Add release workflow and document npm installation

Mirror the lobsterjs setup so tag pushes (`*.*.*`) build the package
and create a GitHub Release with `dist/lobster-wiki.js` attached.
README now also documents the `npm install @hacknock/lobster-wiki`
path alongside the CDN usage shown in Quick Start.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Kyome22

.github/workflows/release.yml

@@ -0,0 +1,32 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "*.*.*"
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - uses: actions/setup-node@v6
+        with:
+          node-version: "24.13.1"
+          cache: "npm"
+
+      - run: npm install -g npm@^11.10.0
+
+      - run: npm ci
+
+      - run: npm run build
+
+      - uses: softprops/action-gh-release@v3
+        with:
+          generate_release_notes: true
+          files: |
+            dist/lobster-wiki.js

README.md

@@ -62,6 +62,23 @@ Write a minimal `index.html`:
 
 Write your content pages in `content/` and serve with any static file server.
 
+## Installation
+
+### CDN
+
+The latest build is available via GitHub Pages — see the `import` URL in the Quick Start above. Or download `lobster-wiki.js` from the [releases page](https://github.com/Hacknock/lobster-wiki/releases) and host it yourself.
+
+### npm
+
+```sh
+npm install @hacknock/lobster-wiki
+```
+
+```ts
+import { initWiki } from "@hacknock/lobster-wiki";
+initWiki("./wiki.config.json");
+```
+
 ## Features
 
 - **SPA routing** — `?page=slug` query parameters with browser history support