feat: add prerequisites, offline prerequisite setup and version tabs

- EXE versions: prerequisite list with the built-in catalog, custom
  installers, download link checks and install file analysis; entries
  are added by the user (no automatic adding), one "추가" dialog with
  기본 목록 / 직접 추가 tabs
- offline prerequisite setup: single exe made from PrerequisiteSetup.exe
  (Windows task dialog, no prerequisites) plus every installer, hash
  checked before, while and after appending; optional WebView2 Runtime
  chosen in the save dialog; replaces an existing file only after the
  user agrees (CLI --replace)
- desktop: progress popup with 생성위치 열기, save dialog fix for
  verbatim paths, EXE 서명 and 설치파일 생성 as version tabs, start
  screen 도구 › 서명하기 placeholder
- CLAUDE.md: results are overwritten only with the user's consent
- test kit and scripts for Windows Sandbox and Hyper-V checks

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

.claude/skills/msix-integration-test/SKILL.md

@@ -25,7 +25,7 @@ Get-ChildItem 'C:\Program Files (x86)\Windows Kits\10\bin\*\x64\makeappx.exe' |
 
 ## 2. 실행
 
-`D:\networkSetup\src`에서. 실행 중인 `msix-studio.exe`/`tauri dev`는 종료한다.
+`D:\networkSetup\src`에서. 실행 중인 `InstallerStudio.exe`/`tauri dev`는 종료한다.
 
 ```powershell
 $env:MSIX_TEST_MAKEAPPX = '<makeappx.exe 절대 경로>'