feat: implement DetailDialog component for PDF viewing and downloading; refactor API calls to use environment variables

src/components/planes/AddAsignaturaButton.tsx

@@ -57,7 +57,7 @@ export function AddAsignaturaButton({ planId, onAdded }: { planId: string; onAdd
     if (!canIA) return
     setSaving(true)
     try {
-      const res = await fetch("https://genesis-engine.apps.lci.ulsa.mx/api/generar/asignatura", {
+      const res = await fetch(`${import.meta.env.VITE_BACK_ORIGIN}/api/generar/asignatura`, {
         method: "POST",
         headers: { "Content-Type": "application/json" },
         body: JSON.stringify({ planEstudiosId: planId, prompt: iaPrompt, semestre: iaSemestre.trim() ? Number(iaSemestre) : undefined, insert: true }),

src/components/planes/AdjustAIButton.tsx

@@ -14,7 +14,7 @@ export function AdjustAIButton({ plan }: { plan: PlanFull }) {
 
   async function apply() {
     setLoading(true)
-    await fetch('https://genesis-engine.apps.lci.ulsa.mx/api/mejorar/plan', {
+    await fetch(`${import.meta.env.VITE_BACK_ORIGIN}/api/mejorar/plan`, {
       method: 'POST', headers: { 'Content-Type': 'application/json' },
       body: JSON.stringify({ prompt, plan_id: plan.id }),
     }).catch(() => { })