Beschreibe Status-Endpunkte in der API-Meta

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

server/backend/internal/httpapi/meta.go

@@ -15,6 +15,16 @@ func handleMeta(w http.ResponseWriter, _ *http.Request) {
 					"method": http.MethodPost,
 					"path":   "/api/v1/tools/message-wall/resolve",
 				},
+				{
+					"name":   "screen-status-list",
+					"method": http.MethodGet,
+					"path":   "/api/v1/screens/status",
+				},
+				{
+					"name":   "screen-status-detail",
+					"method": http.MethodGet,
+					"path":   "/api/v1/screens/{screenId}/status",
+				},
 			},
 		},
 	})

server/backend/internal/httpapi/router_test.go

@@ -109,13 +109,21 @@ func TestRouterMeta(t *testing.T) {
 		t.Fatalf("api.health = %q, want %q", got, want)
 	}
 
-	if got, want := len(response.API.Tools), 1; got != want {
+	if got, want := len(response.API.Tools), 3; got != want {
 		t.Fatalf("len(api.tools) = %d, want %d", got, want)
 	}
 
 	if got, want := response.API.Tools[0].Path, "/api/v1/tools/message-wall/resolve"; got != want {
 		t.Fatalf("api.tools[0].path = %q, want %q", got, want)
 	}
+
+	if got, want := response.API.Tools[1].Path, "/api/v1/screens/status"; got != want {
+		t.Fatalf("api.tools[1].path = %q, want %q", got, want)
+	}
+
+	if got, want := response.API.Tools[2].Path, "/api/v1/screens/{screenId}/status"; got != want {
+		t.Fatalf("api.tools[2].path = %q, want %q", got, want)
+	}
 }
 
 func TestRouterPlayerStatusRoute(t *testing.T) {