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

Sources/RDEpubReaderView/EPUBCore/CFI/RDEPUBCFICompatibility.swift

@@ -0,0 +1,29 @@
+import Foundation
+
+public enum RDEPUBCFICompatibility {
+    public static func parseLossy(_ rawValue: String?) -> RDEPUBCFI? {
+        try? RDEPUBCFIParser.parse(rawValue)
+    }
+
+    public static func parseRangeLossy(_ rawValue: String?) -> RDEPUBCFIRange? {
+        if let parsed = try? RDEPUBCFIParser.parseRange(rawValue) {
+            return parsed
+        }
+
+        guard let rawValue,
+              !rawValue.isEmpty else {
+            return nil
+        }
+
+        let separators = ["..", "-"]
+        let separator = separators.first(where: { rawValue.contains($0) })
+        guard let separator else { return nil }
+        let parts = rawValue.components(separatedBy: separator)
+        guard parts.count == 2,
+              let start = parseLossy(parts[0]),
+              let end = parseLossy(parts[1]) else {
+            return nil
+        }
+        return RDEPUBCFIRange(parent: nil, start: start, end: end)
+    }
+}