6 feat implement automatic binary update from GitHub releases

[Arthurvroum]

No description provided.

[Copilot]

Pull request overview

Adds automatic provisioning of the CoreTrace/ctrace CLI by downloading the latest GitHub Release into extension global storage, then updates extension activation/analysis flows to use the ensured binary.

Changes:

• Introduces BinaryUpdater.ensureBinary() to download + extract the latest release asset and cache it under globalStorage/bin.
• Switches extension commands to use ensureBinary() (and adds an activation-time prefetch).
• Updates extension packaging metadata (publisher/icon/keywords), dependencies (axios/tar), and documentation.

Reviewed changes

Copilot reviewed 5 out of 8 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
src/extension.ts	Uses ensureBinary() (incl. activation prefetch) instead of only bundled binary lookup.
src/ctrace/BinaryUpdater.ts	New updater/downloader for GitHub Releases assets + extraction to global storage.
src/ctrace/SarifParser.ts	Hardens SARIF merge logic around missing runs.
package.json	Adds marketplace metadata and runtime deps (axios, tar).
package-lock.json	Locks new deps; tar entry shows deprecation warning.
README.md	Documents auto-download + background update behavior.
.gitignore	Updates a comment line.
icon.png	Adds extension icon asset.

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[Copilot]

Pull request overview

Copilot reviewed 5 out of 8 changed files in this pull request and generated 4 comments.

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[Copilot]

Pull request overview

Copilot reviewed 7 out of 11 changed files in this pull request and generated 4 comments.

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