Function scanEntityNames

Scans TypeScript files for hardcoded entity names and class name references that need updating for the MemberJunction v5.0 migration, and optionally fixes them in place.

Three strategies are applied:

1. Class name renames (regex): explicit subclass renames from subclass-rename-map.ts (e.g., ActionEntityServerEntity → MJActionEntityServer) plus auto-generated CodeGen artifact renames (e.g., ActionEntity → MJActionEntity)
2. Multi-word entity name renames (regex): 'AI Models' → 'MJ: AI Models'
3. Single-word entity name renames (AST): 'Actions' → 'MJ: Actions' (context-verified)