chore(voyage): release v5.0.0 — remove bespoke playground + /trekrevise + Handover 8; render produced artifacts to HTML + link, annotate via /playground

The v4.2/v4.3 bespoke playground SPA (~388 KB), the /trekrevise command,
Handover 8 (annotation → revision), the supporting lib/ modules
(anchor-parser, annotation-digest, markdown-write, revision-guard), the
Playwright e2e suite, and the @playwright/test / @axe-core/playwright
devDeps are removed. A browser walkthrough found the playground borderline
unusable, and it duplicated the official /playground plugin's
document-critique / diff-review templates.

In their place: scripts/render-artifact.mjs — a small, zero-dependency
renderer that turns a brief/plan/review .md into a self-contained,
design-system-styled, zero-network .html (frontmatter folded into a
<details> block). /trekbrief, /trekplan, and /trekreview call it on their
last step and print the file:// link; to annotate, run /playground
(document-critique) on the .md and paste the generated prompt back.

Resolves the v4.3.1-deferred findings as moot (their target files are
deleted). npm test green: 509 tests, 507 pass, 0 fail, 2 skipped.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

plugins/voyage/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "voyage",
-  "description": "Voyage — brief, research, plan, execute, review, revise, continue. Contract-driven Claude Code pipeline + first marketplace playground.",
-  "version": "4.3.0",
+  "description": "Voyage — brief, research, plan, execute, review, continue. Contract-driven Claude Code pipeline; renders produced artifacts to HTML + link, annotate via the /playground plugin.",
+  "version": "5.0.0",
   "author": {
     "name": "Kjell Tore Guttormsen"
   },