Add Vercel static-site deployment for the landing page

.gitignore

@@ -14,6 +14,7 @@ __pycache__/
 
 # Build output
 dist/
+dist-site/
 build/
 out/
 *.egg-info/

scripts/build-site.mjs

@@ -0,0 +1,18 @@
+#!/usr/bin/env node
+// Assemble the static landing site for static hosts (Vercel, Netlify, Pages).
+// The full app needs a persistent Node server and a local SQLite database, so
+// only the self-contained landing page ships to static hosting: land.html
+// becomes index.html and brings its one script along.
+import fs from 'node:fs';
+import path from 'node:path';
+
+const root = path.resolve(import.meta.dirname, '..');
+const out = path.join(root, 'dist-site');
+const files = { 'land.html': 'index.html', 'land.js': 'land.js' };
+
+fs.rmSync(out, { recursive: true, force: true });
+fs.mkdirSync(out, { recursive: true });
+for (const [src, dest] of Object.entries(files)) {
+  fs.copyFileSync(path.join(root, 'public', src), path.join(out, dest));
+}
+console.log(`Static landing site written to ${out} (${Object.keys(files).length} files)`);

vercel.json

@@ -0,0 +1,21 @@
+{
+  "$schema": "https://openapi.vercel.sh/vercel.json",
+  "installCommand": "",
+  "buildCommand": "node scripts/build-site.mjs",
+  "outputDirectory": "dist-site",
+  "headers": [
+    {
+      "source": "/(.*)",
+      "headers": [
+        {
+          "key": "Content-Security-Policy",
+          "value": "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; connect-src 'self'; object-src 'none'; base-uri 'none'; frame-ancestors 'none'; form-action 'self'"
+        },
+        { "key": "X-Content-Type-Options", "value": "nosniff" },
+        { "key": "Referrer-Policy", "value": "no-referrer" },
+        { "key": "Permissions-Policy", "value": "camera=(), microphone=(), geolocation=()" },
+        { "key": "Cross-Origin-Resource-Policy", "value": "same-origin" }
+      ]
+    }
+  ]
+}