chore(release): v0.2.1

Ships the fixes from #13: TOML integer config tolerance with visible parse
errors (#9), SMC float write-verification tolerance (#11), and argv[0]-free
daemon install (#8/#12).

Author: harryisfish

Sources/PolicyEngine/PolicyEngine.swift

@@ -1,7 +1,7 @@
 import Foundation
 
 public enum PolicyEngine {
-    public static let version = "0.2.0"
+    public static let version = "0.2.1"
 }
 
 public protocol PolicyClock: Sendable {

Sources/SMCtlProtocol/SMCtlProtocol.swift

@@ -1,7 +1,7 @@
 import Foundation
 
 public enum SMCtlProtocolInfo {
-    public static let version = "0.2.0"
+    public static let version = "0.2.1"
     public static let machServiceName = "one.leaper.smctl.daemon"
 
     /// Numeric-component semver comparison, tolerant of a leading "v".