v3.0.8

Spectra 3.0.8 patch release.\n\nHighlights:\n- Aligns the public CLI reference and generated profile docs with the current command surface.\n- Documents Full-only agent adapter generation via --agents.\n- Exposes spectra help verify and fixes spectra check --help usage text.\n- Bumps packaged runtime, templates, native install docs, and manifests to 3.0.8.\n\nVerification:\n- npm test --workspaces --if-present\n- npm pack --workspace packages/cli --dry-run\n- PR #8 checks passed.