feat: add EXE projects with versioned install configuration

- EXE project kind next to MSIX: formats.exe, new EXE projects, EXE app
  info (architecture, UpgradeCode), per-kind workspace; EXE builds and
  signing are still refused explicitly (#9).
- Install configuration tabs: registry grid, shortcuts and installer
  properties with formatted-text checks (#10).
- Per-version .isver files: version list, add dialog, lock/unlock,
  delete with .isver.bak backups, description (#11).
- Major/patch versions with cumulative patch checks and automatic kind
  selection (#12).
- 설치화면 tab: setup steps, theme and scripts per version (#13).
- Preferences: theme and display language (#14).
- 설치파일 tab as an Explorer-style tree: per-row add/remove, Windows
  folder install locations (FileRule.targetRoot), picked files placed
  with FileRule.sourceFolder, unsaved-rule file preview (#17).

Checks: cargo fmt/clippy/test, 82 frontend tests, Vite build and the
msix-studio build pass. npm ci, GUI click tests and real EXE builds were
not run.

Refs #9 #10 #11 #12 #13 #14 #17

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

src/crates/package-infra/tests/workflow.rs

@@ -19,7 +19,7 @@ fn png(path: &Path, size: u32) {
 fn fixture() -> (tempfile::TempDir, PathBuf) {
     let temp = tempfile::tempdir().unwrap();
     let path = temp.path().join("InstallerProject.isproj");
-    let mut doc = infra::create_project(&path).unwrap();
+    let mut doc = infra::create_project(&path, package_domain::ProjectKind::Msix).unwrap();
     let payload = temp.path().join("payload");
     fs::create_dir_all(payload.join("Assets")).unwrap();
     let mut pe = vec![0; 256];
@@ -233,6 +233,15 @@ fn schema_file_matches_rust_contract() {
     assert_eq!(actual, expected);
 }
 
+#[test]
+fn version_schema_file_matches_rust_contract() {
+    // `package-builder version-schema` emits this; it describes the EXE *.isver meta files.
+    let actual = serde_json::to_value(schemars::schema_for!(package_domain::ExeVersion)).unwrap();
+    let expected: serde_json::Value =
+        serde_json::from_str(include_str!("../../../schemas/exe-version.schema.json")).unwrap();
+    assert_eq!(actual, expected);
+}
+
 #[test]
 #[ignore = "Requires a real Windows SDK: set MSIX_TEST_MAKEAPPX and run --ignored"]
 fn real_sdk_packages_two_products_and_rejects_stale_plans() {
@@ -240,7 +249,8 @@ fn real_sdk_packages_two_products_and_rejects_stale_plans() {
     for name in ["FixtureAlpha", "FixtureBeta"] {
         let (temp, path) = fixture();
         let mut doc = infra::open_project(&path).unwrap();
-        doc.project.formats.msix.identity.name = format!("ExamplePublisher.{name}");
+        doc.project.formats.msix.as_mut().unwrap().identity.name =
+            format!("ExamplePublisher.{name}");
         doc.project.product.display_name = name.into();
         doc.local.make_appx = Some(tool.clone());
         doc.project.registry = serde_json::from_value(serde_json::json!([