Switch to static export with build-time data fetching

- Change from server-side rendering to static export
- Fetch data at build time and save as JSON
- Remove API routes and tests, use static JSON file
- Switch back to WEB platform from WEB_COMPUTE
- Update build test for static export
- Exclude out directory from security scan
- Much simpler and more reliable approach

amplify.yml

@@ -9,11 +9,10 @@ frontend:
         - env | grep CONFLUENCE | sed 's/=.*/=***/'
     build:
       commands:
+        - npx tsx scripts/fetch-data.js
         - npm run build
-        - cp -r .next/static .next/standalone/.next/
-        - cp .next/standalone/.next/required-server-files.json .next/standalone/
   artifacts:
-    baseDirectory: .next/standalone
+    baseDirectory: out
     files:
       - '**/*'
   cache: