修feat: 渠道库存同步支持字段任意排序并增加字段异常告警

- 按字段名校验并写入渠道库存，取消字段顺序校验及表头重建
- 严格校验必填字段名称、类型和数字格式，失败时不修改表头或记录
- 字段校验失败时发送飞书群通知
- 添加字段校验与通知流程测试
- 忽略 Python 字节码、__pycache__ 和 .DS_Store

inventory_sync/service.py

@@ -7,7 +7,7 @@ from typing import Any
 
 from inventory_analytics.logging_utils import log_event as emit_log_event
 
-from .feishu import FeishuApiError, FeishuClient
+from .feishu import FeishuApiError, FeishuClient, FeishuFieldValidationError
 from .postgres import query_postgres
 from .settings import AppConfig
 from .specs import BRAND_SYNC_TARGETS, FIELD_SPECS, PRIMARY_FIELD_NAME, PRIMARY_FIELD_SOURCE, BrandSyncTarget, FieldSpec
@@ -15,6 +15,8 @@ from .specs import BRAND_SYNC_TARGETS, FIELD_SPECS, PRIMARY_FIELD_NAME, PRIMARY_
 
 logger = logging.getLogger("inventory_sync.service")
 
+CHANNEL_INVENTORY_SCHEMA_ALERT_CHAT_ID = "oc_8a4b6891bade81d116914aa55054a49d"
+
 LOG_FIELD_LABELS = {
     "advanced_permission_enabled": "高级权限已开启",
     "brand_name": "品牌",
@@ -159,7 +161,28 @@ def sync_brand_target(
     source_rows = postgres_rows or []
     target_rows, shop_names = pivot_shop_stock_rows(source_rows)
     field_specs = build_channel_inventory_field_specs(shop_names)
-    available_fields = client.ensure_target_fields(access_token, app_token, table_id, field_specs)
+    try:
+        available_fields = client.ensure_target_fields(access_token, app_token, table_id, field_specs)
+    except FeishuFieldValidationError as exc:
+        notification = (
+            "【渠道库存同步未执行】\n"
+            f"品牌：{target.brand_name}\n"
+            f"数据表：{target.table_name}\n"
+            "原因：飞书表头字段校验失败。本次不会删除或重建字段，也不会删除或写入记录。\n"
+            f"详情：{exc}"
+        )
+        try:
+            client.send_text_message(access_token, CHANNEL_INVENTORY_SCHEMA_ALERT_CHAT_ID, notification)
+        except Exception as notification_exc:  # noqa: BLE001
+            log_event(
+                logging.ERROR,
+                "渠道库存字段校验失败通知发送失败",
+                stage="schema_validation",
+                brand_name=target.brand_name,
+                table_name=target.table_name,
+                error=str(notification_exc),
+            )
+        raise
     existing_records = client.list_records(access_token, app_token, table_id)
     existing_record_ids = [record.get("record_id") for record in existing_records if record.get("record_id")]
     log_event(