feat(jobs/new): add user account registration and fix companyId in job payload

- Add password + confirm-password fields to billing step (Step 3) so the
  recruiter creates their account credentials during the job posting flow
- Validate password length (≥8) and confirmation match before proceeding
- Extract company `id` from POST /auth/register/company response and send
  it as `companyId` in the job creation payload (was missing — caused 400)
- Pass `contact` (full name) to company registration endpoint
- Remove hardcoded "Temp@123456" password; use the user-provided one
- Remove hardcoded "+55" phone prefix; send raw digits with "+" prefix
- Add translations (pt-BR, en, es) for password fields and error messages

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/app/jobs/new/page.tsx

@@ -179,6 +179,12 @@ const contentByLocale = {
       phonePlaceholder: "(00) 0000-0000",
       mobile: "Celular",
       mobilePlaceholder: "(00) 00000-0000",
+      accountTitle: "Dados de acesso à conta",
+      accountHint: "Você usará este e-mail e senha para acessar o painel da empresa.",
+      password: "Senha *",
+      passwordPlaceholder: "Mínimo 8 caracteres",
+      confirmPassword: "Confirmar senha *",
+      confirmPasswordPlaceholder: "Repita a senha",
       termsAccept: "Li e aceito as",
       termsLink: "Condições Legais",
       termsAnd: "e a",
@@ -218,6 +224,8 @@ const contentByLocale = {
       paymentRequired: "Selecione um método de pagamento.",
       registerError: "Erro ao registrar empresa",
       unexpectedError: "Erro inesperado ao publicar vaga",
+      passwordRequired: "Informe uma senha com ao menos 8 caracteres.",
+      passwordMismatch: "As senhas não coincidem.",
     },
     success: "Vaga cadastrada com sucesso!",
   },
@@ -335,6 +343,12 @@ const contentByLocale = {
       phonePlaceholder: "(00) 0000-0000",
       mobile: "Mobile",
       mobilePlaceholder: "(00) 00000-0000",
+      accountTitle: "Account access details",
+      accountHint: "You will use this email and password to access the company dashboard.",
+      password: "Password *",
+      passwordPlaceholder: "Minimum 8 characters",
+      confirmPassword: "Confirm password *",
+      confirmPasswordPlaceholder: "Repeat password",
       termsAccept: "I have read and accept the",
       termsLink: "Legal Terms",
       termsAnd: "and the",
@@ -374,6 +388,8 @@ const contentByLocale = {
       paymentRequired: "Please select a payment method.",
       registerError: "Error registering company",
       unexpectedError: "Unexpected error publishing job",
+      passwordRequired: "Please enter a password with at least 8 characters.",
+      passwordMismatch: "Passwords do not match.",
     },
     success: "Job posted successfully!",
   },
@@ -491,6 +507,12 @@ const contentByLocale = {
       phonePlaceholder: "(00) 0000-0000",
       mobile: "Celular",
       mobilePlaceholder: "(00) 00000-0000",
+      accountTitle: "Datos de acceso a la cuenta",
+      accountHint: "Usará este correo y contraseña para acceder al panel de la empresa.",
+      password: "Contraseña *",
+      passwordPlaceholder: "Mínimo 8 caracteres",
+      confirmPassword: "Confirmar contraseña *",
+      confirmPasswordPlaceholder: "Repita la contraseña",
       termsAccept: "He leído y acepto las",
       termsLink: "Condiciones Legales",
       termsAnd: "y la",
@@ -530,6 +552,8 @@ const contentByLocale = {
       paymentRequired: "Seleccione un método de pago.",
       registerError: "Error al registrar empresa",
       unexpectedError: "Error inesperado al publicar vacante",
+      passwordRequired: "Ingrese una contraseña con al menos 8 caracteres.",
+      passwordMismatch: "Las contraseñas no coinciden.",
     },
     success: "¡Vacante publicada con éxito!",
   },
@@ -593,6 +617,8 @@ export default function PostJobPage() {
     contactEmail: "",
     contactPhone: "",
     contactMobile: "",
+    password: "",
+    confirmPassword: "",
     acceptTerms: false,
     acceptMarketing: false,
   });
@@ -655,6 +681,14 @@ export default function PostJobPage() {
       toast.error(c.errors.billingEmailInvalid);
       return false;
     }
+    if (!billing.password || billing.password.length < 8) {
+      toast.error(c.errors.passwordRequired);
+      return false;
+    }
+    if (billing.password !== billing.confirmPassword) {
+      toast.error(c.errors.passwordMismatch);
+      return false;
+    }
     if (!billing.acceptTerms) {
       toast.error(c.errors.termsRequired);
       return false;
@@ -688,8 +722,8 @@ export default function PostJobPage() {
     setLoading(true);
     try {
       const apiBase = process.env.NEXT_PUBLIC_API_URL || "";
-      const password = "Temp@123456";
       const billingPhone = cleanDigits(billing.contactMobile || billing.contactPhone || job.applicationPhone);
+      const contactFullName = [billing.contactName, billing.contactLastName].filter(Boolean).join(" ");
 
