feat: Puente Mayúscula-Minúscula + TTS SpeechSynthesis + E2E fixes

curriculum/index.ts

@@ -0,0 +1,46 @@
+import type { Exercise, Stage, TopicCurriculum } from "./types"
+
+const lecturaModules: Record<string, Stage> = {}
+const numerosModules: Record<string, Stage> = {}
+
+async function loadStages(
+  topic: string,
+  modules: Record<string, Stage>,
+  stageFiles: number[],
+) {
+  for (const s of stageFiles) {
+    try {
+      const mod = await import(`./${topic}/etapa-${s}`)
+      modules[s] = mod.default
+    } catch {
+      // stage not yet implemented
+    }
+  }
+}
+
+let lecturaLoaded = false
+let numerosLoaded = false
+
+export function getAllLecturaExercises(): Exercise[] {
+  const stages = Object.values(getLecturaStages())
+  return stages.flatMap((s) => s.exercises || [])
+}
+
+export function getLecturaStages(): Record<string, Stage> {
+  return lecturaModules as Record<string, Stage>
+}
+
+export function getNumerosStages(): Record<string, Stage> {
+  return numerosModules as Record<string, Stage>
+}
+
+export async function initCurriculum() {
+  if (!lecturaLoaded) {
+    await loadStages("lectura", lecturaModules, [1, 2, 3, 4, 5, 6, 7, 8, 9])
+    lecturaLoaded = true
+  }
+  if (!numerosLoaded) {
+    await loadStages("numeros", numerosModules, [1, 2, 3, 4, 5, 6, 7, 8])
+    numerosLoaded = true
+  }
+}