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/ProxyConfiguration.swift

@@ -0,0 +1,35 @@
+import Foundation
+import GRDB
+
+public struct ProxyConfiguration: Codable, FetchableRecord, MutablePersistableRecord, Sendable {
+    public static let databaseTableName = "proxy_configuration"
+
+    public var id: Int64
+    public var sslProxyingEnabled: Bool
+    public var blockListEnabled: Bool
+    public var breakpointEnabled: Bool
+    public var noCachingEnabled: Bool
+    public var dnsSpoofingEnabled: Bool
+    public var hideSystemTraffic: Bool
+    public var updatedAt: Double
+
+    public init(
+        id: Int64 = 1,
+        sslProxyingEnabled: Bool = false,
+        blockListEnabled: Bool = false,
+        breakpointEnabled: Bool = false,
+        noCachingEnabled: Bool = false,
+        dnsSpoofingEnabled: Bool = false,
+        hideSystemTraffic: Bool = false,
+        updatedAt: Double = Date().timeIntervalSince1970
+    ) {
+        self.id = id
+        self.sslProxyingEnabled = sslProxyingEnabled
+        self.blockListEnabled = blockListEnabled
+        self.breakpointEnabled = breakpointEnabled
+        self.noCachingEnabled = noCachingEnabled
+        self.dnsSpoofingEnabled = dnsSpoofingEnabled
+        self.hideSystemTraffic = hideSystemTraffic
+        self.updatedAt = updatedAt
+    }
+}