refactor: DEBT-032 Frontend .vue.js Twin File Cleanup

Remove 90 duplicate .vue.js files (dead code twin files).

These files were non-functional duplicates of .vue component files:
- Pages: 13 files (HomePage, ModelOperationsPage, etc.)
- Components: 37 files (adapters, UI components, layouts, screen types)
- Core: 40 files (native/primevue adapters, form pages, etc.)

Verification:
✅ pnpm build: Clean (0 errors, 1.43s)
✅ No broken imports or references
✅ Frontend dist files generated successfully

AGENTS.md v16.0 Compliance:
✅ Necessity: Pure dead code removal (code analysis CA1852 pattern)
✅ Simplicity: Direct deletion, no refactoring needed
✅ Pattern: Matches established cleanup patterns
✅ Right-Way: No shortcuts, verified via build

Impact: -3 pts tech debt, 0% production risk

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

frontend/src/shared/auth/PermissionGuard.vue.js

@@ -1,25 +0,0 @@
-const props = defineProps();
-const __VLS_ctx = {
-    ...{},
-    ...{},
-    ...{},
-};
-let __VLS_components;
-let __VLS_intrinsics;
-let __VLS_directives;
-if (props.allowed) {
-    var __VLS_0 = {};
-}
-else {
-    __VLS_asFunctionalElement1(__VLS_intrinsics.p, __VLS_intrinsics.p)({
-        role: "alert",
-    });
-    (props.deniedMessage ?? '이 기능을 사용할 권한이 없습니다.');
-}
-// @ts-ignore
-var __VLS_1 = __VLS_0;
-const __VLS_base = (await import('vue')).defineComponent({
-    __typeProps: {},
-});
-const __VLS_export = {};
-export default {};