## Problem
When accessing file URLs like `/files/attachment/{token}/{filename}`,
the server was returning 500 errors with no logs. The issue was that the
route pattern `*path/:filename` was not properly extracting parameters,
causing `request.params[0]` to be undefined.
## Solution
- Changed route from `@Get('*path/:filename')` to
`@Get(':folder/:token/:filename')` for explicit parameter extraction
- Simplified `extractFileInfoFromRequest` to use named route parameters
directly instead of complex path parsing
- Removed unnecessary logging that was added during debugging
- Added test to verify route parameters are correctly extracted and
passed to FileService
## Testing
- Added unit test that verifies folder, token, and filename parameters
are correctly passed to the service
- Test will catch any future regressions where route parameters are not
properly extracted
