feat: planner/worker 态势移出 system 入首轮 user + bench 提示词/调度器优化 + plan 心跳前端对齐 10min

- agent: planner/worker 把易变运行期数据(意图/态势/收尾词)从 system 移到本轮 user 输入,
  system 每轮/每 session 稳定更利于缓存;移除 worker 的 cross-trace 工具引导段
- web: plan 心跳前端默认/下限对齐后端 10min(600s),清理 300 旧注释
- bench: challenge_review 经验抽取结构化(区分 confirmed/inferred/negative、限制"已穷尽"、
  结构化 hint 格式);worker.md 补深度挖掘/目录扫描引导;scheduler 加 FAST_POLL 快轮询
- deps: norma v0.2.8 → v0.2.9

go.sum

@@ -1,5 +1,5 @@
-github.com/Autumn-27/norma v0.2.8 h1:hfNwGUC4Yt2TEwxIlPvhi0g3Xy4ILajNI2HGPbWNwGA=
-github.com/Autumn-27/norma v0.2.8/go.mod h1:BudWrf7iHl96FgHqFr/HwN3mKYmGjJDt+xL2ZHXfFZw=
+github.com/Autumn-27/norma v0.2.9 h1:VTt8Oe7XoiV85Dc+QOPu+zQ7IykQRm2aDTEbLEzbBe4=
+github.com/Autumn-27/norma v0.2.9/go.mod h1:BudWrf7iHl96FgHqFr/HwN3mKYmGjJDt+xL2ZHXfFZw=
 github.com/andybalholm/brotli v1.2.1 h1:R+f5xP285VArJDRgowrfb9DqL18yVK0gKAW/F+eTWro=
 github.com/andybalholm/brotli v1.2.1/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
 github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 h1:DklsrG3dyBCFEj5IhUbnKptjxatkF07cF2ak3yi77so=