## 1. Event Payload Enrichment

- [x] 1.1 Update hero/feed CTA tracking payloads in `frontend/index.html` to include `article_title` alongside `article_id`.
- [x] 1.2 Update summary modal open tracking payload to include `article_title`.
- [x] 1.3 Update summary modal close tracking payload to include `article_title` when available.

## 2. Compatibility and Safety

- [x] 2.1 Preserve existing event names (`hero-cta-click`, `summary-modal-open`, `summary-modal-close`) and existing fields.
- [x] 2.2 Ensure payload enrichment is additive and does not break tracking when title is missing.

## 3. Validation

- [x] 3.1 Verify events in browser devtools/Umami network payload include `article_title`.
- [x] 3.2 Verify existing dashboard queries based on `article_id` remain valid.
