feat: add temp storage shelf (B prefix) support

Add _is_temp_storage_location() helper and temp_stored status to
_location_status(). Refactor register_location() state transitions to
allow normal→temp shelf changes while blocking temp→normal and temp→temp.

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

.gitignore

@@ -6,4 +6,10 @@ __pycache__/
 dist/
 build/
 .pytest_cache/
-.claude/
+.claude/
+.agents/
+# Config with secrets
+config/settings.yaml
+config/settings.local.yaml
+
+.runtime

CLAUDE.md

@@ -0,0 +1,7 @@
+# fastapi CLAUDE.md
+
+## Branch Strategy
+
+- The main branch is `master`, always kept in a releasable state
+- All new feature development must be done on a `dev` branch, created from `master`
+- After verification, merge `dev` back into `master`

README.md

@@ -11,3 +11,35 @@ source .venv/bin/activate  # Linux/Mac
 pip install -r requirements.txt
 uvicorn app.main:app --reload
 ```
+
+## Configuration
+
+Configuration is managed via YAML files in the `config/` directory.
+
+### Configuration File
+
+Edit `config/settings.yaml` to configure your environment:
+
+```yaml
+database:
+  active: sql_server  # sql_server or postgresql
+  sql_server:
+    host: your-host
+    port: 1433
+    database: your-database
+    username: your-username
+    password: your-password
+  postgresql:
+    host: your-postgres-host
+    port: 5432
+    database: your-database
+    username: your-username
+    password: your-password
+```
+
+Set `database.active` to choose the database backend. Both backends expect the
+same database name, schemas, and table structure.
+
+### Local Overrides
+
+For local development, create `config/settings.local.yaml` to override specific values without committing them.

app/api/v1/box.py

@@ -2,8 +2,20 @@ from fastapi import APIRouter, Depends, Query
 from sqlalchemy.orm import Session
 
 from app.core.database import get_db
-from app.schemas.box import BoxInfoResponse, BoxSaveRequest, BoxSaveResponse
-from app.services.box_service import get_box_info, save_box_record
+from app.schemas.box import (
+    BoxDeleteResponse,
+    BoxInfoResponse,
+    BoxSaveRequest,
+    BoxSaveResponse,
+    BoxUpdateRequest,
+    BoxUpdateResponse,
+)
+from app.services.box_service import (
+    delete_box_item,
+    get_box_info,
+    save_box_record,
+    update_box_item,
+)
 
 router = APIRouter(tags=["boxing"])
 
@@ -21,3 +33,15 @@ def box_info(
 def create_box(req: BoxSaveRequest, db: Session = Depends(get_db)):
     """保存装箱记录：将总排号记录到指定箱号中。"""
     return save_box_record(db, req)
+
+
+@router.patch("/box/{box_item_id}", response_model=BoxUpdateResponse)
+def update_box(box_item_id: int, req: BoxUpdateRequest, db: Session = Depends(get_db)):
+    """更新已分配装箱明细。"""
+    return update_box_item(db, box_item_id, req)
+
+
+@router.delete("/box/{box_item_id}", response_model=BoxDeleteResponse)
+def delete_box(box_item_id: int, db: Session = Depends(get_db)):
+    """删除误录的装箱明细。"""
+    return delete_box_item(db, box_item_id)

app/api/v1/location.py

@@ -3,8 +3,12 @@ from sqlalchemy.orm import Session
 
 from app.core.database import get_db
 from app.schemas.common import ErrorResponse
-from app.schemas.location import LocationRequest, LocationResponse
-from app.services.location_service import register_location
+from app.schemas.location import (
+    LocationRequest,
+    LocationResponse,
+    PaichaOverviewResponse,
+)
+from app.services.location_service import get_paicha_overview, register_location
 
 router = APIRouter()
 
@@ -18,7 +22,7 @@ router = APIRouter()
             "model": ErrorResponse,
         },
         409: {
-            "description": "该总排号已存在货位记录",
+            "description": "重复上架或已下架",
             "model": ErrorResponse,
         },
     },
@@ -29,4 +33,23 @@ def create_location(req: LocationRequest, db: Session = Depends(get_db)):
         zongpai_no=record.zongpai_no,
         location_code=record.location_code,
         created_at=record.created_at.isoformat(),
+        previous_location=getattr(record, "previous_location", None),
     )
+
+
+@router.get(
+    "/location/paicha-overview",
+    response_model=PaichaOverviewResponse,
+    responses={
+        400: {
+            "description": "总排号格式不合法",
+            "model": ErrorResponse,
+        },
+        404: {
+            "description": "该总排号未找到对应排产号",
+            "model": ErrorResponse,
+        },
+    },
+)
+def paicha_overview(zongpai_no: str, db: Session = Depends(get_db)):
+    return get_paicha_overview(db, zongpai_no)

app/core/config.py

@@ -1,32 +0,0 @@
-from sqlalchemy.engine import URL
-from pydantic_settings import BaseSettings, SettingsConfigDict
-
-
-class Settings(BaseSettings):
-    SQL_SERVER_HOST: str
-    SQL_SERVER_PORT: int = 1433
-    SQL_SERVER_DATABASE: str
-    SQL_SERVER_USERNAME: str
-    SQL_SERVER_PASSWORD: str
-    SQL_SERVER_DRIVER: str = "{ODBC Driver 18 for SQL Server}"
-    SQL_SERVER_TRUST_SERVER_CERTIFICATE: str = "yes"
-
-    @property
-    def database_url(self) -> URL:
-        return URL.create(
-            "mssql+pyodbc",
-            username=self.SQL_SERVER_USERNAME,
-            password=self.SQL_SERVER_PASSWORD,
-            host=self.SQL_SERVER_HOST,
-            port=self.SQL_SERVER_PORT,
-            database=self.SQL_SERVER_DATABASE,
-            query={
-                "driver": self.SQL_SERVER_DRIVER.strip("{}"),
-                "TrustServerCertificate": self.SQL_SERVER_TRUST_SERVER_CERTIFICATE,
-            },
-        )
-
-    model_config = SettingsConfigDict(env_file=".env", extra="ignore")
-
-
-settings = Settings()

app/main.py

@@ -1,11 +1,36 @@
+import sys
+
 from fastapi import FastAPI, Request
 from fastapi.exceptions import RequestValidationError
 from fastapi.responses import JSONResponse
 
+from config.settings import load_settings
+
+# 加载配置文件，失败则退出
+try:
