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",
+        ]

backend/app/models/chat.py

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+from datetime import datetime, timezone
+
+from beanie import Document, PydanticObjectId
+from pydantic import BaseModel, Field
+
+
+class ChatMessage(BaseModel):
+    role: str  # user / assistant
+    content: str
+    timestamp: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
+
+
+class ChatSession(Document):
+    user_id: PydanticObjectId
+    report_id: PydanticObjectId
+    messages: list[ChatMessage] = Field(default_factory=list)
+    created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
+    updated_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
+
+    class Settings:
+        name = "chat_sessions"
+        indexes = [
+            [("user_id", 1), ("report_id", 1)],
+        ]

backend/app/models/checkup.py

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+from datetime import datetime, timezone
+from typing import Optional
+
+from beanie import Document, PydanticObjectId
+from pydantic import BaseModel, Field
+
+
+class CheckupItem(BaseModel):
+    title: str
+    week: int
+    date: Optional[str] = None
+    items: list[str] = Field(default_factory=list)
+    preparations: list[str] = Field(default_factory=list)
+    notes: str = ""
+    status: str = "upcoming"  # upcoming / completed / missed
+    importance: str = "medium"  # high / medium / low
+    report_ids: list[str] = Field(default_factory=list)  # linked report IDs
+
+
+class CheckupPlan(Document):
+    user_id: PydanticObjectId
+    checkups: list[CheckupItem] = Field(default_factory=list)
+    created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
+    updated_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
+
+    class Settings:
+        name = "checkup_plans"
+        indexes = [
+            "user_id",
+        ]

backend/app/models/report.py

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+from datetime import datetime, timezone
+from typing import Optional
+
+from beanie import Document, PydanticObjectId
+from pydantic import BaseModel, Field
+
+
+class DataItem(BaseModel):
+    """单个检查指标"""
+    name: str
+    value: str
+    unit: str = ""
+    reference_range: str = ""
+    status: str = "normal"  # normal / high / low
+    category: str = ""  # 血液检查 / 激素水平 / 尿常规 etc.
+
+
+class Report(Document):
+    user_id: PydanticObjectId
+    report_type: str = ""  # 血常规 / B超 / 尿常规 etc.
+    pregnancy_week: Optional[int] = None
+    report_date: Optional[str] = None  # 报告日期 YYYY-MM-DD
+
+    # Images
+    image_urls: list[str] = Field(default_factory=list)
+
+    # OCR results
+    ocr_raw_text: Optional[str] = None
+    data_items: list[DataItem] = Field(default_factory=list)
+
+    # User additions
+    symptoms: Optional[list[str]] = None  # 自觉症状
+    notes: Optional[str] = None  # 备注
+
+    # Privacy fields (auto-masked)
+    patient_name: Optional[str] = None
+    patient_id_masked: Optional[str] = None
+
+    # Status
+    status: str = "pending"  # pending / verified / analyzed
+    overall_status: str = "normal"  # normal / attention / warning
+
+    created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
+    updated_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
+
+    class Settings:
+        name = "reports"
+        indexes = [
+            "user_id",
+        ]

backend/app/models/user.py

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+from datetime import datetime, timezone
+from typing import Optional
+
+from beanie import Document
+from pymongo import IndexModel, ASCENDING
+from pydantic import BaseModel, Field
+
+
+class EmergencyContact(BaseModel):
+    name: str = ""
+    relation: str = ""
+    phone: str = ""
+
+
+class User(Document):
+    openid: str = Field(..., unique=True)
+    union_id: Optional[str] = None
+    session_key: Optional[str] = None
+
+    # Basic info
+    name: str = ""
+    phone: Optional[str] = None
+    age: Optional[int] = None
+    height: Optional[float] = None  # cm
+    pre_pregnancy_weight: Optional[float] = None  # kg
+    current_weight: Optional[float] = None  # kg
+    blood_type: Optional[str] = None
+    allergies: list[str] = Field(default_factory=list)
+    medical_history: list[str] = Field(default_factory=list)
+
+    # Pregnancy info
+    last_period_date: Optional[datetime] = None
+    due_date: Optional[datetime] = None
+    pregnancy_week: Optional[int] = None
+    pregnancy_day: Optional[int] = None
+    multiple_pregnancy: Optional[str] = None  # 单胎/双胎/三胎+
+    pregnancy_count: Optional[int] = None  # 第几次怀孕
+
+    emergency_contact: EmergencyContact = Field(default_factory=EmergencyContact)
+
+    # Status
+    is_onboarded: bool = False
+    avatar_url: Optional[str] = None
+    created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
+    updated_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
+
+    class Settings:
+        name = "users"
+        indexes = [
+            IndexModel(
+                [("phone", ASCENDING)],
+                unique=True,
+                partialFilterExpression={"phone": {"$type": "string"}},
+            ),
+        ]