Function scoreNewsworthiness

Score the newsworthiness of a set of documents for strategic importance.

Evaluates across 6 dimensions:

1. Strategic Keywords — Presence of high-impact political terms
2. Document Type — Propositions/reports score higher than motions
3. Committee Importance — Finance, Constitutional, Defence committees score higher
4. Multi-Party Involvement — Cross-party issues are more newsworthy
5. Coalition Context — Instability amplifies newsworthiness
6. Content Richness — More substantive content enables deeper analysis