Reduced complexity in the file src/user/create.js

[hangyiw]

Changes Made

Extracted logic from the create function in src/user/create.js into two
helper functions:

• createUserData: Builds initial user data object
• initializeUser: Handles database operations and notifications

This reduces cyclomatic complexity from 11 to improve maintainability. Resolves #36.

Testing

• Ran npm lint and npm test - all passing
• Verified with qlty that complexity was reduced
• Tested user registration flow through UI: clicked register button, entered
  username/password, accepted terms, and successfully created account
• Confirmed expected console output appeared in logs immediately following registration

[coveralls]

Pull Request Test Coverage Report for Build 17487719375

Details

• 16 of 16 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.002%) to 78.531%

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Totals
Change from base Build 17472903245:	0.002%
Covered Lines:	24695
Relevant Lines:	29609

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💛 - Coveralls