Refactors the NormalSub feature to move away from a hardcoded `/sub/normal/` path and a restrictive single-word subpath. This change introduces support for multi-segment, slash-separated subpaths (e.g., `path/to/resource`), providing greater flexibility for creating descriptive and structured subscription URLs.
Refactored the web panel's user link generation to resolve a major performance bottleneck. Previously, fetching links for N users would trigger N separate script executions, causing significant delays from process startup overhead.
- Introduced a new bulk API endpoint (`/api/v1/users/uri/bulk`) that accepts a list of usernames and calls the backend script only once.
- Updated the frontend JavaScript in `users.html` to use this new endpoint, replacing N parallel API calls with a single one.
- Cleaned up the `wrapper_uri.py` script for better readability and maintainability.
