Call login API endpoint

[marlonbaeten]

Fixes #710 and #711

The login form now actually calls the login API endpoint.
Also added development endpoints to create a user or to login (without any credentials).

To Test:

# run the backend
cd backend
sqlx database reset
cargo run -- --reset-database --seed-data

# run the frontend
cd frontend
npm run dev:server

Or visit: https://3dd96737538f666fcb09a792a1e760435de0414b.abacus-test.nl/

Go to /account/login and login using "user" and "password".

[github-actions]

Sigrid maintainability feedback

✅ You wrote maintainable code and achieved your objective of 3.5 stars

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Sigrid compared your code against the baseline of 2025-01-27.

👍 What went well?

You fixed or improved 0 refactoring candidates.

👎 What could be better?

Unfortunately, 4 refactoring candidates were introduced or got worse.

Risk	System property	Location
🔴	Unit Size (Worsened)	backend/src/lib.rs router(SqlitePool)
🟡	Unit Size (Introduced)	frontend/app/component/form/user/login/LoginForm.tsx handleSubmit(FormEvent<HTMLFormElement>)
🟡	Unit Size (Introduced)	frontend/app/component/error/ErrorModal.tsx ErrorModal.tsx.ErrorModal(ErrorModalProps)
🟡	Module Coupling (Worsened)	frontend/lib/api/ApiError.ts

📚 Remaining technical debt

3 refactoring candidates didn't get better or worse, but are still present in the code you touched.

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⭐️ Sigrid ratings

System property	System on 2025-01-27	Before changes	New/changed code
Volume	5.2	N/A	N/A
Duplication	4.3	4.7	4.8
Unit Size	2.4	2.5	2.1
Unit Complexity	3.4	5.5	5.5
Unit Interfacing	2.9	4.1	4.1
Module Coupling	4.0	4.2	4.1
Component Independence	2.8	N/A	N/A
Component Entanglement	3.6	N/A	N/A
Maintainability	3.6	4.3	4.2

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[Lionqueen94]

Made a small improvement to the rendering of the error alert, making sure the page does not scroll when there is an error and making sure the error cannot be closed (accidentally).