feat: complete UI/UX refinement, email flow updates, and deep black theme

- Updated all email templates to a clean light theme and changed button text to 'Finalizar Cadastro'.

- Enforced a strict 15-minute expiration on all auth/reset tokens.

- Created SetupAccount flow distinct from ResetPassword to capture user name during admin init.

- Refined dark mode to a premium True Black (Onyx) palette using Zinc.

- Fixed Dashboard KPI visibility and true period-over-period trend logic.

- Enhanced TeamManagement with global tenant filtering for Super Admins.

- Implemented secure User URL routing via slugs instead of raw UUIDs.

- Enforced strict Agent-level RBAC for viewing attendances.

services/dataService.ts

@@ -234,17 +234,19 @@ export const updateTeam = async (id: string, teamData: any): Promise<boolean> =>
   }
 };
 
-export const createTenant = async (tenantData: any): Promise<boolean> => {
+export const createTenant = async (tenantData: any): Promise<{ success: boolean; message?: string }> => {
   try {
     const response = await fetch(`${API_URL}/tenants`, {
       method: 'POST',
       headers: getHeaders(),
       body: JSON.stringify(tenantData)
     });
-    return response.ok;
-  } catch (error) {
+    const data = await response.json().catch(() => null);
+    if (!response.ok) throw new Error(data?.error || 'Erro ao criar organização');
+    return { success: true, message: data?.message || 'Organização criada!' };
+  } catch (error: any) {
     console.error("API Error (createTenant):", error);
-    return false;
+    return { success: false, message: error.message };
   }
 };
 
@@ -352,11 +354,11 @@ export const forgotPassword = async (email: string): Promise<string> => {
   return data.message;
 };
 
-export const resetPassword = async (password: string, token: string): Promise<string> => {
+export const resetPassword = async (password: string, token: string, name?: string): Promise<string> => {
   const response = await fetch(`${API_URL}/auth/reset-password`, {
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify({ password, token })
+    body: JSON.stringify({ password, token, name })
   });
   
   const contentType = response.headers.get("content-type");