feat: generate and verify MSIX registry hives

Closes #3

src/tests/verification-2026-10-22-registry.json

@@ -0,0 +1,28 @@
+{
+  "date": "2026-10-22",
+  "feature": "MSIX offline registry editor and packaging",
+  "rustWorkspace": { "command": "cargo test --locked --workspace", "passed": 20, "failed": 0, "ignoredSdkTestsRunSeparately": 1 },
+  "frontend": { "build": "passed", "testsPassed": 6, "testsFailed": 0, "nativeGuiClickTest": "notRun" },
+  "sdkIntegration": {
+    "command": "cargo test --locked -p package-infra --test workflow real_sdk_packages_two_products_and_rejects_stale_plans -- --ignored --nocapture",
+    "makeAppx": "C:\\Program Files (x86)\\Windows Kits\\10\\bin\\10.0.26100.0\\x64\\makeappx.exe",
+    "passed": true,
+    "productCount": 2
+  },
+  "runtimeProbe": {
+    "identity": "Baron.RegistryFeatureProbe20261022",
+    "buildId": "987b0d0f-e17b-43a7-8ad1-ffb7ea42d898",
+    "packagedProcess": true,
+    "valuesReadAndCompared": 7,
+    "types": ["REG_SZ", "REG_EXPAND_SZ", "REG_DWORD", "REG_QWORD", "REG_MULTI_SZ", "REG_BINARY"],
+    "views": ["64", "32"],
+    "passed": true,
+    "testPackageRemoved": true,
+    "hostRegistryTestKeyAbsent": true,
+    "evidenceRoot": "D:\\networkSetup\\output\\samples\\registry-feature-test",
+    "signedPackageSha256": "eff334f042528e8ab950f3b981896da42b86d0fa33312f09bdf9253406fc40aa"
+  },
+  "desktopExecutable": "D:\\networkSetup\\src\\target\\debug\\msix-studio.exe",
+  "egbimIsmRegistryImported": false,
+  "egbimSampleRebuilt": false
+}