Wiring auth frontend and backend

[Vaibhav978]

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We're wiring the frontend and backend together for the auth login flow.
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1. AuthContext — add two missing methods:

forgotPassword(email) → POST /forgot-password
resetPassword(email, code, newPassword) → POST /reset-password
2. Login page — call useAuth().login(), add form validation, fix "Forgot password?" link to point to /forgot-password

3. Create page routes for the reset flow (these components have no URL yet):

/forgot-password → renders ResetPasswordForm then ResetLinkSet after submission
/reset-password → renders NewPasswordForm then ResetPasswordConfirmation after submission
4. Wire the reset components to their AuthContext methods and fix all the dead href="#" links

5. Pass email through the reset flow — ResetLinkSet currently hardcodes name@gmail.com, needs the actual email the user entered