       const registerRes = await fetch(`${apiBase}/api/v1/auth/register/company`, {
         method: "POST",
@@ -697,9 +731,10 @@ export default function PostJobPage() {
         body: JSON.stringify({
           companyName: company.name,
           email: billing.contactEmail,
+          contact: contactFullName || null,
           document: cleanDigits(company.document) || null,
-          password,
+          password: billing.password,
-          phone: billingPhone ? `+55${billingPhone}` : null,
+          phone: billingPhone ? `+${billingPhone}` : null,
           website: company.website || null,
           employeeCount: company.employeeCount || null,
           foundedYear: company.foundedYear ? Number(company.foundedYear) : null,
@@ -712,7 +747,7 @@ export default function PostJobPage() {
         throw new Error(err.message || c.errors.registerError);
       }
 
-      const { token } = await registerRes.json();
+      const { id: companyId, token } = await registerRes.json();
 
       const salaryMin = job.salaryMode === "fixed" ? Number(job.salaryFixed || 0) : Number(job.salaryMin || 0);
       const salaryMax = job.salaryMode === "fixed" ? Number(job.salaryFixed || 0) : Number(job.salaryMax || 0);
@@ -724,6 +759,7 @@ export default function PostJobPage() {
           Authorization: `Bearer ${token}`,
         },
         body: JSON.stringify({
+          companyId,
           title: job.title,
           description: job.description,
           location: `${job.location}, ${job.country}`,
@@ -1227,6 +1263,33 @@ export default function PostJobPage() {
                     </div>
                   </div>
 
+                  <div className="border rounded-lg p-4 space-y-4 bg-gray-50">
+                    <div>
+                      <h4 className="font-semibold text-[#1d2c44]">{c.billing.accountTitle}</h4>
+                      <p className="text-xs text-muted-foreground mt-1">{c.billing.accountHint}</p>
+                    </div>
+                    <div className="grid md:grid-cols-2 gap-4">
+                      <div>
+                        <Label>{c.billing.password}</Label>
+                        <Input
+                          type="password"
+                          placeholder={c.billing.passwordPlaceholder}
+                          value={billing.password}
+                          onChange={(e) => setBilling({ ...billing, password: e.target.value })}
+                        />
+                      </div>
+                      <div>
+                        <Label>{c.billing.confirmPassword}</Label>
+                        <Input
+                          type="password"
+                          placeholder={c.billing.confirmPasswordPlaceholder}
+                          value={billing.confirmPassword}
+                          onChange={(e) => setBilling({ ...billing, confirmPassword: e.target.value })}
+                        />
+                      </div>
+                    </div>
+                  </div>
+
                   <div>
                     <Label>{c.billing.billingAddress}</Label>
                     <textarea