Migration to TypeScript and changed API-calls

[Wunderwaffel]

• Migrated away from JavaScript to TypeScript
• Changed the way API calls are made (services + environment variables)
• Changed main.css settings
• Added pre-commit hooks for automatic code formatting and linting

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Align auth store user fields with API response

The new User interface assumes a property named id, but the login API returns user_id (see UserResponse in the backend). Because setAuth stores the raw response object, authStore.user.id is always undefined after a successful login, so any view or subsequent request that reads the user ID will fail. Either map user_id to id when storing the user or update the interface to match the backend payload.

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[zagemello]

LGTM