feat: agregar agente build-wails para apps desktop

Nuevo agente para crear y compilar aplicaciones Wails (Go + React).
Soporta compilación cross-platform: Linux, Windows, macOS.
Incluye script de creación de proyecto con DevFactory y frontend-lib integrados.

.claude/agents/build-wails/templates/wails.json

@@ -0,0 +1,22 @@
+{
+  "$schema": "https://wails.io/schemas/config.v2.json",
+  "name": "{{APP_NAME}}",
+  "outputfilename": "{{APP_NAME}}",
+  "frontend:dir": "frontend",
+  "frontend:install": "pnpm install",
+  "frontend:build": "pnpm build",
+  "frontend:dev:watcher": "pnpm dev",
+  "frontend:dev:serverUrl": "auto",
+  "wailsjsdir": "frontend/src/wailsjs",
+  "author": {
+    "name": "{{AUTHOR_NAME}}",
+    "email": "{{AUTHOR_EMAIL}}"
+  },
+  "info": {
+    "companyName": "{{COMPANY_NAME}}",
+    "productName": "{{PRODUCT_NAME}}",
+    "productVersion": "1.0.0",
+    "copyright": "Copyright {{YEAR}}",
+    "comments": "Built with Wails"
+  }
+}