Se crea funcionalidad de exportar pdf desde front y generar historial de version de cambios se agrego una libreri jspdf

src/hooks/useSupabaseUpdateWithHistory.ts

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+import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { supabase } from "@/auth/supabase";
+
+/**
+ * Hook genérico para actualizar una tabla y guardar respaldo en historico_cambios
+ * 
+ * @param tableName Nombre de la tabla a actualizar
+ * @param idKey Campo que se usa para hacer eq (por defecto 'id')
+ */
+export function useSupabaseUpdateWithHistory<T extends Record<string, any>>(
+  tableName: string,
+  idKey: keyof T = "id" as keyof T
+) {
+  const qc = useQueryClient();
+
+  // Generar diferencias tipo JSON Patch
+  function generateDiff(oldData: T, newData: Partial<T>) {
+    const changes: any[] = [];
+    for (const key of Object.keys(newData)) {
+      const oldValue = (oldData as any)[key];
+      const newValue = (newData as any)[key];
+      if (newValue !== undefined && newValue !== oldValue) {
+        changes.push({
+          op: "replace",
+          path: `/${key}`,
+          from: oldValue,
+          value: newValue,
+        });
+      }
+    }
+    return changes;
+  }
+
+  const mutation = useMutation({
+    mutationFn: async ({
+      oldData,
+      newData,
+    }: {
+      oldData: T;
+      newData: Partial<T>;
+    }) => {
+      const diff = generateDiff(oldData, newData);
+
+      if (diff.length > 0) {
+        const { error: backupError } = await supabase
+          .from("historico_cambios")
+          .insert({
+            id_plan_estudios: oldData.id ?? null, // ajusta si es otra tabla
+            tabla_afectada: tableName,
+            json_cambios: diff,
+            created_at: new Date().toISOString(),
+          });
+
+        if (backupError) throw backupError;
+      }
+
+      const { error } = await supabase
+        .from(tableName)
+        .update(newData)
+        .eq(idKey as string, oldData[idKey]);
+
+      if (error) throw error;
+    },
+  });
+
+  return { mutation };
+}