refactor: rename RDReaderView -> RDEpubReaderView, update pod config and docs

- Rename source module from RDReaderView to RDEpubReaderView
- Move all source files from Sources/RDReaderView/ to Sources/RDEpubReaderView/
- Update podspec: RDReaderView.podspec -> RDEpubReaderView.podspec
- Update Podfile, demo project, and CocoaPods config for new pod name
- Delete old RDReaderView pod support files from ReadViewDemo/Pods
- Add new RDEpubReaderView pod support files
- Update documentation (API ref, architecture, UML, conventions, etc.)
- Add FixedLayoutRotationTests
- Update .gitignore: exclude .DS_Store, manual unpack backups, _ssoft-output

ReadViewDemo/ViewController.swift

@@ -1,5 +1,5 @@
 import UIKit
-import RDReaderView
+import RDEpubReaderView
 
 final class ViewController: UIViewController {
     private struct DemoBook: Equatable {
@@ -10,12 +10,12 @@ final class ViewController: UIViewController {
 
     private struct LaunchAutomationPlan {
         let bookTitleQuery: String
-        let displayType: RDReaderView.DisplayType?
+        let displayType: RDEpubReaderView.DisplayType?
         let pageNumber: Int?
-        let displaySequence: [RDReaderView.DisplayType]
+        let displaySequence: [RDEpubReaderView.DisplayType]
         let stepDelay: TimeInterval
 
-        nonisolated private static func parseDisplayType(_ rawValue: String) -> RDReaderView.DisplayType? {
+        nonisolated private static func parseDisplayType(_ rawValue: String) -> RDEpubReaderView.DisplayType? {
             switch rawValue.lowercased() {
             case "pagecurl", "curl":
                 return .pageCurl
@@ -328,7 +328,7 @@ final class ViewController: UIViewController {
     ) -> (report: BookValidationReport, diagnostics: [String]) {
         let fileExtension = book.fileURL.pathExtension.lowercased()
         if fileExtension == "txt" {
-            let builder = RDPlainTextBookBuilder()
+            let builder = RDEpubPlainTextBookBuilder()
             do {
                 let textBook = try builder.build(textFileURL: book.fileURL, pageSize: pageSize, style: style)
                 let passed = !textBook.pages.isEmpty && !textBook.chapters.isEmpty
@@ -646,8 +646,8 @@ final class ViewController: UIViewController {
         _ book: DemoBook,
         configuration: RDEPUBReaderConfiguration = .default,
         automationPlan: LaunchAutomationPlan? = nil
-    ) -> RDURLReaderController {
-        let controller = RDURLReaderController(bookURL: book.fileURL, epubConfiguration: configuration)
+    ) -> RDEpubURLReaderController {
+        let controller = RDEpubURLReaderController(bookURL: book.fileURL, epubConfiguration: configuration)
         controller.title = book.title
 
         if let navigationController {