feat: initial commit - EvoTraders project

量化交易多智能体系统，包含：
- 分析师、投资组合经理、风险经理等智能体
- 股票分析、投资组合管理、风险控制工具
- React 前端界面
- FastAPI 后端服务

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

backend/data/schema.py

@@ -0,0 +1,184 @@
+# -*- coding: utf-8 -*-
+from pydantic import BaseModel
+
+
+class Price(BaseModel):
+    open: float
+    close: float
+    high: float
+    low: float
+    volume: int
+    time: str
+
+
+class PriceResponse(BaseModel):
+    ticker: str
+    prices: list[Price]
+
+
+class FinancialMetrics(BaseModel):
+    ticker: str
+    report_period: str
+    period: str
+    currency: str
+    market_cap: float | None
+    enterprise_value: float | None
+    price_to_earnings_ratio: float | None
+    price_to_book_ratio: float | None
+    price_to_sales_ratio: float | None
+    enterprise_value_to_ebitda_ratio: float | None
+    enterprise_value_to_revenue_ratio: float | None
+    free_cash_flow_yield: float | None
+    peg_ratio: float | None
+    gross_margin: float | None
+    operating_margin: float | None
+    net_margin: float | None
+    return_on_equity: float | None
+    return_on_assets: float | None
+    return_on_invested_capital: float | None
+    asset_turnover: float | None
+    inventory_turnover: float | None
+    receivables_turnover: float | None
+    days_sales_outstanding: float | None
+    operating_cycle: float | None
+    working_capital_turnover: float | None
+    current_ratio: float | None
+    quick_ratio: float | None
+    cash_ratio: float | None
+    operating_cash_flow_ratio: float | None
+    debt_to_equity: float | None
+    debt_to_assets: float | None
+    interest_coverage: float | None
+    revenue_growth: float | None
+    earnings_growth: float | None
+    book_value_growth: float | None
+    earnings_per_share_growth: float | None
+    free_cash_flow_growth: float | None
+    operating_income_growth: float | None
+    ebitda_growth: float | None
+    payout_ratio: float | None
+    earnings_per_share: float | None
+    book_value_per_share: float | None
+    free_cash_flow_per_share: float | None
+
+
+class FinancialMetricsResponse(BaseModel):
+    financial_metrics: list[FinancialMetrics]
+
+
+class LineItem(BaseModel):
+    ticker: str
+    report_period: str
+    period: str
+    currency: str
+
+    # Allow additional fields dynamically
+    model_config = {"extra": "allow"}
+
+
+class LineItemResponse(BaseModel):
+    search_results: list[LineItem]
+
+
+class InsiderTrade(BaseModel):
+    ticker: str
+    issuer: str | None
+    name: str | None
+    title: str | None
+    is_board_director: bool | None
+    transaction_date: str | None
+    transaction_shares: float | None
+    transaction_price_per_share: float | None
+    transaction_value: float | None
+    shares_owned_before_transaction: float | None
+    shares_owned_after_transaction: float | None
+    security_title: str | None
+    filing_date: str
+
+
+class InsiderTradeResponse(BaseModel):
+    insider_trades: list[InsiderTrade]
+
+
+class CompanyNews(BaseModel):
+    category: str | None = None
+    ticker: str
+    title: str
+    related: str | None = None
+    source: str
+    date: str | None = None
+    url: str
+    summary: str | None = None
+
+
+class CompanyNewsResponse(BaseModel):
+    news: list[CompanyNews]
+
+
+class CompanyFacts(BaseModel):
+    ticker: str
+    name: str
+    cik: str | None = None
+    industry: str | None = None
+    sector: str | None = None
+    category: str | None = None
+    exchange: str | None = None
+    is_active: bool | None = None
+    listing_date: str | None = None
+    location: str | None = None
+    market_cap: float | None = None
+    number_of_employees: int | None = None
+    sec_filings_url: str | None = None
+    sic_code: str | None = None
+    sic_industry: str | None = None
+    sic_sector: str | None = None
+    website_url: str | None = None
+    weighted_average_shares: int | None = None
+
+
+class CompanyFactsResponse(BaseModel):
+    company_facts: CompanyFacts
+
+
+class Position(BaseModel):
+    """Position information - for Portfolio mode"""
+
+    long: int = 0  # Long position quantity (shares)
+    short: int = 0  # Short position quantity (shares)
+    long_cost_basis: float = 0.0  # Long position average cost
+    short_cost_basis: float = 0.0  # Short position average cost
+
+
+class Portfolio(BaseModel):
+    """Portfolio - for Portfolio mode"""
+
+    cash: float = 100000.0  # Available cash
+    positions: dict[str, Position] = {}  # ticker -> Position mapping
+    # Margin requirement (0.0 means shorting disabled, 0.5 means 50% margin)
+    margin_requirement: float = 0.0
+    margin_used: float = 0.0  # Margin used
+
+
+class AnalystSignal(BaseModel):
+    signal: str | None = None
+    confidence: float | None = None
+    reasoning: dict | str | None = None
+    max_position_size: float | None = None  # For risk management signals
+
+
+class TickerAnalysis(BaseModel):
+    ticker: str
+    analyst_signals: dict[str, AnalystSignal]  # agent_name -> signal mapping
+
+
+class AgentStateData(BaseModel):
+    tickers: list[str]
+    portfolio: Portfolio
+    start_date: str
+    end_date: str
+    ticker_analyses: dict[str, TickerAnalysis]  # ticker -> analysis mapping
+
+
+class AgentStateMetadata(BaseModel):
+    show_reasoning: bool = False
+    model_config = {"extra": "allow"}