Fixes: 1) Corrected `ForeignKey` type assertions across models; 2) Resolved typos and formatting inconsistencies in `.env` and README; 3) Fixed explicit boolean checks in user manager methods.
Extra: Updated type hints in multiple models, serializers, and views.
Fixes: 1) None;
Extra: 1) Removed the entire "geo" module, including migrations, model definitions, admin configurations, utilities, documentation, templates, translations, and related files. Moved functionality to "core".
