초기 커밋: Phase 1 — 레지스트리 기반 컨텍스트 메뉴 + 핵심 변환 파이프라인

- Provider 추상화(IConverterProvider + ProviderCapability) — Available/RequiresExternal/ComingSoon 1급 시민
- 변환 구현: Magick(이미지·RAW·GIF·TIFF), HEIC/HEIF(libheif decode→Magick encode), PDF(PDFium), DOCX(Word COM 또는 LibreOffice 자동 감지)
- ComingSoon 스텁: HTML, HWP/HWPX (UI 노출, 컨텍스트 메뉴 등록 자동 제외)
- WPF + WPF-UI 4.3 Fluent 2 UI: 메인 창(드래그&드롭, Provider 카드), 변환 창(썸네일·옵션·진행률), 빠른 변환 진행 창, 진단 창
- 단일 EXE에 verb 라우팅: quick / dialog / register / unregister / diagnose / help
- HKCU SystemFileAssociations 기반 컨텍스트 메뉴 등록 (Win11 "추가 옵션 표시"에 노출)
- README, packaging/ Phase 2 placeholder 포함

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/EverythingToJpeg.App/EverythingToJpeg.App.csproj

@@ -0,0 +1,29 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net9.0-windows10.0.19041.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UseWPF>true</UseWPF>
+    <AssemblyName>EverythingToJpeg</AssemblyName>
+    <RootNamespace>EverythingToJpeg.App</RootNamespace>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+    <SupportedOSPlatformVersion>10.0.17763.0</SupportedOSPlatformVersion>
+    <TargetPlatformMinVersion>10.0.17763.0</TargetPlatformMinVersion>
+    <NoWarn>$(NoWarn);NU1901;NU1902;NU1903;NU1904</NoWarn>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\EverythingToJpeg.Core\EverythingToJpeg.Core.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="WPF-UI" Version="4.3.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="System.IO" />
+  </ItemGroup>
+
+</Project>