feat(app): 移除内置agents并添加CORS支持和技能上传优化

移除了agents/registry.json中的所有内置agents配置，将agents数组清空。
为web应用添加了CORS中间件支持，允许指定的前端地址跨域访问。
重构了技能上传功能，增加了LLM重写机制，自动规范化上传的技能格式。
新增了工具名称提取逻辑，从技能正文中自动识别Required Tools段落。
更新了技能学习候选者和草稿的载荷结构，添加评估报告统计信息。
修改了意图路由技能的说明，改进任务状态管理逻辑。

app-instance/backend/beaver/skills/learning/worker.py

@@ -10,6 +10,7 @@ from typing import Callable
 from beaver.engine.providers import ProviderBundle
 from beaver.memory.skills import SkillLearningCandidate
 from beaver.skills.learning.pipeline import SkillLearningPipelineService
+from beaver.skills.learning.replay import ReplayRunner
 
 
 @dataclass(slots=True)
@@ -57,10 +58,12 @@ class SkillLearningWorker:
         *,
         pipeline: SkillLearningPipelineService,
         provider_bundle_factory: Callable[[], ProviderBundle],
+        replay_runner_factory: Callable[[], ReplayRunner] | None = None,
         config: SkillLearningWorkerConfig | None = None,
     ) -> None:
         self.pipeline = pipeline
         self.provider_bundle_factory = provider_bundle_factory
+        self.replay_runner_factory = replay_runner_factory
         self.config = config or SkillLearningWorkerConfig.from_env()
         self._running = False
         self._lock = asyncio.Lock()
@@ -126,6 +129,7 @@ class SkillLearningWorker:
             draft.skill_name,
             draft.draft_id,
             provider_bundle=self.provider_bundle_factory(),
+            replay_runner=self.replay_runner_factory() if self.replay_runner_factory is not None else None,
         )
         return True