+    settings = load_settings()
+except FileNotFoundError as e:
+    print(f"配置文件错误: {e}")
+    sys.exit(1)
+except Exception as e:
+    print(f"加载配置失败: {e}")
+    sys.exit(1)
+
 from app.api.v1.location import router as location_router
 from app.api.v1.box import router as box_router
-from app.services.location_service import DuplicateLocationError
-from app.services.box_service import ZongpaiNotFoundError, DuplicateBoxItemError, InvalidZongpaiError
+from app.services.location_service import (
+    AlreadyOffShelfError,
+    DuplicateLocationError,
+    PaichaNotFoundError,
+)
+from app.services.box_service import (
+    BoxItemNotFoundError,
+    DuplicateBoxItemError,
+    InvalidBoxItemError,
+    InvalidQuantityError,
+    InvalidZongpaiError,
+    ZongpaiNotFoundError,
+)
 
 app = FastAPI(title="CargoTrace API", version="0.1.0")
 
@@ -26,6 +51,19 @@ async def duplicate_location_handler(request: Request, exc: DuplicateLocationErr
     )
 
 
+@app.exception_handler(AlreadyOffShelfError)
+async def already_off_shelf_handler(request: Request, exc: AlreadyOffShelfError):
+    return JSONResponse(
+        status_code=409,
+        content={
+            "error_code": "ALREADY_OFF_SHELF",
+            "message": "该总排号已下架至转运区域，不可重新上架",
+            "location_code": exc.location_code,
+            "registered_at": exc.registered_at,
+        },
+    )
+
+
 @app.exception_handler(RequestValidationError)
 async def validation_error_handler(request: Request, exc: RequestValidationError):
     for err in exc.errors():
@@ -92,6 +130,50 @@ async def duplicate_box_handler(request: Request, exc: DuplicateBoxItemError):
     )
 
 
+@app.exception_handler(BoxItemNotFoundError)
+async def box_item_not_found_handler(request: Request, exc: BoxItemNotFoundError):
+    return JSONResponse(
+        status_code=404,
+        content={
+            "error_code": "BOX_ITEM_NOT_FOUND",
+            "message": "指定装箱明细不存在",
+        },
+    )
+
+
+@app.exception_handler(PaichaNotFoundError)
+async def paicha_not_found_handler(request: Request, exc: PaichaNotFoundError):
+    return JSONResponse(
+        status_code=404,
+        content={
+            "error_code": "PAICHA_NOT_FOUND",
+            "message": "暂无排产信息",
+        },
+    )
+
+
+@app.exception_handler(InvalidQuantityError)
+async def invalid_quantity_handler(request: Request, exc: InvalidQuantityError):
+    return JSONResponse(
+        status_code=400,
+        content={
+            "error_code": "INVALID_QUANTITY",
+            "message": "装箱数量超出可装数量上限",
+        },
+    )
+
+
+@app.exception_handler(InvalidBoxItemError)
+async def invalid_box_item_handler(request: Request, exc: InvalidBoxItemError):
+    return JSONResponse(
+        status_code=400,
+        content={
+            "error_code": "INVALID_BOX_ITEM",
+            "message": "装箱明细记录不合法或不允许修改",
+        },
+    )
+
+
 @app.get("/")
 async def root():
     return {"message": "Welcome to CargoTrace API"}

app/models/finished_goods.py

@@ -20,7 +20,10 @@ class FinishedGoodsLocation(Base):
     zongpai_no: Mapped[str] = mapped_column(String(64), nullable=False)
     location_code: Mapped[str] = mapped_column(String(64), nullable=False)
     created_at: Mapped[datetime] = mapped_column(
-        DateTime, nullable=False, server_default=func.getdate()
+        DateTime,
+        nullable=False,
+        default=func.current_timestamp(),
+        server_default=func.current_timestamp(),
     )
 
 
@@ -36,7 +39,10 @@ class FinishedGoodsBox(Base):
     paichan_no: Mapped[str] = mapped_column(String(64), nullable=False)
     box_no: Mapped[int] = mapped_column(nullable=False)
     created_at: Mapped[datetime] = mapped_column(
-        DateTime, nullable=False, server_default=func.getdate()
+        DateTime,
+        nullable=False,
+        default=func.current_timestamp(),
+        server_default=func.current_timestamp(),
     )
 
 
@@ -53,5 +59,8 @@ class FinishedGoodsBoxItem(Base):
     zongpai_no: Mapped[str] = mapped_column(String(64), nullable=False)
     quantity: Mapped[float | None] = mapped_column(Numeric(18, 3), nullable=True)
     created_at: Mapped[datetime] = mapped_column(
-        DateTime, nullable=False, server_default=func.getdate()
+        DateTime,
+        nullable=False,
+        default=func.current_timestamp(),
+        server_default=func.current_timestamp(),
     )

app/schemas/box.py

@@ -1,13 +1,23 @@
 import re
 
-from pydantic import BaseModel, field_validator
+from pydantic import BaseModel, Field, field_validator
 
 ZONGPAI_PATTERN = re.compile(r"^(\d{2}(B|C|T)\d+|\d{2}(BW|CW)\d{4})$")
 
 
 class BoxItemDetail(BaseModel):
     """箱号下某个总排号的明细"""
+    box_item_id: int | None = None
     zongpai_no: str
+    work_order_no: str | None = None
+    quantity: int
+    total_quantity: int | None = None
+
+
+class CurrentZongpaiBox(BaseModel):
+    """当前总排号已经分配的箱号明细"""
+    box_item_id: int
+    box_no: int
     quantity: int
 
 
@@ -21,7 +31,9 @@ class BoxInfoResponse(BaseModel):
     """GET /box/info 响应"""
     zongpai_no: str
     paichan_no: str
+    work_order_no: str | None = None
     quantity: int
+    current_zongpai_boxes: list[CurrentZongpaiBox] = Field(default_factory=list)
     existing_boxes: list[BoxDetail]
     max_box_no: int
     suggested_box_no: int
@@ -58,8 +70,45 @@ class BoxSaveRequest(BaseModel):
 
 class BoxSaveResponse(BaseModel):
     """POST /box 响应"""
+    box_item_id: int
     paichan_no: str
     box_no: int
     zongpai_no: str
     quantity: int
     created_at: str
+
+
+class BoxUpdateRequest(BaseModel):
+    """PATCH /box/{box_item_id} 请求"""
+    box_no: int
+    quantity: int
+
+    @field_validator("box_no")
+    @classmethod
+    def validate_box_no(cls, v: int) -> int:
+        if v <= 0:
+            raise ValueError("INVALID_BOX_NO")
+        return v
+
+    @field_validator("quantity")
