docs: 更新协议文档，删除废弃计划文档

- 更新 http-error-codes, user-points-chat-data-protocol
- 更新 divination-run-protocol, profile-protocol
- 删除废弃的后端和前端设计计划文档

backend/src/v1/agent/schemas.py

@@ -7,6 +7,7 @@ from uuid import UUID
 
 from pydantic import BaseModel, ConfigDict, Field
 
+from schemas.agent.runtime_models import ErrorInfo
 from schemas.domain.divination import DerivedDivinationData
 
 
@@ -21,6 +22,8 @@ class AgentRepositoryLike(Protocol):
 
     async def rollback(self) -> None: ...
 
+    async def delete_session(self, *, session_id: str) -> None: ...
+
     async def get_history_day(
         self,
         *,
@@ -29,6 +32,13 @@ class AgentRepositoryLike(Protocol):
         visibility_mask: int | None = None,
     ) -> dict[str, object] | None: ...
 
+    async def get_session_messages(
+        self,
+        *,
+        session_id: str,
+        visibility_mask: int | None = None,
+    ) -> list[dict[str, object]]: ...
+
     async def get_latest_session_id_for_user(self, *, user_id: str) -> str | None: ...
 
     async def get_latest_assistant_messages_by_user_sessions(
@@ -186,6 +196,7 @@ class HistoryMessage(BaseModel):
     model_config = ConfigDict(populate_by_name=True, serialize_by_alias=True)
 
     id: str = Field(description="Message UUID")
+    thread_id: str = Field(alias="threadId", description="Owning session UUID")
     seq: int = Field(description="Message sequence number")
     role: Literal["user", "assistant"] = Field(
         description="Message role: user | assistant"
@@ -213,6 +224,7 @@ class HistoryAgentOutput(BaseModel):
     advice: list[str] = Field(default_factory=list)
     keywords: list[str] = Field(default_factory=list)
     answer: str | None = None
+    error: ErrorInfo | None = None
     divination_derived: DerivedDivinationData | None = None
 
 
@@ -221,7 +233,10 @@ class HistorySnapshotResponse(BaseModel):
 
     model_config = ConfigDict(populate_by_name=True, serialize_by_alias=True)
 
-    scope: str = Field(default="history_day")
+    scope: str = Field(
+        default="history_session_full",
+        description="history_session_full | history_sessions_latest_assistant",
+    )
     thread_id: str | None = Field(default=None, alias="threadId")
     day: str | None = None
     has_more: bool = Field(default=False, alias="hasMore")