feat(mcp): tools de idiomas y traducciones

- Nueva categoria tools/languages: list_web_languages,
  get_record_translations y set_record_translations (registros, config,
  textos_generales y vars de modulo via builder_custom).
- Param lang opcional en list_table_records y get_record
  (options.translates de CocoDB).
- Docs actualizados (03/04/06/09/11b + ACAI_ENDPOINTS) con el modelo de
  cms_traducciones y los workflows de traduccion.

mcp-server/tools/records/getRecord.js

@@ -20,9 +20,10 @@ Examples:
             recordNum: z.string().describe("Record 'num' (primary key)"),
             loadUploads: z.boolean().optional().default(true).describe("Load upload field data (default: true)"),
             loadRelations: z.boolean().optional().default(true).describe("Resolve foreign key relations (default: true)"),
+            lang: z.string().optional().describe("Language prefix (e.g. 'en'). Returns translated values for translatable fields"),
         }),
         { readOnlyHint: true, destructiveHint: false },
-        withAuth(async ({ tableName, recordNum, loadUploads = true, loadRelations = true }, extra) => {
+        withAuth(async ({ tableName, recordNum, loadUploads = true, loadRelations = true, lang }, extra) => {
             try {
                 const validationError = validateRequired(
                     { tableName, recordNum },
@@ -53,6 +54,11 @@ Examples:
                     payload.options.ignoreSchema = true;
                 }
 
+                // Si se pide un idioma, el motor CocoDB aplica la traduccion en lectura.
+                if (lang) {
+                    payload.options.translates = lang;
+                }
+
                 const response = await AcaiHttpClient.postCmsApi(
                     credentials,
                     "get",