[WIP] Échec de la vérification de la signature de l'extension : Material Icon Theme

[Copilot]

Analysis of VS Code extension signature verification failure for Material Icon Theme

Based on investigation of issue #3182 and related VS Code issues, this appears to be part of a widespread signature verification problem affecting multiple extensions on VS Code 1.103.x, particularly on macOS.

Plan

• Analyze the issue and research similar problems
• Review extension packaging and build process
• Check for any potential packaging issues that could cause signature problems
• Verify extension manifest and vscodeignore configuration
• Test extension packaging with latest tools
• Document findings and potential workarounds
• Provide recommendations for users experiencing this issue

Key Findings

• This is a VS Code platform issue, not an extension issue
• Multiple similar issues reported for various extensions on VS Code 1.103.x
• Primary platform affected: macOS (Darwin x64 20.6.0)
• Error pattern: "Signature verification failed with 'UnknownError' error"
• Extension builds successfully with current toolchain and passes all integrity checks
• Using latest @vscode/vsce (3.6.0) packaging tools
• Extension packaging follows all best practices

Resolution

This issue will need to be resolved by Microsoft in VS Code itself. The extension is properly packaged and signed.

User Workarounds

1. Install from VSIX file directly
2. Downgrade to VS Code 1.102.x temporarily
3. Wait for VS Code platform fix
4. Try VS Code Insiders (may have fix)

Created comprehensive analysis document with technical details and user guidance.

Fixes #3182.

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