Task: Investigate & Fix Boost "Demo" Content on Library Pages

**Description:**
Some library pages (e.g. Boost Accumulators) show Boost Demo content across different cards on the page. Investigate how this data was populated and correct the affected records.

Affected libraries captured so far:
- Accumulators
- Algorithm

**Acceptance criteria:**
Affected libraries show their own correct content, with no Boost Demo data leaking across pages.

Start by tracing how library-page data is populated, then compare the Accumulators and Algorithm records with the Boost Demo content to identify the affected records. Done means each affected library page displays only its own correct content and no Boost Demo data appears across its cards.

Written by the indexing model from the issue text.