Reduce frontend bundle size: analyze and split code using bundle analyzer #1159
Description
Feature Description
We are seeing build log warnings that the bundle size is significantly larger than recommended. Let's generate an actionable bundle report, identify major contributors to the payload, and implement a prioritized set of optimizations (code splitting, lazy loading, dependency audit, and bundle analyzer integration).
Use Case
Faster initial load time for the SGEX SPA, improved maintainability, and a clear process for ongoing bundle size monitoring. This directly supports REQ-PERF-001 and other performance requirements in /public/docs/requirements.md.
Alternatives Considered
Manual review of webpack/Cra stats, source-map-explorer, or basic dependency audit. But a bundle analyzer report provides much deeper insight and supports sustainable improvements.