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>

ReadViewDemo/Pods/SnapKit/Sources/ConstraintItem.swift

@@ -1,61 +0,0 @@
-//
-//  SnapKit
-//
-//  Copyright (c) 2011-Present SnapKit Team - https://github.com/SnapKit
-//
-//  Permission is hereby granted, free of charge, to any person obtaining a copy
-//  of this software and associated documentation files (the "Software"), to deal
-//  in the Software without restriction, including without limitation the rights
-//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-//  copies of the Software, and to permit persons to whom the Software is
-//  furnished to do so, subject to the following conditions:
-//
-//  The above copyright notice and this permission notice shall be included in
-//  all copies or substantial portions of the Software.
-//
-//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-//  THE SOFTWARE.
-
-#if canImport(UIKit)
-    import UIKit
-#else
-    import AppKit
-#endif
-
-
-public final class ConstraintItem {
-    
-    internal weak var target: AnyObject?
-    internal let attributes: ConstraintAttributes
-    
-    internal init(target: AnyObject?, attributes: ConstraintAttributes) {
-        self.target = target
-        self.attributes = attributes
-    }
-    
-    internal var layoutConstraintItem: LayoutConstraintItem? {
-        return self.target as? LayoutConstraintItem
-    }
-    
-}
-
-public func ==(lhs: ConstraintItem, rhs: ConstraintItem) -> Bool {
-    // pointer equality
-    guard lhs !== rhs else {
-        return true
-    }
-    
-    // must both have valid targets and identical attributes
-    guard let target1 = lhs.target,
-          let target2 = rhs.target,
-          target1 === target2 && lhs.attributes == rhs.attributes else {
-            return false
-    }
-    
-    return true
-}