feat(right_arm): router skeleton con /state e /activate

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

src/presa_mano/main.py

@@ -18,6 +18,7 @@ from .api import (
     models_routes,
     perception_routes,
     posture_routes,
+    right_arm_routes,
     robot_routes,
     wrist_routes,
     work_plane_routes,
@@ -45,6 +46,7 @@ app.include_router(models_routes.router, prefix="/api/models", tags=["models"])
 app.include_router(wrist_routes.router, prefix="/api/wrist", tags=["wrist"])
 app.include_router(posture_routes.router, prefix="/api/posture", tags=["posture"])
 app.include_router(robot_routes.router, prefix="/api/robot", tags=["robot"])
+app.include_router(right_arm_routes.router, prefix="/api/right_arm", tags=["right_arm"])
 app.include_router(work_plane_routes.router, prefix="/api/work_plane", tags=["work_plane"])
 
 WEB_DIR = Path(__file__).resolve().parents[2] / "web"