CodeGPT 13.20 fails to create Codex index or attach project folder in VS 2022 and 2026

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Description
After installing CodeGPT Chat & AI Agents v13.20 in Visual Studio 2022 Community, the extension loads but cannot create or attach a Codex index to the project folder.
Observed behavior

• Clicking Create Codex Indexing starts but crashes around 10 % progress.
• No CodexCache or Service folders appear under C:\Users\cliff\AppData\Local\CodeGPT.
• The extension folder (ygrxrfcx.duc) only contains codeGPTWebView and runtimes with WebView2Loader.dll.
• CodeGPT does not appear under View → Other Windows.
• Augmented Context panel auto‑closes immediately after launch.
  Environment
• Visual Studio 2022 Community 17.10 Preview (amd64)
• Windows 11 Pro 22H2 (64‑bit)
• CodeGPT Chat & AI Agents v13.20
• Project:  (MAUI/XAML solution)
  Expected behavior CodeGPT should unpack its helper runtime, register tool windows, and successfully create a Codex index for the selected folder.
  Steps to reproduce
• Install CodeGPT Chat & AI Agents v13.20 from Marketplace.
• Restart Visual Studio.
• Open Kodoku solution.
• Click Create Codex Indexing in Augmented Context.
• Observe early crash and missing runtime folders.
  Additional notes Reinstalling and clearing %LocalAppData%\CodeGPT and extension folders did not resolve the issue.
  Suspect a bad VSIX package or incomplete runtime unpacking.