Add iPad support, auto-pinning, and comprehensive logging

- Adaptive iPhone/iPad layout with NavigationSplitView sidebar
- Auto-detect SSL-pinned domains, fall back to passthrough
- Certificate install via local HTTP server (Safari profile flow)
- App Group-backed CA, per-domain leaf cert LRU cache
- DB-backed config repository, Darwin notification throttling
- Rules engine, breakpoint rules, pinned domain tracking
- os.Logger instrumentation across tunnel/proxy/mitm/capture/cert/rules/db/ipc/ui
- Fix dyld framework embed, race conditions, thread safety

ProxyCore/Sources/DataLayer/Models/CapturedTraffic.swift

@@ -117,6 +117,26 @@ extension CapturedTraffic {
         return dict
     }
 
+    public func requestHeaderValue(named name: String) -> String? {
+        HTTPBodyDecoder.headerValue(named: name, in: decodedRequestHeaders)
+    }
+
+    public func responseHeaderValue(named name: String) -> String? {
+        HTTPBodyDecoder.headerValue(named: name, in: decodedResponseHeaders)
+    }
+
+    public var decodedResponseBodyData: Data? {
+        HTTPBodyDecoder.decodedBodyData(from: responseBody, headers: decodedResponseHeaders)
+    }
+
+    public var searchableResponseBodyText: String? {
+        HTTPBodyDecoder.searchableText(from: responseBody, headers: decodedResponseHeaders)
+    }
+
+    public var responseBodyDecodingHint: String {
+        HTTPBodyDecoder.decodingHint(for: responseBody, headers: decodedResponseHeaders)
+    }
+
     public var decodedQueryParameters: [String: String] {
         guard let data = queryParameters?.data(using: .utf8),
               let dict = try? JSONDecoder().decode([String: String].self, from: data) else {