xpp-lens 1.4.0

### Added
- Claude Code skills in the package: `/xpp-ponytail` (the smallest complete X++ change: configuration, standard,
  the model's own code, a narrow extension, only then new code) and `/xpp-ponytail-review` (a review of an X++ change
  with a concrete case and the smallest fix per finding), built on the `xpp_*` tools. Based on
  [Ponytail](https://github.com/DietrichGebert/ponytail) (MIT), rewritten for X++; the notice is in
  `skills/THIRD-PARTY-NOTICES.md`. The source of the skills is now this repository (`skills\`).
- The setup program and `install.ps1` copy them to `%USERPROFILE%\.claude\skills`, in the language of the installation
  (English or Polish descriptions and review headings: the wizard's language, or `install.ps1 -SkillsLanguage en|pl`,
  by default the Windows language), kept by updates. A check box in the wizard and `install.ps1 -NoSkills` skip them.
- A skill changed locally is never overwritten or removed: `skills-installed.json` in the installation folder keeps
  the SHA-256 of what was installed; a changed skill is kept with a warning (the wizard shows it, `install.ps1` prints
  it, `xpplens status` lists it after a silent update). The uninstallers remove only unchanged skills they installed.
  A folder of that name not installed by xpp-lens is left alone unless it equals the package's copy.
- `xpplens skills [install [--lang en|pl] | remove | status]`.

Author: willowdev-code

src/XppLens/XppLens.csproj

@@ -22,7 +22,7 @@
     <AssemblyTitle>xpp-lens — X++ code index for MCP</AssemblyTitle>
     <Description>X++ (Dynamics 365 F&amp;O) code index served to AI assistants over MCP</Description>
     <Copyright>Copyright © 2026 WillowDev</Copyright>
-    <Version>1.4.0-beta.1</Version>
+    <Version>1.4.0</Version>
   </PropertyGroup>
 
   <ItemGroup>