docs(marketplace): update root README with voyage v4.3

Step 34 of v4.3 plan — Wave 8 docs (3-doc-niv mandate, marketplace landing):

- Voyage card bumped from v4.2.0 to v4.3.0
- New v4.3.0 paragraph above v4.2.0 paragraph: dashboard-sentrisk
  rebuild, file://-loader (webkitdirectory + drag-drop + URL-parameter),
  anchor-rendering modent (block-boundary + parseAnchor sync + gutter-
  badge + sidebar-rail + J/K keyboard), A11Y panel fra DS-primitives,
  screenshots-spor convention, path-traversal filter, DOMPurify-vendoring,
  test pyramid Groups A-D (672 -> 705 pass), WCAG-baseline'd defer-til-v4.4.

Cross-plugin-boundary commit: koordinert med plugins/voyage/CLAUDE.md +
README.md + CHANGELOG.md + package.json (Step 33).

README.md

@@ -77,11 +77,13 @@ Key commands: `/config-audit posture`, `/config-audit feature-gap`, `/config-aud
 
 ---
 
-### [Voyage](plugins/voyage/) `v4.2.0`
+### [Voyage](plugins/voyage/) `v4.3.0`
 
-Deep requirements gathering, research, implementation planning, self-verifying execution, independent post-hoc review, operator-driven artifact annotation via voyage's first marketplace playground, and zero-friction multi-session resumption — with specialized agent swarms, adversarial review, and failure recovery. Seven-command (brief, research, plan, execute, review, **revise**, continue) universal pipeline.
+Deep requirements gathering, research, implementation planning, self-verifying execution, independent post-hoc review, operator-driven artifact annotation via voyage's marketplace playground, and zero-friction multi-session resumption — with specialized agent swarms, adversarial review, and failure recovery. Seven-command (brief, research, plan, execute, review, **revise**, continue) universal pipeline.
 
-v4.2.0 (non-breaking) adds the `/trekrevise` command and the **Handover 8 (annotation → revision)** annotation pipeline. New `playground/voyage-playground.html` (single self-contained HTML with vendored `markdown-it` + `highlight.js`) lets operators paste a brief/plan/review, drag-select or hover-anchor comments, and export a `/trekrevise --apply` batch. Round-trippable in-place revision: byte-identical body outside anchor blocks (SC2), idempotent `annotation_digest` (SC3), additive frontmatter — no `*_version` bump, every brief / plan / review written before v4.2 validates as `revision: 0` without migration. Single-iteration MVP per research-05; multi-iteration loops deferred. Includes `lib/parsers/anchor-parser.mjs` + `lib/parsers/annotation-digest.mjs`, `lib/util/markdown-write.mjs` + `lib/util/revision-guard.mjs`, `scripts/render-artifact.mjs` server-side render CLI, and `docs/annotation-quickstart.md` ≤7-step operator walkthrough.
+v4.3.0 (non-breaking) rebuilds the v4.2 playground with a dashboard-centric layout, file://-loader, and matured anchor-rendering. `playground/voyage-playground.html` now opens a `.claude/projects/<slug>/`-mappe directly via `webkitdirectory` directory-picker, drag-drop with `webkitGetAsEntry` recursive walk, or `?project=/abs/path` URL-parameter — no more paste-into-textarea workflow. The new `fleet-grid` of `fleet-tile` per artifact with drill-down detail surface achieves visual parity with `plugins/llm-security/playground/llm-security-playground.html`. Anchor-rendering matures: block-boundary placement with code-fence/table/list-item fallback, browser-side `parseAnchor` mirroring Node-side regex, numbered-badge gutter + yellow-tint highlight, hidden-by-default sidebar-rail with J/K keyboard navigation, two-opacity pattern (active 100% / inactive 40% / resolved 30% strikethrough). A11Y panel built from DS-primitives. Screenshots-spor convention via `window.__voyage` hooks (`navigate` / `scheduleRender` / `getProjectArtifacts`) + `docs/screenshots/`. Path-traversal + symlink/dotfile filter (`isProjectPathSafe`). DOMPurify ≥ 3.1.1 vendored for `sanitizeAnnotation`; HTML-comment indirect prompt-injection mitigation via `parseAnchor`-allowlist gate before `md.render`. Total bundle 388 KB / 460 KB HALT-gate. Test pyramid Groups A-D — Group A 17 static-HTML grep tests (SC1 10-element checklist + SC3 + SC6 + SC7 tag-level no-CDN), Group B 9 structure tests, Group C 7 export-bundle schema + `annotation_digest` SHA-256 validity tests, Group D 4 Playwright e2e (light/dark axe-core delta-baseline + pixel-diff smoke + zero-external-network authoritative gate via `npm run test:e2e`). Test count: 672 → 705 pass / 0 fail. WCAG-violations baseline'd; actual fix deferred to v4.4 (HTML FROZEN in Sesjon 6 per Wave 7 verification-only scope).
+
+v4.2.0 (non-breaking) adds the `/trekrevise` command and the **Handover 8 (annotation → revision)** annotation pipeline. The original `playground/voyage-playground.html` (single self-contained HTML with vendored `markdown-it` + `highlight.js`) lets operators paste a brief/plan/review, drag-select or hover-anchor comments, and export a `/trekrevise --apply` batch. Round-trippable in-place revision: byte-identical body outside anchor blocks (SC2), idempotent `annotation_digest` (SC3), additive frontmatter — no `*_version` bump, every brief / plan / review written before v4.2 validates as `revision: 0` without migration. Single-iteration MVP per research-05; multi-iteration loops deferred. Includes `lib/parsers/anchor-parser.mjs` + `lib/parsers/annotation-digest.mjs`, `lib/util/markdown-write.mjs` + `lib/util/revision-guard.mjs`, `scripts/render-artifact.mjs` server-side render CLI, and `docs/annotation-quickstart.md` ≤7-step operator walkthrough.
 
 v4.0.0 (breaking) renames the plugin from `ultraplan-local` to **Voyage** and all seven commands from `/ultra*-local` to `/trek*` to remove name collision with Anthropic's `/ultraplan` and `/ultrareview` features. No migration path — fork-and-own users re-fork from main. See `plugins/voyage/TRADEMARKS.md` and `plugins/voyage/CHANGELOG.md`.