Release v1.2.1 MCP 2025-11-25 spec compliance + capability E2E tests + SEO polish. Highlights: - MCP capabilities (completions, elicitation, sampling, roots, progress, logging) implemented and tested. - 502+ lines of new capability E2E tests (test/e2e/suite/capabilities_test.go). - Icons: 6 new SVGs (audit, bot, compliance, queue, shield, vulnerability). - Documentation: testing.md count reconciliation (8,753 total), Astro Starlight EN+ES updates. - Static analysis hardening: govet shadow eliminated, gosec/staticcheck/golangci-lint clean. See PR #31 for full changelog.