feat: add GitHub Pages landing page and deployment workflow

Created docs/index.html with animated landing page — floating orbs, shimmer
gradients, stats ribbon, terminal demo, API endpoints, architecture section.
Added pages.yml workflow for automated deployment from docs/ folder.

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

Author: pleb

.github/workflows/pages.yml

@@ -0,0 +1,27 @@
+name: Deploy GitHub Pages
+on:
+  push:
+    branches: [main]
+    paths: ['docs/**']
+  workflow_dispatch:
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+concurrency:
+  group: pages
+  cancel-in-progress: false
+jobs:
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/configure-pages@v5
+      - uses: actions/upload-pages-artifact@v3
+        with:
+          path: docs
+      - id: deployment
+        uses: actions/deploy-pages@v4