Documentation and hinting

Description

Wrote a few missing docstrings, and ran autoformatting on a few files.

Related Issue(s)

Changes Made

• Change 1: Added some missing docstrings to test files & one function in edit_records.py (we now have 100% docstring coverage, yay)
• Change 2: Added periods to a few docstring descriptions (pre-commit requires this for files in src, but doesn't check tests).
• Change 3: Updated a docstring in login.py to reflect the change to how we're storing user type
• Change 4: Added docstring to setup.py
• Change 5: Fixed one try/except block with multiple error types on a single line (not allowed).
• Change 6: Lots of auto-formatting / line length stuff.
• Change 7: Added type hinting to fixtures, just for fun.

Test Plan

• make test

Checklist

• Code follows the project's coding style and conventions.
• Automated tests for the changes have been added or existing tests have been updated.
• Code coverage for new or modified code is maintained or improved.
• The code builds and runs without errors or warnings.
• Documentation has been updated to reflect the changes made.
• All discussions and feedback on the PR have been addressed.
• CI/CD pipelines pass successfully, including any required checks or tests.
• The PR has been reviewed and approved by the designated reviewers.