+    @classmethod
+    def validate_quantity(cls, v: int) -> int:
+        if v <= 0:
+            raise ValueError("INVALID_QUANTITY")
+        return v
+
+
+class BoxUpdateResponse(BaseModel):
+    """PATCH /box/{box_item_id} 响应"""
+    box_item_id: int
+    paichan_no: str
+    box_no: int
+    zongpai_no: str
+    quantity: int
+    updated_at: str
+
+
+class BoxDeleteResponse(BaseModel):
+    """DELETE /box/{box_item_id} 响应"""
+    box_item_id: int
+    deleted: bool

app/schemas/location.py

@@ -32,6 +32,21 @@ class LocationResponse(BaseModel):
     zongpai_no: str
     location_code: str
     created_at: str
+    previous_location: str | None = None
+
+
+class PaichaOverviewItem(BaseModel):
+    zongpai_no: str
+    work_order_no: str | None = None
+    quantity: int
+    location_code: str | None = None
+    status: str
+
+
+class PaichaOverviewResponse(BaseModel):
+    paicha_no: str
+    total_count: int
+    items: list[PaichaOverviewItem]
 
 
 class DuplicateLocationDetail(BaseModel):

app/services/box_service.py

@@ -1,10 +1,10 @@
 import re
 
-from sqlalchemy import text
+from sqlalchemy import bindparam, text
 from sqlalchemy.orm import Session
 
 from app.models.finished_goods import FinishedGoodsBox, FinishedGoodsBoxItem
-from app.schemas.box import BoxSaveRequest
+from app.schemas.box import BoxSaveRequest, BoxUpdateRequest
 
 ZONGPAI_PATTERN = re.compile(r"^(\d{2}(B|C|T)\d+|\d{2}(BW|CW)\d{4})$")
 
@@ -23,13 +23,21 @@ class DuplicateBoxItemError(Exception):
         self.box_no = box_no
 
 
+class BoxItemNotFoundError(Exception):
+    pass
+
+
+class InvalidBoxItemError(Exception):
+    pass
+
+
+class InvalidQuantityError(Exception):
+    pass
+
+
 def query_erp_info(db: Session, zongpai_no: str) -> dict:
-    """从 ERP 视图查询总排号对应的排产号和数量。"""
-    sql = text(
-        "SELECT TOP 1 [总排号], [排产号], [数量] "
-        "FROM [ERPAuto].[vw_productionContractData] "
-        "WHERE [总排号] = :zongpai_no"
-    )
+    """从 ERP 视图查询总排号对应的排产号、工令号和数量。"""
+    sql = text(_erp_info_sql(db))
     row = db.execute(sql, {"zongpai_no": zongpai_no}).fetchone()
     if not row:
         raise ZongpaiNotFoundError()
@@ -37,6 +45,54 @@ def query_erp_info(db: Session, zongpai_no: str) -> dict:
         "zongpai_no": row[0],
         "paichan_no": row[1],
         "quantity": int(row[2]),
+        "work_order_no": row[3],
+    }
+
+
+def _erp_info_sql(db: Session) -> str:
+    dialect_name = db.bind.dialect.name if db.bind is not None else ""
+    if dialect_name == "postgresql":
+        return (
+            'SELECT "总排号", "排产号", "数量", "工令号" '
+            'FROM "ERPAuto"."vw_productionContractData" '
+            'WHERE "总排号" = :zongpai_no '
+            "LIMIT 1"
+        )
+    return (
+        "SELECT TOP 1 [总排号], [排产号], [数量], [工令号] "
+        "FROM [ERPAuto].[vw_productionContractData] "
+        "WHERE [总排号] = :zongpai_no"
+    )
+
+
+def query_erp_item_info_map(db: Session, zongpai_nos: list[str]) -> dict[str, dict]:
+    """批量查询总排号对应的工令号和 ERP 总数量。"""
+    if not zongpai_nos:
+        return {}
+
+    dialect_name = db.bind.dialect.name if db.bind is not None else ""
+    if dialect_name == "postgresql":
+        sql = text(
+            'SELECT "总排号", "工令号", "数量" '
+            'FROM "ERPAuto"."vw_productionContractData" '
+            'WHERE "总排号" IN :zongpai_nos'
+        )
+    else:
+        sql = text(
+            "SELECT [总排号], [工令号], [数量] "
+            "FROM [ERPAuto].[vw_productionContractData] "
+            "WHERE [总排号] IN :zongpai_nos"
+        )
+    rows = db.execute(
+        sql.bindparams(bindparam("zongpai_nos", expanding=True)),
+        {"zongpai_nos": sorted(set(zongpai_nos))},
+    ).fetchall()
+    return {
+        row[0]: {
+            "work_order_no": row[1],
+            "total_quantity": int(row[2]) if row[2] is not None else None,
+        }
+        for row in rows
     }
 
 
@@ -56,18 +112,45 @@ def get_box_info(db: Session, zongpai_no: str) -> dict:
         .all()
     )
 
-    existing_boxes = []
-    max_box_no = 0
+    box_items = {}
+    item_zongpai_nos = []
     for box in boxes:
         items = (
             db.query(FinishedGoodsBoxItem)
             .filter(FinishedGoodsBoxItem.box_id == box.id)
             .all()
         )
+        box_items[box.id] = items
+        item_zongpai_nos.extend(item.zongpai_no for item in items)
+
+    erp_item_info_map = query_erp_item_info_map(db, item_zongpai_nos)
+
+    existing_boxes = []
+    current_zongpai_boxes = []
+    max_box_no = 0
+    for box in boxes:
+        items = box_items[box.id]
+        for item in items:
+            if item.zongpai_no == zongpai_no:
+                current_zongpai_boxes.append({
+                    "box_item_id": item.id,
+                    "box_no": box.box_no,
+                    "quantity": int(item.quantity or 0),
+                })
         existing_boxes.append({
             "box_no": box.box_no,
             "items": [
-                {"zongpai_no": item.zongpai_no, "quantity": int(item.quantity or 0)}
+                {
+                    "box_item_id": item.id,
+                    "zongpai_no": item.zongpai_no,
+                    "work_order_no": erp_item_info_map.get(
+                        item.zongpai_no, {}
+                    ).get("work_order_no"),
+                    "quantity": int(item.quantity or 0),
+                    "total_quantity": erp_item_info_map.get(
+                        item.zongpai_no, {}
+                    ).get("total_quantity"),
+                }
                 for item in items
             ],
         })
@@ -77,15 +160,54 @@ def get_box_info(db: Session, zongpai_no: str) -> dict:
     return {
         "zongpai_no": zongpai_no,
         "paichan_no": paichan_no,
+        "work_order_no": erp["work_order_no"],
         "quantity": quantity,
