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/Shared/ProxyLogger.swift

@@ -0,0 +1,18 @@
+import Foundation
+import os
+
+/// Centralized logging for the proxy app. Uses os.Logger so logs appear in
+/// Console.app, Xcode debug console, and `xclog` capture — even from the extension process.
+public enum ProxyLogger {
+    public static let tunnel   = Logger(subsystem: "com.treyt.proxyapp", category: "tunnel")
+    public static let proxy    = Logger(subsystem: "com.treyt.proxyapp", category: "proxy")
+    public static let connect  = Logger(subsystem: "com.treyt.proxyapp", category: "connect")
+    public static let glue     = Logger(subsystem: "com.treyt.proxyapp", category: "glue")
+    public static let mitm     = Logger(subsystem: "com.treyt.proxyapp", category: "mitm")
+    public static let capture  = Logger(subsystem: "com.treyt.proxyapp", category: "capture")
+    public static let cert     = Logger(subsystem: "com.treyt.proxyapp", category: "cert")
+    public static let rules    = Logger(subsystem: "com.treyt.proxyapp", category: "rules")
+    public static let db       = Logger(subsystem: "com.treyt.proxyapp", category: "db")
+    public static let ipc      = Logger(subsystem: "com.treyt.proxyapp", category: "ipc")
+    public static let ui       = Logger(subsystem: "com.treyt.proxyapp", category: "ui")
+}