chore: auto-commit (23 archivos)

- app.md
- backend/dist/assets/index-CFDWXN9Z.js
- backend/dist/index.html
- backend/handlers.go
- backend/main.go
- backend/users.go
- e2e/smoke_live.sh
- frontend/src/App.tsx
- frontend/src/api.ts
- frontend/src/components/CardChatPanel.tsx
- ...

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

run.sh

@@ -42,6 +42,10 @@ if [[ ! -d "$FRONT_DIR/node_modules" ]]; then
 fi
 
 # 3. Lanzar backend
+# KANBAN_MODULE_KEY: passphrase used to AES-GCM encrypt module config_json.
+# A stable default keeps the dev loop ergonomic; in production set this via
+# the host's secret store. Changing it invalidates previously stored modules.
+export KANBAN_MODULE_KEY="${KANBAN_MODULE_KEY:-local-dev-secret-rotate-in-prod}"
 echo ">>> Backend  http://localhost:$PORT_BACK  (db=$DB_PATH)"
 (cd "$BACK_DIR" && ./kanban --port "$PORT_BACK" --db "$DB_PATH") &
 BACK_PID=$!