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/ReaderController/RDEPUBReaderEnvironment.swift

@@ -46,10 +46,11 @@ final class RDEPUBReaderEnvironment {
         configuration: RDEPUBReaderConfiguration,
         pageSize: CGSize
     ) -> RDEPUBTextLayoutConfig {
-        RDEPUBTextLayoutConfig(
+        let layoutContext = currentLayoutContext(configuration: configuration)
+        return RDEPUBTextLayoutConfig(
             frameWidth: max(pageSize.width, 1),
             frameHeight: max(pageSize.height, 1),
-            edgeInsets: configuration.reflowableContentInsets,
+            edgeInsets: layoutContext.safeReflowableContentInsets,
             numberOfColumns: configuration.numberOfColumns,
             columnGap: configuration.columnGap,
             avoidOrphans: false,