PushRight for VS Code 0.2.1

Adds PushRight Graph below Changes in the VS Code Source Control sidebar. It works with built-in Git disabled and displays commit lanes, all branches, and branch/tag labels. Select a repository in the dropdown and click a commit to open its details in the full graph.

Also fixes initial navigation to an older commit being overwritten by HEAD selection. Includes English and Simplified Chinese UI and documentation.

Install the Windows x64 VSIX using Extensions: Install from VSIX. After updating, reload VS Code and expand Source Control > PushRight Graph. If hidden, enable it from the Source Control Views menu.

Validation: type checking with zero errors/warnings, 15 automated checks, successful VSIX installation, 12 real VS Code smoke checks against the installed package, and manual verification of sidebar rendering and older-commit navigation.

Windows x64 only. Requires VS Code 1.90+ and Git on PATH. PR/Issue collaboration remains outside this preview.