eliminate any usage across TypeORM/Database mock types
Replaced 23 any in types.ts and 5 any in index.ts with
typed alternatives:
- MockDataSource/MockRepository: generics + Record<string, unknown>
- MockQueryBuilder: Record<string, unknown>
- MockDatabaseService: unknown[]
- createMockAxios: removed as any cast
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>