+        "current_zongpai_boxes": current_zongpai_boxes,
         "existing_boxes": existing_boxes,
         "max_box_no": max_box_no,
         "suggested_box_no": max_box_no + 1,
     }
 
 
+def _packed_quantity_for_zongpai(
+    db: Session,
+    paichan_no: str,
+    zongpai_no: str,
+    exclude_box_item_id: int | None = None,
+) -> int:
+    query = (
+        db.query(FinishedGoodsBoxItem)
+        .join(FinishedGoodsBox, FinishedGoodsBoxItem.box_id == FinishedGoodsBox.id)
+        .filter(
+            FinishedGoodsBox.paichan_no == paichan_no,
+            FinishedGoodsBoxItem.zongpai_no == zongpai_no,
+        )
+    )
+    if exclude_box_item_id is not None:
+        query = query.filter(FinishedGoodsBoxItem.id != exclude_box_item_id)
+    return sum(int(item.quantity or 0) for item in query.all())
+
+
+def _ensure_quantity_within_erp_total(
+    db: Session,
+    paichan_no: str,
+    zongpai_no: str,
+    erp_quantity: int,
+    submitted_quantity: int,
+    exclude_box_item_id: int | None = None,
+) -> None:
+    packed_quantity = _packed_quantity_for_zongpai(
+        db,
+        paichan_no,
+        zongpai_no,
+        exclude_box_item_id=exclude_box_item_id,
+    )
+    if packed_quantity + submitted_quantity > erp_quantity:
+        raise InvalidQuantityError()
+
+
 def save_box_record(db: Session, req: BoxSaveRequest) -> dict:
-    """保存装箱记录。箱已存在时仅追加明细（多码一箱场景）。"""
+    """保存装箱记录。同箱可凑箱，但同箱同总排不可重复。"""
     erp = query_erp_info(db, req.zongpai_no)
     paichan_no = erp["paichan_no"]
 
@@ -109,7 +231,16 @@ def save_box_record(db: Session, req: BoxSaveRequest) -> dict:
         )
         if existing_item:
             raise DuplicateBoxItemError(paichan_no, req.box_no)
-    else:
+
+    _ensure_quantity_within_erp_total(
+        db,
+        paichan_no,
+        req.zongpai_no,
+        erp["quantity"],
+        req.quantity,
+    )
+
+    if box is None:
         box = FinishedGoodsBox(
             paichan_no=paichan_no,
             box_no=req.box_no,
@@ -127,9 +258,128 @@ def save_box_record(db: Session, req: BoxSaveRequest) -> dict:
     db.refresh(item)
 
     return {
+        "box_item_id": item.id,
         "paichan_no": paichan_no,
         "box_no": req.box_no,
         "zongpai_no": req.zongpai_no,
         "quantity": req.quantity,
         "created_at": item.created_at.isoformat(),
     }
+
+
+def update_box_item(db: Session, box_item_id: int, req: BoxUpdateRequest) -> dict:
+    """更新已分配明细的箱号和数量。"""
+    item = (
+        db.query(FinishedGoodsBoxItem)
+        .filter(FinishedGoodsBoxItem.id == box_item_id)
+        .first()
+    )
+    if item is None:
+        raise BoxItemNotFoundError()
+
+    current_box = (
+        db.query(FinishedGoodsBox)
+        .filter(FinishedGoodsBox.id == item.box_id)
+        .first()
+    )
+    if current_box is None:
+        raise InvalidBoxItemError()
+
+    paichan_no = current_box.paichan_no
+    target_box = (
+        db.query(FinishedGoodsBox)
+        .filter(
+            FinishedGoodsBox.paichan_no == paichan_no,
+            FinishedGoodsBox.box_no == req.box_no,
+        )
+        .first()
+    )
+
+    if target_box is None:
+        target_box = FinishedGoodsBox(paichan_no=paichan_no, box_no=req.box_no)
+        db.add(target_box)
+        db.flush()
+    else:
+        duplicate_item = (
+            db.query(FinishedGoodsBoxItem)
+            .filter(
+                FinishedGoodsBoxItem.box_id == target_box.id,
+                FinishedGoodsBoxItem.zongpai_no == item.zongpai_no,
+                FinishedGoodsBoxItem.id != item.id,
+            )
+            .first()
+        )
+        if duplicate_item is not None:
+            raise DuplicateBoxItemError(paichan_no, req.box_no)
+
+    erp = query_erp_info(db, item.zongpai_no)
+    _ensure_quantity_within_erp_total(
+        db,
+        paichan_no,
+        item.zongpai_no,
+        erp["quantity"],
+        req.quantity,
+        exclude_box_item_id=box_item_id,
+    )
+
+    old_box_id = item.box_id
+    item.box_id = target_box.id
+    item.quantity = req.quantity
+
+    if old_box_id != target_box.id:
+        old_box_has_items = (
+            db.query(FinishedGoodsBoxItem.id)
+            .filter(
+                FinishedGoodsBoxItem.box_id == old_box_id,
+                FinishedGoodsBoxItem.id != item.id,
+            )
+            .first()
+        )
+        if old_box_has_items is None:
+            old_box = (
+                db.query(FinishedGoodsBox)
+                .filter(FinishedGoodsBox.id == old_box_id)
+                .first()
+            )
+            if old_box is not None:
+                db.delete(old_box)
+
+    db.commit()
+    db.refresh(item)
+
+    return {
+        "box_item_id": item.id,
+        "paichan_no": paichan_no,
+        "box_no": req.box_no,
+        "zongpai_no": item.zongpai_no,
+        "quantity": int(item.quantity or 0),
+        "updated_at": item.created_at.isoformat(),
+    }
+
+
+def delete_box_item(db: Session, box_item_id: int) -> dict:
+    """删除误录的装箱明细；若箱号下无其他明细，同步删除空箱号。"""
+    item = (
+        db.query(FinishedGoodsBoxItem)
+        .filter(FinishedGoodsBoxItem.id == box_item_id)
+        .first()
+    )
+    if item is None:
+        raise BoxItemNotFoundError()
+
+    box_id = item.box_id
+    db.delete(item)
+    db.flush()
+
+    remaining = (
+        db.query(FinishedGoodsBoxItem.id)
+        .filter(FinishedGoodsBoxItem.box_id == box_id)
+        .first()
+    )
+    if remaining is None:
+        box = db.query(FinishedGoodsBox).filter(FinishedGoodsBox.id == box_id).first()
+        if box is not None:
+            db.delete(box)
+
+    db.commit()
+    return {"box_item_id": box_item_id, "deleted": True}

app/services/location_service.py

@@ -1,7 +1,14 @@
+import re
+from datetime import datetime
+
+from sqlalchemy import text
