Let VS Code infer extension host selection

[Copilot]

Summary

• Remove the explicit extensionKind declaration and let VS Code choose the install/runtime host for the current window.
• Add a compact startup diagnostics line with runtime placement signals: VS Code version, resolved extensionKind, remoteName, uiKind, platform, arch, and debugMode.

Verification

Tested the VSIX install flow on VS Code 1.121.0:

• Local macOS window: installs locally, runs with extensionKind=1 remoteName=none uiKind=1 platform=darwin arch=arm64, provider works.
• Remote-SSH Linux window: Install from VSIX installs on the SSH side, runs with extensionKind=2 remoteName=ssh-remote uiKind=1 platform=linux arch=x64, provider works.
• Codespaces Linux window: Install from VSIX installs on the Codespace side, runs with extensionKind=2 remoteName=codespaces uiKind=1 platform=linux arch=x64, provider works.

This replaces the earlier UI-first direction. The tested behavior is better with no explicit extensionKind: local windows run locally, while Remote-SSH and Codespaces windows install and run the provider on the remote/workspace side.

Checks

• npm run compile
• npm run lint
• npm run format:check

[Copilot]

Pull request overview

This PR adjusts the extension’s remote/local placement behavior by removing the explicit extensionKind manifest declaration so VS Code can infer the appropriate extension host, and adds a startup log line to help diagnose where/how the extension is running.

Changes:

• Removed extensionKind from package.json to allow VS Code to choose the install/runtime host per window.
• Extended activation logging with environment/runtime placement signals (VS Code version, extensionKind, remoteName, uiKind, platform/arch, debugMode).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/extension.ts	Adds startup diagnostics log fields for runtime placement and environment.
package.json	Removes explicit extensionKind to let VS Code infer host selection.

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