fix(m9): link ICCeryCore statically so the app launches standalone (#117)

When the app and test bundles share the local ICCeryCore package, Xcode
builds it as a dynamic package-product framework that is not embedded
in ICCery.app — the app crashes in dyld at launch when run outside the
test host (macOS 12 VM crash, run 31985 products). Declare the product
.static so each consumer links it directly.

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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

Packages/ICCeryCore/Package.swift

@@ -5,7 +5,10 @@ let package = Package(
     name: "ICCeryCore",
     platforms: [.macOS(.v12)],
     products: [
-        .library(name: "ICCeryCore", targets: ["ICCeryCore"]),
+        // Static so app + test bundles each link ICCeryCore directly —
+        // a dynamic package product framework is not embedded in the
+        // .app and dyld kills the app at launch on macOS 12 (#117).
+        .library(name: "ICCeryCore", type: .static, targets: ["ICCeryCore"]),
     ],
     targets: [
         .target(name: "ICCeryCore"),

Tests/ICCeryCoreTests/ProcessRunSupportTests.swift

@@ -21,7 +21,9 @@ final class ProcessRunSupportTests: XCTestCase {
             setRunning: { running.append($0) },
             resetLog: { resets += 1 },
             onLog: { batch in
-                MainActor.assertIsolated()
+                // MainActor.assertIsolated() needs Swift 5.9; the runner is
+                // on Xcode 14.2 (Swift 5.7) (#115).
+                XCTAssertTrue(Thread.isMainThread)
                 received.append(contentsOf: batch)
             }
         ) { onLog in