 from sqlalchemy.orm import Session
 
 from app.models.finished_goods import FinishedGoodsLocation
 from app.schemas.location import LocationRequest
+from app.services.box_service import InvalidZongpaiError
+
+ZONGPAI_PATTERN = re.compile(r"^(\d{2}(B|C|T)\d+|\d{2}(BW|CW)\d{4})$")
 
 
 class DuplicateLocationError(Exception):
@@ -12,6 +19,135 @@ class DuplicateLocationError(Exception):
         self.registered_at = registered_at
 
 
+class AlreadyOffShelfError(Exception):
+    """总排号已下架至转运区域。"""
+
+    def __init__(self, location_code: str, registered_at: str):
+        self.location_code = location_code
+        self.registered_at = registered_at
+
+
+class PaichaNotFoundError(Exception):
+    pass
+
+
+def _is_transit_location(location_code: str) -> bool:
+    return location_code.startswith("TRANS-")
+
+
+def _is_temp_storage_location(location_code: str) -> bool:
+    return location_code.startswith("B")
+
+
+def _erp_info_sql(db: Session) -> str:
+    dialect_name = db.bind.dialect.name if db.bind is not None else ""
+    if dialect_name == "postgresql":
+        return (
+            'SELECT "总排号", "排产号", "数量", "工令号" '
+            'FROM "ERPAuto"."vw_productionContractData" '
+            'WHERE "总排号" = :zongpai_no '
+            "LIMIT 1"
+        )
+    return (
+        "SELECT TOP 1 [总排号], [排产号], [数量], [工令号] "
+        "FROM [ERPAuto].[vw_productionContractData] "
+        "WHERE [总排号] = :zongpai_no"
+    )
+
+
+def _erp_paicha_items_sql(db: Session) -> str:
+    dialect_name = db.bind.dialect.name if db.bind is not None else ""
+    if dialect_name == "postgresql":
+        return (
+            'SELECT "总排号", "工令号", "数量" '
+            'FROM "ERPAuto"."vw_productionContractData" '
+            'WHERE "排产号" = :paicha_no'
+        )
+    return (
+        "SELECT [总排号], [工令号], [数量] "
+        "FROM [ERPAuto].[vw_productionContractData] "
+        "WHERE [排产号] = :paicha_no"
+    )
+
+
+def _query_paicha_no(db: Session, zongpai_no: str) -> str:
+    row = db.execute(text(_erp_info_sql(db)), {"zongpai_no": zongpai_no}).fetchone()
+    if not row:
+        raise PaichaNotFoundError()
+    return row[1]
+
+
+def _query_paicha_items(db: Session, paicha_no: str) -> list[dict]:
+    rows = db.execute(
+        text(_erp_paicha_items_sql(db)), {"paicha_no": paicha_no}
+    ).fetchall()
+    return [
+        {
+            "zongpai_no": row[0],
+            "work_order_no": row[1],
+            "quantity": int(row[2]) if row[2] is not None else 0,
+        }
+        for row in rows
+    ]
+
+
+def _location_status(location_code: str | None) -> str:
+    if location_code is None:
+        return "not_shelved"
+    if _is_transit_location(location_code):
+        return "transferred"
+    if _is_temp_storage_location(location_code):
+        return "temp_stored"
+    return "on_shelf"
+
+
+def get_paicha_overview(db: Session, zongpai_no: str) -> dict:
+    zongpai_no = zongpai_no.strip().upper()
+    if not ZONGPAI_PATTERN.match(zongpai_no):
+        raise InvalidZongpaiError()
+
+    paicha_no = _query_paicha_no(db, zongpai_no)
+    erp_items = _query_paicha_items(db, paicha_no)
+    if not erp_items:
+        raise PaichaNotFoundError()
+
+    zongpai_nos = [item["zongpai_no"] for item in erp_items]
+    locations = (
+        db.query(FinishedGoodsLocation)
+        .filter(FinishedGoodsLocation.zongpai_no.in_(zongpai_nos))
+        .all()
+    )
+    location_map = {item.zongpai_no: item.location_code for item in locations}
+
+    status_order = {"on_shelf": 0, "temp_stored": 1, "transferred": 2, "not_shelved": 3}
+    overview_items = []
+    for item in erp_items:
+        location_code = location_map.get(item["zongpai_no"])
+        status = _location_status(location_code)
+        overview_items.append(
+            {
+                "zongpai_no": item["zongpai_no"],
+                "work_order_no": item["work_order_no"],
+                "quantity": item["quantity"],
+                "location_code": location_code,
+                "status": status,
+            }
+        )
+
+    overview_items.sort(
+        key=lambda item: (
+            status_order.get(item["status"], 99),
+            item["zongpai_no"],
+        )
+    )
+
+    return {
+        "paicha_no": paicha_no,
+        "total_count": len(overview_items),
+        "items": overview_items,
+    }
+
+
 def register_location(db: Session, req: LocationRequest) -> FinishedGoodsLocation:
     existing = (
         db.query(FinishedGoodsLocation)
@@ -19,6 +155,27 @@ def register_location(db: Session, req: LocationRequest) -> FinishedGoodsLocatio
         .first()
     )
     if existing:
+        # Terminal state: transit location → any operation raises error
+        if _is_transit_location(existing.location_code):
+            raise AlreadyOffShelfError(
+                location_code=existing.location_code,
+                registered_at=existing.created_at.isoformat(),
+            )
+
+        target_is_transit = _is_transit_location(req.location_code)
+        target_is_temp = _is_temp_storage_location(req.location_code)
+        current_is_temp = _is_temp_storage_location(existing.location_code)
+
+        # Allowed: target is transit (off-shelf) or normal→temp (shelf change)
+        if target_is_transit or (not current_is_temp and target_is_temp):
+            previous_location = existing.location_code
+            existing.location_code = req.location_code
+            existing.created_at = datetime.now()
+            db.commit()
+            db.refresh(existing)
+            existing.previous_location = previous_location
+            return existing
+
         raise DuplicateLocationError(
             location_code=existing.location_code,
             registered_at=existing.created_at.isoformat(),

config/settings.py

@@ -1,7 +1,7 @@
 from pathlib import Path
