Harden security, modularize API bootstrap, and fix scale SSE auth.

Block web access to sensitive paths, require API_TOKEN for mutations, encrypt GitHub issue credentials in .env, auto-provision tokens for same-origin clients, and pass api_token in scale relay URLs since EventSource cannot send headers.

Co-authored-by: Cursor <cursoragent@cursor.com>

package.json

@@ -0,0 +1,9 @@
+{
+  "name": "evershelf",
+  "private": true,
+  "scripts": {
+    "build:js": "npx --yes terser assets/js/app.js -c -m -o assets/js/app.min.js",
+    "build:css": "npx --yes clean-css-cli -o assets/css/style.min.css assets/css/style.css",
+    "build": "npm run build:js && npm run build:css"
+  }
+}