Switch to v2 ocean logo, archive v1, update icons, remove key for CWS upload, and add zip script

scripts/generate-icons.js

@@ -0,0 +1,13 @@
+import sharp from 'sharp';
+import fs from 'fs';
+
+const src = 'public/icons/OpenScript_v2.png';
+const sizes = [16, 32, 48, 128];
+
+for (const s of sizes) {
+  await sharp(src)
+    .resize(s, s, { fit: 'contain' })
+    .png()
+    .toFile(`public/icons/icon-${s}.png`);
+  console.log(`✓ Generated icon-${s}.png`);
+}