-from typing import Optional
+from typing import Literal
 from sqlalchemy.engine import URL
-from pydantic import BaseModel, Field
+from pydantic import BaseModel
 from pydantic_yaml import parse_yaml_raw_as
 
 
@@ -16,9 +16,20 @@ class SqlServerConfig(BaseModel):
     trust_server_certificate: str = "yes"
 
 
+class PostgreSqlConfig(BaseModel):
+    """PostgreSQL 连接配置"""
+    host: str
+    port: int = 5432
+    database: str
+    username: str
+    password: str
+
+
 class DatabaseConfig(BaseModel):
     """数据库配置"""
+    active: Literal["sql_server", "postgresql"] = "sql_server"
     sql_server: SqlServerConfig
+    postgresql: PostgreSqlConfig | None = None
 
 
 class Settings(BaseModel):
@@ -28,6 +39,11 @@ class Settings(BaseModel):
     @property
     def database_url(self) -> URL:
         """构建数据库连接 URL"""
+        if self.database.active == "postgresql":
+            return self._postgresql_url()
+        return self._sql_server_url()
+
+    def _sql_server_url(self) -> URL:
         conf = self.database.sql_server
         return URL.create(
             "mssql+pyodbc",
@@ -42,6 +58,19 @@ class Settings(BaseModel):
             },
         )
 
+    def _postgresql_url(self) -> URL:
+        conf = self.database.postgresql
+        if conf is None:
+            raise ValueError("已选择 postgresql，但未配置 database.postgresql")
+        return URL.create(
+            "postgresql+psycopg",
+            username=conf.username,
+            password=conf.password,
+            host=conf.host,
+            port=conf.port,
+            database=conf.database,
+        )
+
 
 def load_settings(config_path: str = "config/settings.yaml") -> Settings:
     """加载 YAML 配置文件"""

config/settings.yaml

@@ -1,10 +0,0 @@
-# 数据库配置
-database:
-  sql_server:
-    host: 192.168.110.114
-    port: 1433
-    database: CompanyDB
-    username: peng
-    password: Cqbld123456.
-    driver: "{ODBC Driver 18 for SQL Server}"
-    trust_server_certificate: yes

config/settings.yaml.example

@@ -0,0 +1,17 @@
+# 数据库配置
+database:
+  active: sql_server  # 可选: sql_server, postgresql
+  sql_server:
+    host: YOUR_DB_HOST
+    port: 1433
+    database: YOUR_DB_NAME
+    username: YOUR_USERNAME
+    password: YOUR_PASSWORD
+    driver: "{ODBC Driver 18 for SQL Server}"
+    trust_server_certificate: yes
+  postgresql:
+    host: YOUR_POSTGRES_HOST
+    port: 5432
+    database: YOUR_POSTGRES_DB_NAME
+    username: YOUR_POSTGRES_USERNAME
+    password: YOUR_POSTGRES_PASSWORD

requirements.txt

@@ -2,6 +2,7 @@ fastapi>=0.115.0
 uvicorn[standard]>=0.34.0
 sqlalchemy>=2.0.0
 pyodbc>=5.2.0
+psycopg[binary]>=3.2.0
 pydantic-settings>=2.0.0
 python-dotenv>=1.0.0
 pytest>=8.0.0

tests/conftest.py

@@ -4,7 +4,11 @@ from sqlalchemy.orm import Session
 
 from app.core.database import SessionLocal
 from app.main import app
-from app.models.finished_goods import FinishedGoodsLocation
+from app.models.finished_goods import (
+    FinishedGoodsBox,
+    FinishedGoodsBoxItem,
+    FinishedGoodsLocation,
+)
 
 
 @pytest.fixture
@@ -22,8 +26,32 @@ def db():
 @pytest.fixture(autouse=True)
 def cleanup_test_data(db: Session):
     yield
-    test_zongpai_nos = ["26B999", "26C999", "26BW0999", "26T999"]
+    test_zongpai_nos = [
+        "26B999",
+        "26C999",
+        "26BW0999",
+        "26T999",
+        "26T998",
+        "26B998",
+        "26C998",
+    ]
     db.query(FinishedGoodsLocation).filter(
         FinishedGoodsLocation.zongpai_no.in_(test_zongpai_nos)
     ).delete(synchronize_session=False)
+    test_boxes = (
+        db.query(FinishedGoodsBox)
+        .filter(
+            FinishedGoodsBox.paichan_no == "W00009",
+            FinishedGoodsBox.box_no >= 900,
+        )
+        .all()
+    )
+    test_box_ids = [box.id for box in test_boxes]
+    if test_box_ids:
+        db.query(FinishedGoodsBoxItem).filter(
+            FinishedGoodsBoxItem.box_id.in_(test_box_ids)
+        ).delete(synchronize_session=False)
+        db.query(FinishedGoodsBox).filter(
+            FinishedGoodsBox.id.in_(test_box_ids)
+        ).delete(synchronize_session=False)
     db.commit()

tests/fixtures/test_config.yaml

@@ -1,5 +1,6 @@
 # 测试配置
 database:
+  active: sql_server
   sql_server:
     host: localhost
     port: 1433
@@ -8,3 +9,9 @@ database:
     password: test_pass
     driver: "{ODBC Driver 18 for SQL Server}"
     trust_server_certificate: yes
+  postgresql:
+    host: localhost
+    port: 5432
+    database: TestDB
+    username: test_user
+    password: test_pass

tests/test_box_api.py

@@ -13,8 +13,14 @@ def test_box_info_success(client: TestClient):
     data = resp.json()
     assert data["zongpai_no"] == "26BW0011"
     assert data["paichan_no"] == "W00009"
+    assert "work_order_no" in data
+    assert data["work_order_no"] is None or isinstance(data["work_order_no"], str)
     assert data["quantity"] == 80
+    assert "current_zongpai_boxes" in data
     assert "existing_boxes" in data
+    for box in data["existing_boxes"]:
+        for item in box["items"]:
+            assert "box_item_id" in item
     assert "max_box_no" in data
     assert data["suggested_box_no"] == data["max_box_no"] + 1
 
@@ -76,3 +82,182 @@ def test_box_save_zongpai_not_found(client: TestClient):
     )
     assert resp.status_code == 404
     assert resp.json()["error_code"] == "ZONGPAI_NOT_FOUND"
+
+
+def test_box_save_multi_code_appends_different_zongpais(client: TestClient):
+    """多码凑箱：同一排产号同一箱号可追加不同总排号。"""
+    box_no = 901
+    first = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0011",
+            "box_no": box_no,
+            "quantity": 10,
+        },
+    )
+    assert first.status_code == 200
+    assert first.json()["box_item_id"] is not None
+
+    second = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0012",
+            "box_no": box_no,
+            "quantity": 8,
