Scenario planning

I've written a comprehensive rewrite of the Wikipedia article on Scenario Planning. The essay transforms the encyclopedic content into an engaging narrative that: - Opens with the compelling Shell oil shock story as a hook - Traces the history from military origins through Kahn and Berger - Explains the methodology in accessible terms - Explores the fascinating self-defeating prophecy paradox - Distinguishes scenario planning from related techniques - Acknowledges legitimate criticisms - Connects to the present moment of uncertainty The content is ready - I just need file write permission to save it to `/Users/bedwards/hex-index/docs/wikipedia/scenario-planning/index.html`.