feat: chapter runtime refactoring and related updates

- Refactor chapter runtime: replace window coordinator/snapshot with warmup orchestrator
- Update EPUB core: parser, reading session, JS bridge, navigator layout
- Update reader controller: data source, location resolution, persistence
- Update chapter runtime: data cache, loader, runtime store, disk cache, warmup orchestrator
- Remove deprecated navigation state machine and pagination state
- Update text rendering: book cache, HTML normalizer
- Update UI: text content view, dark image adjuster, text selection controller
- Update settings and reader configuration
- Add CODE_REVIEW.md and AUDIT_FINAL.md documentation
- Update pod dependencies (remove SSAlertSwift, SnapKit)
- Update podspec and pod configuration files

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

Sources/RDReaderView/EPUBUI/RDURLReaderController.swift

@@ -154,11 +154,18 @@ public final class RDURLReaderController: UIViewController {
             let bookTitle = bookURL.deletingPathExtension().lastPathComponent
             let pageSize = currentTextPageSize()
             let renderStyle = currentTextRenderStyle()
+            let safeInsets = view.safeAreaInsets
+            let edgeInsets = UIEdgeInsets(
+                top: max(epubConfiguration.reflowableContentInsets.top, safeInsets.top),
+                left: max(epubConfiguration.reflowableContentInsets.left, safeInsets.left),
+                bottom: max(epubConfiguration.reflowableContentInsets.bottom, safeInsets.bottom),
+                right: max(epubConfiguration.reflowableContentInsets.right, safeInsets.right)
+            )
             let builder = RDPlainTextBookBuilder(
                 layoutConfig: RDEPUBTextLayoutConfig(
                     frameWidth: pageSize.width,
                     frameHeight: pageSize.height,
-                    edgeInsets: epubConfiguration.reflowableContentInsets,
+                    edgeInsets: edgeInsets,
                     numberOfColumns: 1,
                     columnGap: 20,
                     avoidOrphans: false,