+        },
+    )
+    assert second.status_code == 200
+    assert second.json()["box_no"] == box_no
+    assert second.json()["zongpai_no"] == "26BW0012"
+
+    info = client.get("/CargoTrace/box/info", params={"zongpai_no": "26BW0011"})
+    assert info.status_code == 200
+    target_box = next(
+        box for box in info.json()["existing_boxes"] if box["box_no"] == box_no
+    )
+    assert {item["zongpai_no"] for item in target_box["items"]} == {
+        "26BW0011",
+        "26BW0012",
+    }
+    for item in target_box["items"]:
+        assert "work_order_no" in item
+        assert isinstance(item["total_quantity"], int)
+
+
+def test_box_save_multi_code_duplicate_same_zongpai(client: TestClient):
+    """多码凑箱：同箱同总排重复录入返回 DUPLICATE_BOX_NO。"""
+    box_no = 902
+    first = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0011",
+            "box_no": box_no,
+            "quantity": 10,
+        },
+    )
+    assert first.status_code == 200
+
+    duplicate = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0011",
+            "box_no": box_no,
+            "quantity": 5,
+        },
+    )
+    assert duplicate.status_code == 409
+    assert duplicate.json()["error_code"] == "DUPLICATE_BOX_NO"
+
+
+def test_box_save_split_same_zongpai_up_to_total_quantity(client: TestClient):
+    """单码装箱：同一总排号可分箱提交，累计等于 ERP 数量时成功。"""
+    first = client.post(
+        "/CargoTrace/box",
+        json={"zongpai_no": "26BW0011", "box_no": 905, "quantity": 30},
+    )
+    assert first.status_code == 200
+
+    second = client.post(
+        "/CargoTrace/box",
+        json={"zongpai_no": "26BW0011", "box_no": 906, "quantity": 50},
+    )
+    assert second.status_code == 200
+
+    info = client.get("/CargoTrace/box/info", params={"zongpai_no": "26BW0011"})
+    assert info.status_code == 200
+    current_boxes = [
+        item
+        for item in info.json()["current_zongpai_boxes"]
+        if item["box_no"] in (905, 906)
+    ]
+    assert sum(item["quantity"] for item in current_boxes) == 80
+
+
+def test_box_save_rejects_quantity_over_remaining(client: TestClient):
+    """保存后累计数量超过 ERP 总数量时返回 INVALID_QUANTITY。"""
+    created = client.post(
+        "/CargoTrace/box",
+        json={"zongpai_no": "26BW0011", "box_no": 907, "quantity": 70},
+    )
+    assert created.status_code == 200
+
+    over = client.post(
+        "/CargoTrace/box",
+        json={"zongpai_no": "26BW0011", "box_no": 908, "quantity": 11},
+    )
+    assert over.status_code == 400
+    assert over.json()["error_code"] == "INVALID_QUANTITY"
+
+
+def test_box_update_same_box_no_does_not_conflict(client: TestClient):
+    """PATCH 原箱号未变时，应排除当前 box_item_id，避免误判重复。"""
+    box_no = 903
+    created = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0011",
+            "box_no": box_no,
+            "quantity": 10,
+        },
+    )
+    assert created.status_code == 200
+    box_item_id = created.json()["box_item_id"]
+
+    updated = client.patch(
+        f"/CargoTrace/box/{box_item_id}",
+        json={"box_no": box_no, "quantity": 7},
+    )
+    assert updated.status_code == 200
+    assert updated.json()["quantity"] == 7
+
+
+def test_box_update_rejects_quantity_over_remaining(client: TestClient):
+    """PATCH 调整数量导致累计超过 ERP 总数量时返回 INVALID_QUANTITY。"""
+    first = client.post(
+        "/CargoTrace/box",
+        json={"zongpai_no": "26BW0011", "box_no": 909, "quantity": 70},
+    )
+    assert first.status_code == 200
+
+    second = client.post(
+        "/CargoTrace/box",
+        json={"zongpai_no": "26BW0011", "box_no": 910, "quantity": 5},
+    )
+    assert second.status_code == 200
+    box_item_id = second.json()["box_item_id"]
+
+    over = client.patch(
+        f"/CargoTrace/box/{box_item_id}",
+        json={"box_no": 910, "quantity": 11},
+    )
+    assert over.status_code == 400
+    assert over.json()["error_code"] == "INVALID_QUANTITY"
+
+
+def test_box_delete_removes_empty_box(client: TestClient):
+    """DELETE 删除最后一条明细后，同步清理空箱号。"""
+    box_no = 904
+    created = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0011",
+            "box_no": box_no,
+            "quantity": 10,
+        },
+    )
+    assert created.status_code == 200
+    box_item_id = created.json()["box_item_id"]
+
+    deleted = client.delete(f"/CargoTrace/box/{box_item_id}")
+    assert deleted.status_code == 200
+    assert deleted.json() == {"box_item_id": box_item_id, "deleted": True}
+
+    recreated = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0012",
+            "box_no": box_no,
+            "quantity": 8,
+        },
+    )
+    assert recreated.status_code == 200

tests/test_config.py

@@ -5,6 +5,7 @@ from config.settings import load_settings
 def test_load_settings_success():
     """测试成功加载配置文件"""
     settings = load_settings("tests/fixtures/test_config.yaml")
+    assert settings.database.active == "sql_server"
     assert settings.database.sql_server.port == 1433
     assert settings.database.sql_server.host == "localhost"
     assert settings.database.sql_server.database == "TestDB"
@@ -23,3 +24,14 @@ def test_database_url_property():
     assert "mssql+pyodbc" in str(url)
     assert "test_user" in str(url)
     assert "TestDB" in str(url)
+
+
+def test_postgresql_database_url_property():
+    """测试 PostgreSQL database_url 属性生成"""
+    settings = load_settings("tests/fixtures/test_config.yaml")
+    settings.database.active = "postgresql"
+    url = settings.database_url
+    assert url.drivername == "postgresql+psycopg"
+    assert url.host == "localhost"
+    assert url.port == 5432
+    assert url.database == "TestDB"

tests/test_location_api.py

@@ -1,5 +1,8 @@
 from fastapi.testclient import TestClient
 
+from app.core.database import SessionLocal
+from app.models.finished_goods import FinishedGoodsLocation
+
 
