feat(auth): add password reset flow with OTP

- Add password-reset Prisma schema for OTP tracking
- Add API contract schemas (start, verify, resend)
- Add password-reset service with OTP validation and email sending
- Add frontend reset-password page with 2-step flow
- Add InputOTP component usage for OTP input
- Add link to reset-password in login page
- Remove link to About in login
- Center and resize login/reset password forms

apps/backend/src/modules/password-reset/handlers/start-password-reset.handler.ts

@@ -0,0 +1,10 @@
+import { startPasswordReset } from '@/modules/password-reset/services/password-reset.service';
+import type { AppContext } from '@/types/hono';
+import type { PasswordResetStartInput } from '@repo/api-contract';
+
+export async function startPasswordResetHandler(c: AppContext) {
+  const payload = c.req.valid('json' as never) as PasswordResetStartInput;
+
+  const result = await startPasswordReset(payload);
+  return c.json(result, 202);
+}