Init first files

backend/app/schemas/__init__.py

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+

backend/app/schemas/auth.py

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+from pydantic import BaseModel, EmailStr
+
+
+class LoginRequest(BaseModel):
+    email: EmailStr
+    password: str
+
+
+class RefreshRequest(BaseModel):
+    refresh_token: str
+
+
+class TokenResponse(BaseModel):
+    access_token: str
+    refresh_token: str
+    token_type: str = "bearer"

backend/app/schemas/metric.py

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+from datetime import datetime
+from pydantic import BaseModel
+
+
+class MetricOut(BaseModel):
+    ts: datetime
+    metric_name: str
+    value: float
+    labels: dict
+
+
+class QueryStatOut(BaseModel):
+    ts: datetime
+    queryid: str
+    calls: int
+    total_time: float
+    mean_time: float
+    rows: int
+    query_text: str | None

backend/app/schemas/target.py

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+from datetime import datetime
+from pydantic import BaseModel, Field
+
+
+class TargetBase(BaseModel):
+    name: str
+    host: str
+    port: int = 5432
+    dbname: str
+    username: str
+    sslmode: str = "prefer"
+    tags: dict = Field(default_factory=dict)
+
+
+class TargetCreate(TargetBase):
+    password: str
+
+
+class TargetUpdate(BaseModel):
+    name: str | None = None
+    host: str | None = None
+    port: int | None = None
+    dbname: str | None = None
+    username: str | None = None
+    password: str | None = None
+    sslmode: str | None = None
+    tags: dict | None = None
+
+
+class TargetOut(TargetBase):
+    id: int
+    created_at: datetime
+
+    model_config = {"from_attributes": True}

backend/app/schemas/user.py

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+from datetime import datetime
+from pydantic import BaseModel, EmailStr
+
+
+class UserOut(BaseModel):
+    id: int
+    email: EmailStr
+    role: str
+    created_at: datetime
+
+    model_config = {"from_attributes": True}
+
+
+class UserCreate(BaseModel):
+    email: EmailStr
+    password: str
+    role: str = "viewer"
+
+
+class UserUpdate(BaseModel):
+    email: EmailStr | None = None
+    password: str | None = None
+    role: str | None = None