Add: Narrative Scorer — Automated narrative quality assessment for digital therapy

Adding Narrative Scorer to the Tools section. **What is Narrative Scorer?** - Automated narrative quality assessment for digital reminiscence therapy - Measures L0 cognitive markers (internal/external details, event segmentation, narrative coherence) - Based on autobiographical memory research and PENN scoring methodology - Features Gradio Web UI for interactive demonstration **Why it fits here:** - Specialized LLM evaluation tool for narrative quality - Vertical application in digital health/elder care - Open source with working demo GitHub: https://github.com/cittaverse/narrative-scorer Demo: https://github.com/cittaverse/narrative-scorer#gradio-web-ui --- This tool complements existing healthcare evaluation tools (Medbench, PsyEval) by focusing on narrative quality assessment for digital reminiscence therapy.