docs(wiki): update to v0.3.0 — fix /aiws-configure, add opencode, self-maintenance - `/configure` → `/aiws-configure` (renamed in v0.2.0 namespacing) across all pages. - Add **opencode** to the supported-targets lists (was missing since v0.1.1). - New "Se mantiene solo (v0.3.0)" note: `doctor` coherence checks, `/aiws-audit` self-audit, and AGENTS.md progressive disclosure (references/stack). Install stays version-agnostic (latest-download URL → v0.3.0).
docs: filosofia SDD, Harness Engineering y rutas de aprendizaje