Improve live analysis stability and video clip drafting

tests/e2e/helpers/mockApp.ts

@@ -581,6 +581,11 @@ export async function installAppMocks(
         shotCount: 16,
         avgSwingSpeed: 6.2,
         strokeConsistency: 82,
+        framesAnalyzed: 180,
+        keyMoments: [
+          { frame: 45, type: "shot", description: "建议保留：正手启动" },
+          { frame: 110, type: "shot", description: "建议保留：击球后收拍" },
+        ],
         createdAt: nowIso(),
       },
     ],