.rangeCFI),
+           let anchor = anchor(for: cfiRange.start) {
             return anchor
         }
 
@@ -111,6 +111,11 @@ public struct RDEPUBTextIndexTable {
             return anchor
         }
 
+        if let cfi = RDEPUBCFICompatibility.parseLossy(location.cfi),
+           let anchor = anchor(for: cfi) {
+            return anchor
+        }
+
         guard let chapterIndex = hrefToChapterIndex[location.href],
               let fileIndex = hrefToFileIndex[location.href] else { return nil }
         let fragments = fragmentOffsetsByHref[location.href] ?? [:]

Sources/RDReaderView/EPUBTextRendering/Typesetter/RDEPUBStyleSheetComposer.swift

@@ -134,8 +134,8 @@ struct RDEPUBStyleSheetComposer {
     }
 
     private static func darkCSS(style: RDEPUBTextRenderStyle) -> String {
-        let background = style.backgroundColor?.ss_cssString ?? "rgba(0, 0, 0, 1.000)"
-        let text = style.textColor?.ss_cssString ?? "rgba(255, 255, 255, 1.000)"
+        let background = style.backgroundColor?.rd_cssString ?? "rgba(0, 0, 0, 1.000)"
+        let text = style.textColor?.rd_cssString ?? "rgba(255, 255, 255, 1.000)"
         return RDEPUBAssetRepository.string(for: .wxReadDarkCSS) + "\n\n" + """
         html, body {
           background: \(background) !important;
@@ -149,8 +149,8 @@ struct RDEPUBStyleSheetComposer {
 
     private static func userCSS(style: RDEPUBTextRenderStyle) -> String {
         let lineHeight = max((style.font.lineHeight + style.lineSpacing) / max(style.font.lineHeight, 1), 1)
-        let text = style.textColor.map { "color: \($0.ss_cssString) !important;" } ?? ""
-        let background = style.backgroundColor.map { "background: \($0.ss_cssString) !important;" } ?? ""
+        let text = style.textColor.map { "color: \($0.rd_cssString) !important;" } ?? ""
+        let background = style.backgroundColor.map { "background: \($0.rd_cssString) !important;" } ?? ""
         return """
         html, body {
           font-family: "\(style.font.familyName)" !important;