feat: Agregar campo id (UUID v4) a MonitoredApp

Cada app registrada ahora tiene un identificador único UUID v4.
Se agrega la dependencia uuid al proyecto y se asegura que todas
las rutas de creación de MonitoredApp generen un id único.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Cargo.lock

@@ -1350,6 +1350,7 @@ dependencies = [
  "tokio",
  "tokio-stream",
  "tower-http",
+ "uuid",
 ]
 
 [[package]]
@@ -1711,6 +1712,18 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
 
+[[package]]
+name = "uuid"
+version = "1.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2e054861b4bd027cd373e18e8d8d8e6548085000e41290d95ce0c373a654b4a"
+dependencies = [
+ "getrandom 0.3.4",
+ "js-sys",
+ "serde_core",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "vcpkg"
 version = "0.2.15"