feat(engine): 添加MCP连接管理和工具集成功能

- 集成MCP连接管理器，支持MCP服务器连接
- 添加多种内置工具：ClarifyTool、CronTool、DelegateTool、ExecuteCodeTool、
  PatchFileTool、ProcessTool、SendMessageTool、SpawnTool、TerminalTool、
  TodoTool、WebFetchTool、WebSearchTool、WriteFileTool等
- 实现工具注册和装配功能
- 添加技能选择上下文参数
- 支持思考模式控制参数thinking_enabled

feat(coordinator): 重构任务执行计划器参数命名

- 将learning_candidate_enabled重命名为allow_candidate_generation
- 更新TeamGraphScheduler中的参数传递
- 修改LocalAgentRunner中的相关参数处理
- 更新README文档中的相应描述

refactor(context): 标准化工具调用参数格式

- 添加_json导入用于参数序列化
- 实现_provider_tool_calls方法标准化OpenAI兼容的工具调用载荷
- 修复工具调用中参数非字符串类型的序列化问题

refactor(session): 优化消息历史记录过滤逻辑

- 修改get_messages_as_conversation为基于运行状态过滤消息
- 排除未完成、失败或错误结束的运行记录
- 改进对话历史的可见性控制机制

fix(store): 修复FTS索引重建逻辑

- 添加异常处理防止FTS索引创建失败
- 实现_rebuild_fts_index方法重新构建全文搜索索引
- 优化索引触发器和表的维护流程

app-instance/backend/beaver/tasks/skill_resolver.py

@@ -11,7 +11,7 @@ from beaver.engine.providers import ProviderBundle
 from beaver.skills.assembler.embedding_retriever import SkillEmbeddingRetriever
 from beaver.skills.catalog.loader import SkillsLoader
 from beaver.skills.drafts import DraftService
-from beaver.skills.learning import MissingSkillSynthesizer
+from beaver.skills.learning import EphemeralGuidanceSynthesizer
 from beaver.tasks.models import TaskRecord
 
 
@@ -21,8 +21,8 @@ class SkillResolutionReport:
     skill_query: str
     required_capabilities: list[str] = field(default_factory=list)
     selected_skill_names: list[str] = field(default_factory=list)
-    generated_skill_draft_id: str | None = None
-    generated_skill_name: str | None = None
+    ephemeral_guidance_id: str | None = None
+    ephemeral_guidance_name: str | None = None
     ephemeral_used: bool = False
     reason: str = ""
 
@@ -32,15 +32,15 @@ class SkillResolutionReport:
             "skill_query": self.skill_query,
             "required_capabilities": list(self.required_capabilities),
             "selected_skill_names": list(self.selected_skill_names),
-            "generated_skill_draft_id": self.generated_skill_draft_id,
-            "generated_skill_name": self.generated_skill_name,
+            "ephemeral_guidance_id": self.ephemeral_guidance_id,
+            "ephemeral_guidance_name": self.ephemeral_guidance_name,
             "ephemeral_used": self.ephemeral_used,
             "reason": self.reason,
         }
 
 
 class TaskSkillResolver:
-    """Pins published or draft-only skills onto generic team nodes."""
+    """Pins published skills or one-run guidance onto generic team nodes."""
 
     def __init__(
         self,
@@ -48,12 +48,12 @@ class TaskSkillResolver:
         skills_loader: SkillsLoader,
         draft_service: DraftService,
         retriever: SkillEmbeddingRetriever | None = None,
-        missing_skill_synthesizer: MissingSkillSynthesizer | None = None,
+        missing_skill_synthesizer: EphemeralGuidanceSynthesizer | None = None,
     ) -> None:
         self.skills_loader = skills_loader
         self.draft_service = draft_service
         self.retriever = retriever or SkillEmbeddingRetriever()
-        self.missing_skill_synthesizer = missing_skill_synthesizer or MissingSkillSynthesizer()
+        self.missing_skill_synthesizer = missing_skill_synthesizer or EphemeralGuidanceSynthesizer()
 
     async def resolve_graph(
         self,
@@ -138,7 +138,6 @@ class TaskSkillResolver:
             skill_query=skill_query,
             required_capabilities=required_capabilities,
             provider_bundle=provider_bundle,
-            draft_service=self.draft_service,
         )
         resolved = self._generic_node(
             node,
@@ -149,8 +148,8 @@ class TaskSkillResolver:
                 "skill_query": skill_query,
                 "required_capabilities": required_capabilities,
                 "selected_skill_names": [],
-                "generated_skill_draft_id": missing.draft.draft_id,
-                "generated_skill_name": missing.draft.skill_name,
+                "ephemeral_guidance_id": missing.guidance_id,
+                "ephemeral_guidance_name": missing.guidance_name,
                 "ephemeral_skill_names": [missing.skill_context.name],
             },
         )
@@ -158,10 +157,10 @@ class TaskSkillResolver:
             node_id=node.node_id,
             skill_query=skill_query,
             required_capabilities=required_capabilities,
-            generated_skill_draft_id=missing.draft.draft_id,
-            generated_skill_name=missing.draft.skill_name,
+            ephemeral_guidance_id=missing.guidance_id,
+            ephemeral_guidance_name=missing.guidance_name,
             ephemeral_used=True,
-            reason="generated draft-only skill for missing sub-agent guidance",
+            reason="generated ephemeral guidance for missing sub-agent capability",
         )
 
     async def _select_published_skills(self, *, query: str, provider_bundle: ProviderBundle) -> list[str]:
@@ -215,7 +214,7 @@ class TaskSkillResolver:
                 ],
                 tools=None,
                 model=model,
-                max_tokens=512,
+                max_tokens=2048,
                 temperature=0,
             )
             parsed = self._parse_names(response.content or "")