[Child] Update: Documentation Index (docs/index.md) - Complete & Current

[ashleyshaw]

Parent Issue: #904

Overview

Update docs/index.md so it is complete, current, and grouped by topic.

In-Scope

• Add missing docs
• Improve topical grouping and summaries
• Add references to templates/config docs where relevant

Checklist

• Current file inventory captured
• Index updated and reorganised
• Descriptions reviewed for clarity

Deliverables

• Updated docs/index.md
• Change summary with rationale

Related Files

• docs/index.md
• docs/

[linear-code]

LS-983