feat(ms-ai-architect): release v1.10.1 — demo system + screenshot gallery

Adds one-click demo and committed screenshots so forkers see what the plugin
produces without running anything. Plugin contract unchanged.

- Inline <script id="demo-state-v1"> block (37 KB) built by
  scripts/build-demo-state.mjs from playground/test-fixtures/*.md
- "Last inn demo-data" button on onboarding (replaces all state with demo)
- raw_markdown persistence on project.reports[id] with equal-value guard
- rehydratePasteImports() auto-fills textareas + re-renders visualizations
  on project surface mount
- tests/screenshot/ standalone Playwright runner (own package.json)
- 24 committed screenshots in playground/screenshots/v1.10.0/
  (12 surfaces x 2 themes, deviceScaleFactor 2 retina, fullPage)

Tests: 215 + 201 + 70 + 7 = 493 PASS, no regressions.

Docs updated per OBLIGATORISK three-level rule (plugin README, plugin CLAUDE,
marketplace root README, CHANGELOG).

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

plugins/ms-ai-architect/tests/screenshot/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "ms-ai-architect-screenshot",
+  "version": "1.0.0",
+  "private": true,
+  "description": "Playwright tooling for capturing playground screenshots. Standalone — no relation to plugin runtime.",
+  "type": "module",
+  "scripts": {
+    "install-browser": "playwright install chromium",
+    "shoot": "node run.mjs"
+  },
+  "dependencies": {
+    "playwright": "^1.49.0"
+  }
+}