example-content plugin, project website with screenshot

Example-content: footer button creates 20 realistic demo cards in a
"Project Alpha" bucket for screenshots and first-time exploration.

Website: full-page sections with large watermark labels, screenshot
hero with typing animation, email/spam section, Gitea detail,
relay encryption flow, keyboard keycaps, deploy options.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

public/plugins/example-content/plugin.json

@@ -0,0 +1,8 @@
+{
+    "name": "example-content",
+    "version": "1.0.0",
+    "description": "One-click demo content for screenshots and first-time exploration.",
+    "frontend": {
+        "js": ["example-content.js"]
+    }
+}