Summary

• ensure VS Code test runs always finish when worker.runTest rejects by handling errors in RstestApi.runTest
• surface worker failures to users via test output and showErrorMessage, and close worker in continuous mode on failure
• harden project-side async flows by catching init/runtime list errors and resetting busy in a finally block to avoid stuck UI state

Validation

• npm run typecheck (packages/vscode)
• pnpm biome check packages/vscode/src/master.ts packages/vscode/src/project.ts
• npm run test:e2e (packages/vscode)