feat: EPUB 阅读器搜索、选中注释、书签 chrome 状态及大量重构优化

- 新增 RDEPUBReaderSearchCoordinator 与 RDEPUBSelectionState 管理搜索和选中状态
- 新增 BookmarkChromeStateTests、NavigationBackwardTests、SelectionAnnotateTests 等 UI 测试
- 新增多个边界测试 epub 样本（损坏结构、空归档、缺失文件、流式外链验证）
- 重构阅读器 chrome 状态管理，统一 tool bar 与 search bar 交互
- 优化大书分页缓存策略（RDEPUBChapterSummaryDiskCache、RDEPUBPageCountCache）
- 移除废弃的 RDEPUBLocationConverter 和 RDEPUBPageBreakPolicy
- 更新 epub-bridge.js 与 JS bridge 通信协议
- 全面更新现有 UI 测试以适配新的 helper 和状态管理

ReadViewDemo/ReadViewDemoUITests/ReaderUITests/LocationPersistenceTests.swift

@@ -57,7 +57,7 @@ final class LocationPersistenceTests: XCTestCase {
 
         let paging = app.collectionViews[IDs.readerPaging]
         if paging.waitForExistence(timeout: 5) { paging.swipeLeft() }
-        app.waitForReaderState(containing: "page=", timeout: 5)
+        app.waitForDemoReaderState(timeout: 5, description: "page exists") { $0.page != nil }
 
         app.showReaderChromeIfNeeded()
         if app.buttons[IDs.readerSettings].waitForExistence(timeout: 3) { app.buttons[IDs.readerSettings].tap() }
@@ -70,6 +70,37 @@ final class LocationPersistenceTests: XCTestCase {
         app.launchAndOpenSampleBook()
         app.waitForReader(timeout: 12)
 
-        app.waitForReaderState(containing: "reader=opened", timeout: 8)
+        app.waitForDemoReaderState(timeout: 8, description: "reader=opened") { $0.isOpened }
+    }
+
+    func testBookmarkAndHighlightPersistAcrossReopen() throws {
+        app.launchAndOpenSampleBook(resetsReaderState: true)
+        app.waitForReader(timeout: 12)
+
+        app.showReaderChromeIfNeeded()
+        XCTAssertTrue(app.buttons[IDs.readerBookmark].waitForExistence(timeout: 3))
+        app.buttons[IDs.readerBookmark].tap()
+        app.waitForDemoReaderState(timeout: 5, description: "bookmarks=1") { $0.bookmarks == 1 }
+
+        app.hideReaderChromeIfNeeded()
+        let content = app.otherElements[IDs.readerSelectionText].firstMatch
+        XCTAssertTrue(content.waitForExistence(timeout: 5))
+        let start = content.coordinate(withNormalizedOffset: CGVector(dx: 0.2, dy: 0.5))
+        let end = content.coordinate(withNormalizedOffset: CGVector(dx: 0.55, dy: 0.5))
+        start.press(forDuration: 0.8, thenDragTo: end)
+        XCTAssertTrue(app.menuItems["高亮"].waitForExistence(timeout: 3))
+        app.menuItems["高亮"].tap()
+        app.waitForDemoReaderState(timeout: 8, description: "highlights=1") { $0.highlights == 1 }
+
+        app.showReaderChromeIfNeeded()
+        app.buttons[IDs.readerBack].tap()
+
+        app.launchAndOpenSampleBook(resetsReaderState: false)
+        app.waitForReader(timeout: 12)
+        let state = app.waitForDemoReaderState(timeout: 8, description: "bookmark/highlight restored") { state in
+            state.bookmarks == 1 && state.highlights == 1
+        }
+        XCTAssertEqual(state.bookmarks, 1)
+        XCTAssertEqual(state.highlights, 1)
     }
 }