feat(privacy-host): add signed native calendar contacts and reminders host

Add the owner-only AF_UNIX Reyna CLI privacy host, strict signed-app installation, and typed native routing for Calendar, Contacts, and Reminders.\n\nAdd bounded system-status paths and config-only direct local-service wrappers. Preserve MacMiniMCP pending explicit cutover approval.\n\nApple Notes is intentionally deferred: no native Notes operations, Apple Events declaration, or Automation helper are included; legacy Notes handling remains untouched.

native/ReynaCLIHost/Package.swift

@@ -0,0 +1,41 @@
+// swift-tools-version: 6.0
+import PackageDescription
+
+let package = Package(
+    name: "ReynaCLIHost",
+    platforms: [.macOS(.v13)],
+    products: [
+        .executable(name: "ReynaCLIHost", targets: ["ReynaCLIHost"]),
+        .library(name: "ReynaCLIHostCore", targets: ["ReynaCLIHostCore"]),
+    ],
+    targets: [
+        .target(
+            name: "CSignalSupport",
+            path: "Sources/CSignalSupport",
+            publicHeadersPath: "include"
+        ),
+        .target(
+            name: "ReynaCLIHostCore",
+            dependencies: ["CSignalSupport"],
+            path: "Sources/ReynaCLIHostCore",
+            linkerSettings: [
+                .linkedFramework("EventKit"),
+                .linkedFramework("Contacts")
+            ]
+        ),
+        .executableTarget(
+            name: "ReynaCLIHost",
+            dependencies: ["ReynaCLIHostCore", "CSignalSupport"],
+            path: "Sources/ReynaCLIHost",
+            linkerSettings: [
+                .linkedFramework("EventKit"),
+                .linkedFramework("Contacts")
+            ]
+        ),
+        .testTarget(
+            name: "ReynaCLIHostTests",
+            dependencies: ["ReynaCLIHostCore"],
+            path: "Tests/ReynaCLIHostTests"
+        ),
+    ]
+)