feat: 初始化孕育无忧全栈项目基础代码结构

完成项目初始搭建，包含后端FastAPI+MongoDB服务、前端React+Vite项目的完整基础结构，添加各类配置文件与依赖清单，涵盖核心业务初始框架。

backend/app/models/analysis.py

@@ -0,0 +1,60 @@
+from datetime import datetime, timezone
+from typing import Optional
+
+from beanie import Document, PydanticObjectId
+from pydantic import BaseModel, Field
+
+
+class IndicatorInterpretation(BaseModel):
+    """单项指标解读"""
+    name: str
+    nickname: str = ""  # 白话名称，如"氧气快递员"
+    value: str = ""
+    status: str = "normal"
+    what_is_it: str = ""  # 通俗解释
+    impact: str = ""  # 对宝宝的影响
+    suggestion: str = ""  # 行动建议
+    recheck_reminder: Optional[str] = None
+
+
+class CategoryInterpretation(BaseModel):
+    """分类解读（如血液指标、激素水平）"""
+    category: str
+    status: str = "normal"
+    indicators: list[IndicatorInterpretation] = Field(default_factory=list)
+
+
+class ActionItem(BaseModel):
+    """行动建议"""
+    content: str
+    priority: str = "medium"  # high / medium / low
+    category: str = ""  # 饮食 / 运动 / 就医 / 复查
+
+
+class Analysis(Document):
+    report_id: PydanticObjectId
+    user_id: PydanticObjectId
+
+    # Overall assessment
+    overall_status: str = "normal"  # normal / attention / warning
+    risk_level: str = "low"  # low / medium / high
+    overall_summary: str = ""  # 整体评估文案
+    emotional_summary: str = ""  # 情感化总结，如"宝宝发育良好"
+
+    # Detailed interpretations
+    categories: list[CategoryInterpretation] = Field(default_factory=list)
+
+    # Action items
+    action_items: list[ActionItem] = Field(default_factory=list)
+
+    # Tips
+    tips: list[str] = Field(default_factory=list)
+
+    created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
+
+    class Settings:
+        name = "analyses"
+        indexes = [
+            "user_id",
+            "report_id",
+        ]