fix(docker): Restore Vite+ release image builds

[yuanzui-cf]

Summary

Release image builds failed at vp install --frozen-lockfile because the Dockerfile added /root/.vite-plus/bin to PATH while the installer placed Vite+ in /root/.local/share/vite-plus/bin. Use the actual installation path and verify vp immediately after installation.

The Quality workflow now builds the Debian, Slim, and Alpine release targets through the same Docker Bake definition used for publishing, then runs both packaged binaries with --version. Validation images remain local to the CI runner. The self-hosting guide documents this coverage.

Validation

• Built the Console builder through dependency installation and production asset compilation.
• Built all three release runtime images locally on Linux ARM64 with Docker Bake.
• Ran grass-control-api --version and grass-node --version successfully in each image with networking disabled.
• just quality passed: 483 Control API tests, 117 Node tests, and 225 Console tests, plus formatting, lint, checks, builds, and license validation. Infrastructure-dependent ignored tests were not rerun for this Dockerfile/workflow change.
• actionlint passed for the updated Quality workflow.
• git diff --check passed.
• GitHub Actions passed Quality, Node delivery smoke, and Release images for 832d6794. On Linux AMD64, all three release variants built successfully and both packaged binaries started in each image.

Tracking

Closes #187

Parent: #28

Repeat the closing reference when promoting develop to the default main branch.