Protocol: add TypeBox-driven Swift generator

apps/macos/Sources/ClawdisProtocol/AnyCodable.swift

@@ -0,0 +1,41 @@
+import Foundation
+
+/// Lightweight `Codable` wrapper that round-trips heterogeneous JSON payloads.
+/// Marked `@unchecked Sendable` because it can hold reference types.
+struct AnyCodable: Codable, @unchecked Sendable {
+    let value: Any
+
+    init(_ value: Any) { self.value = value }
+
+    init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let intVal = try? container.decode(Int.self) { self.value = intVal; return }
+        if let doubleVal = try? container.decode(Double.self) { self.value = doubleVal; return }
+        if let boolVal = try? container.decode(Bool.self) { self.value = boolVal; return }
+        if let stringVal = try? container.decode(String.self) { self.value = stringVal; return }
+        if container.decodeNil() { self.value = NSNull(); return }
+        if let dict = try? container.decode([String: AnyCodable].self) { self.value = dict; return }
+        if let array = try? container.decode([AnyCodable].self) { self.value = array; return }
+        throw DecodingError.dataCorruptedError(
+            in: container,
+            debugDescription: "Unsupported type")
+    }
+
+    func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self.value {
+        case let intVal as Int: try container.encode(intVal)
+        case let doubleVal as Double: try container.encode(doubleVal)
+        case let boolVal as Bool: try container.encode(boolVal)
+        case let stringVal as String: try container.encode(stringVal)
+        case is NSNull: try container.encodeNil()
+        case let dict as [String: AnyCodable]: try container.encode(dict)
+        case let array as [AnyCodable]: try container.encode(array)
+        default:
+            let context = EncodingError.Context(
+                codingPath: encoder.codingPath,
+                debugDescription: "Unsupported type")
+            throw EncodingError.invalidValue(self.value, context)
+        }
+    }
+}