feat: 微服务架构拆分和前后端优化

后端:
- 拆分出 agent_service, runtime_service, trading_service, news_service
- Gateway 模块化拆分 (gateway_*.py)
- 添加 domains/ 领域层
- 新增 control_client, runtime_client
- 更新 start-dev.sh 支持 split 服务模式

前端:
- 完善 API 服务层 (newsApi, tradingApi)
- 更新 vite.config.js
- Explain 组件优化

测试:
- 添加多个服务 app 测试

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

shared/client/trading_client.py

@@ -5,8 +5,7 @@ import httpx
 
 from shared.schema.price import PriceResponse
 from shared.schema.financial import FinancialMetricsResponse, LineItemResponse
-from shared.schema.market import InsiderTradeResponse, CompanyFactsResponse
-from shared.schema.portfolio import Portfolio
+from shared.schema.market import InsiderTradeResponse
 
 
 class TradingServiceClient:
@@ -107,6 +106,8 @@ class TradingServiceClient:
     async def get_insider_trades(
         self,
         ticker: str,
+        end_date: str | None = None,
+        start_date: str | None = None,
         limit: int | None = None,
     ) -> InsiderTradeResponse:
         """Get insider trades for a ticker.
@@ -119,45 +120,16 @@ class TradingServiceClient:
             InsiderTradeResponse with insider trade data.
         """
         params = {"ticker": ticker}
+        if start_date:
+            params["start_date"] = start_date
+        if end_date:
+            params["end_date"] = end_date
         if limit:
             params["limit"] = limit
         response = await self._client.get("/api/insider-trades", params=params)
         response.raise_for_status()
         return InsiderTradeResponse.model_validate(response.json())
 
-    async def get_portfolio(self) -> Portfolio:
-        """Get the current portfolio.
-
-        Returns:
-            Portfolio with current positions and cash.
-        """
-        response = await self._client.get("/api/portfolio")
-        response.raise_for_status()
-        return Portfolio.model_validate(response.json())
-
-    async def post_trades(self, trades: list[dict]) -> dict:
-        """Submit trades for execution.
-
-        Args:
-            trades: List of trade orders.
-
-        Returns:
-            Dictionary with trade execution results.
-        """
-        response = await self._client.post("/api/trades", json=trades)
-        response.raise_for_status()
-        return response.json()
-
-    async def post_settle(self) -> dict:
-        """Settle all pending trades.
-
-        Returns:
-            Dictionary with settlement results.
-        """
-        response = await self._client.post("/api/settle")
-        response.raise_for_status()
-        return response.json()
-
     async def get_market_status(self) -> dict:
         """Get current market status.
 
@@ -168,40 +140,32 @@ class TradingServiceClient:
         response.raise_for_status()
         return response.json()
 
-    async def get_company_facts(self, ticker: str) -> CompanyFactsResponse:
-        """Get company facts for a ticker.
-
-        Args:
-            ticker: Stock ticker symbol.
-
-        Returns:
-            CompanyFactsResponse with company information.
-        """
-        response = await self._client.get(f"/api/company/{ticker}/facts")
+    async def get_market_cap(self, ticker: str, end_date: str) -> dict:
+        """Get market cap for a ticker/date."""
+        response = await self._client.get(
+            "/api/market-cap",
+            params={"ticker": ticker, "end_date": end_date},
+        )
         response.raise_for_status()
-        return CompanyFactsResponse.model_validate(response.json())
+        return response.json()
 
     async def get_line_items(
         self,
         ticker: str,
-        statement_type: str | None = None,
-        period: str | None = None,
+        line_items: list[str],
+        end_date: str,
+        period: str = "ttm",
+        limit: int = 10,
     ) -> LineItemResponse:
-        """Get line items (financial statement data) for a ticker.
-
-        Args:
-            ticker: Stock ticker symbol.
-            statement_type: Type of statement (income, balance, cash_flow).
-            period: Reporting period.
-
-        Returns:
-            LineItemResponse with financial statement data.
-        """
-        params = {"ticker": ticker}
-        if statement_type:
-            params["statement_type"] = statement_type
-        if period:
-            params["period"] = period
+        """Get line-item search results for a ticker/date."""
+        params: list[tuple[str, str | int]] = [
+            ("ticker", ticker),
+            ("end_date", end_date),
+            ("period", period),
+            ("limit", limit),
+        ]
+        for item in line_items:
+            params.append(("line_items", item))
         response = await self._client.get("/api/line-items", params=params)
         response.raise_for_status()
         return LineItemResponse.model_validate(response.json())