test(core): Swift oracle — the filius-ipad core built on Linux as the reference

tools/swift-oracle builds the unchanged Swift runtime (pinned 3b5ded0)
in Docker and replays JSON scenarios; the TypeScript engine must produce
the same trace events, results and end state. Five scenarios, 884
events, identical.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/core/tsconfig.json

@@ -1,9 +1,9 @@
 {
   "extends": "../../tsconfig.base.json",
   "compilerOptions": {
-    "rootDir": ".",
+    "rootDir": "src",
     "outDir": "dist",
     "types": []
   },
-  "include": ["src", "test"]
+  "include": ["src"]
 }