The extension now probes '<serverPath> --version' on activation and refuses to
start (with a clear message) when testium is older than 0.2.0 — the release that
introduced 'testium lsp'. Unreadable version -> warn but proceed; binary not
found -> actionable error. Minimal component-wise comparator, no extra dep.
Also add the repository field and an EUPL-1.2 LICENSE file (Open VSX
prerequisites).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
