Rebrand application from 'Beach Litter Mapping Platform' to 'Litter Scouts'

- Updated app name in all source files, documentation, and configuration
- Changed package names in package.json files
- Updated header, titles, and user-facing text
- Modified email templates and notification text
- Updated steering rules and spec documents

src/types/index.ts

@@ -1,4 +1,4 @@
-// Core type definitions for the Beach Litter Mapping Platform
+// Core type definitions for Litter Scouts
 
 export type LitterType = 'plastic' | 'metal' | 'glass' | 'organic' | 'hazardous' | 'other';