feat: sync showcase with WRNexusJS 0.8.72 and @wrnexus/ui 0.8.88

- Sync app, public, scripts, test and examples from the framework's
  component-showcase: redesigned component demos, marketing blocks under
  /blocks, template and preview galleries, distinct Timeline/Section
  variants, Chat Bubble receipts, a top-placement Drawer demo, and the
  playground code panel fix (objects in array props no longer blank out).
- Standalone adaptations kept: the generator and tests read
  component-reference.json from the published @wrnexus/ui, and tests use
  the published @wrnexus/compiler and @wrnexus/syntax.
- Dependencies: every @wrnexus/* package to its latest release (ui 0.8.88,
  styles 0.8.26, core 0.8.16, cli 0.8.72, ...), happy-dom for the
  playground tests, Tailwind 4.3; bun.lock and package-lock.json refreshed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

package.json

@@ -18,26 +18,27 @@
     "update:preview": "wrnexus update . --dry-run"
   },
   "dependencies": {
-    "@wrnexus/core": "^0.8.7",
-    "@wrnexus/dev-server": "^0.8.7",
-    "@wrnexus/helpers": "^0.8.7",
-    "@wrnexus/plugin": "^0.8.7",
-    "@wrnexus/styles": "^0.8.7",
-    "@wrnexus/syntax": "^0.8.7",
-    "@wrnexus/ui": "^0.8.7"
+    "@wrnexus/core": "^0.8.16",
+    "@wrnexus/dev-server": "^0.8.66",
+    "@wrnexus/helpers": "^0.8.9",
+    "@wrnexus/plugin": "^0.8.9",
+    "@wrnexus/styles": "^0.8.26",
+    "@wrnexus/syntax": "^0.8.19",
+    "@wrnexus/ui": "^0.8.88"
   },
   "devDependencies": {
-    "@iconify-json/lucide": "^1.2.118",
+    "@iconify-json/lucide": "^1.2.123",
     "@iconify/tailwind4": "^1.2.3",
-    "@tailwindcss/cli": "^4.0.0",
-    "@wrnexus/cli": "^0.8.7",
-    "@wrnexus/compiler": "^0.8.7",
+    "@tailwindcss/cli": "^4.3.3",
     "@types/bun": "^1.3.14",
+    "@wrnexus/cli": "^0.8.72",
+    "@wrnexus/compiler": "^0.8.30",
+    "happy-dom": "^20.11.6",
     "prettier": "^3.6.2",
-    "tailwindcss": "^4.0.0",
+    "tailwindcss": "^4.3.3",
     "typescript": "^5.5.0"
   },
   "wrnexus": {
-    "version": "0.8.7"
+    "version": "0.8.72"
   }
 }