 def test_register_location_success(client: TestClient):
     """正常上架 — 应返回 200"""
@@ -13,8 +16,8 @@ def test_register_location_success(client: TestClient):
     assert data["location_code"] == "A01-02-03"
 
 
-def test_register_location_duplicate(client: TestClient):
-    """重复上架 — 应返回 409，包含统一错误格式"""
+def test_register_location_duplicate_normal_to_normal(client: TestClient):
+    """普通货位重复上架到普通货位 — 应返回 DUPLICATE_LOCATION"""
     client.post(
         "/CargoTrace/location",
         json={"zongpai_no": "26C999", "location_code": "A01-02-03"},
@@ -30,6 +33,69 @@ def test_register_location_duplicate(client: TestClient):
     assert "registered_at" in data
 
 
+def test_register_location_normal_to_transit_updates_record(client: TestClient):
+    """普通货位下架到转运货位 — 应更新记录并返回 previous_location"""
+    client.post(
+        "/CargoTrace/location",
+        json={"zongpai_no": "26T998", "location_code": "A01-02-03"},
+    )
+    resp = client.post(
+        "/CargoTrace/location",
+        json={"zongpai_no": "26T998", "location_code": "TRANS-01"},
+    )
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["zongpai_no"] == "26T998"
+    assert data["location_code"] == "TRANS-01"
+    assert data["previous_location"] == "A01-02-03"
+
+    db = SessionLocal()
+    try:
+        record = (
+            db.query(FinishedGoodsLocation)
+            .filter(FinishedGoodsLocation.zongpai_no == "26T998")
+            .first()
+        )
+        assert record is not None
+        assert record.location_code == "TRANS-01"
+    finally:
+        db.close()
+
+
+def test_register_location_transit_to_normal_rejected(client: TestClient):
+    """已下架后再上架到普通货位 — 应返回 ALREADY_OFF_SHELF"""
+    client.post(
+        "/CargoTrace/location",
+        json={"zongpai_no": "26B998", "location_code": "TRANS-01"},
+    )
+    resp = client.post(
+        "/CargoTrace/location",
+        json={"zongpai_no": "26B998", "location_code": "A01-02-03"},
+    )
+    assert resp.status_code == 409
+    data = resp.json()
+    assert data["error_code"] == "ALREADY_OFF_SHELF"
+    assert data["message"] == "该总排号已下架至转运区域，不可重新上架"
+    assert data["location_code"] == "TRANS-01"
+    assert "registered_at" in data
+
+
+def test_register_location_transit_to_transit_rejected(client: TestClient):
+    """已下架后再提交转运货位 — 应返回 ALREADY_OFF_SHELF"""
+    client.post(
+        "/CargoTrace/location",
+        json={"zongpai_no": "26C998", "location_code": "TRANS-01"},
+    )
+    resp = client.post(
+        "/CargoTrace/location",
+        json={"zongpai_no": "26C998", "location_code": "TRANS-02"},
+    )
+    assert resp.status_code == 409
+    data = resp.json()
+    assert data["error_code"] == "ALREADY_OFF_SHELF"
+    assert data["location_code"] == "TRANS-01"
+
+
 def test_register_location_invalid_zongpai(client: TestClient):
     """无效总排号 — 应返回 400"""
     resp = client.post(

tests/test_location_overview.py

@@ -0,0 +1,106 @@
+import pytest
+from fastapi.testclient import TestClient
+
+from app.api.v1 import location as location_api
+from app.services.box_service import InvalidZongpaiError
+from app.services.location_service import PaichaNotFoundError, get_paicha_overview
+
+
+class _Bind:
+    class Dialect:
+        name = "postgresql"
+
+    dialect = Dialect()
+
+
+class _Rows:
+    def __init__(self, rows):
+        self._rows = rows
+
+    def fetchone(self):
+        return self._rows[0] if self._rows else None
+
+    def fetchall(self):
+        return self._rows
+
+
+class _Location:
+    def __init__(self, zongpai_no, location_code):
+        self.zongpai_no = zongpai_no
+        self.location_code = location_code
+
+
+class _Query:
+    def __init__(self, rows):
+        self._rows = rows
+
+    def filter(self, *_args, **_kwargs):
+        return self
+
+    def all(self):
+        return self._rows
+
+
+class _Session:
+    bind = _Bind()
+
+    def execute(self, _sql, params):
+        if "zongpai_no" in params:
+            if params["zongpai_no"] == "26B404":
+                return _Rows([])
+            return _Rows([("26B1", "R00001", 80, "6-1(7)")])
+        return _Rows([
+            ("26B2", "6-1(7)", 34),
+            ("26B3", "6-2(3)", 60),
+            ("26B1", "6-1(7)", 80),
+            ("26B4", "6-2(3)", 45),
+        ])
+
+    def query(self, _model):
+        return _Query([
+            _Location("26B1", "A01-02-03"),
+            _Location("26B3", "TRANS-01"),
+        ])
+
+
+def test_paicha_overview_maps_statuses_and_sorts():
+    data = get_paicha_overview(_Session(), "26B1")
+
+    assert data["paicha_no"] == "R00001"
+    assert data["total_count"] == 4
+    assert [item["zongpai_no"] for item in data["items"]] == [
+        "26B1",
+        "26B3",
+        "26B2",
+        "26B4",
+    ]
+    assert data["items"][0]["status"] == "on_shelf"
+    assert data["items"][0]["location_code"] == "A01-02-03"
+    assert data["items"][1]["status"] == "transferred"
+    assert data["items"][1]["location_code"] == "TRANS-01"
+    assert data["items"][2]["status"] == "not_shelved"
+    assert data["items"][2]["location_code"] is None
+
+
+def test_paicha_overview_invalid_zongpai():
+    with pytest.raises(InvalidZongpaiError):
+        get_paicha_overview(_Session(), "INVALID")
+
+
+def test_paicha_overview_not_found():
+    with pytest.raises(PaichaNotFoundError):
+        get_paicha_overview(_Session(), "26B404")
+
+
+def test_paicha_overview_api_not_found(client: TestClient, monkeypatch):
+    def raise_not_found(_db, _zongpai_no):
+        raise PaichaNotFoundError()
+
+    monkeypatch.setattr(location_api, "get_paicha_overview", raise_not_found)
+    resp = client.get(
+        "/CargoTrace/location/paicha-overview",
+        params={"zongpai_no": "26B404"},
+    )
+
+    assert resp.status_code == 404
+    assert resp.json()["error_code"] == "PAICHA_NOT_FOUND"