激光材料数据平台 1.3.0

公开数据看板、四位 Key 录入面板、管理后台与三级权限、动态字段配置、
PostgreSQL/SQLite 双支持、数据库备份，以及本版新增的成品图上传与预览。

图片相关：
- 录入表单支持相册选图与手机端直接拍照，每条记录最多 6 张
- 浏览器内压缩到最长边 1600 并剥离 EXIF，入库统一为 JPG/PNG
- 二进制直接入库，现有备份自动覆盖图片，部署无需新增卷
- 详情页缩略图宫格与全屏 lightbox，公开看板同样可见

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/test_dynamic_fields.py

@@ -0,0 +1,43 @@
+import json
+
+import pytest
+from fastapi import HTTPException
+
+from app.dynamic_fields import render_custom_value, validate_raw_value
+from app.models import CustomFieldDefinition, CustomFieldValue
+
+
+def definition(input_type="text", required=False, options=None):
+    return CustomFieldDefinition(
+        field_key="custom_test", label="测试字段", input_type=input_type,
+        is_required=required, is_active=True, is_public=True,
+        options_json=json.dumps(options or []), sort_order=0, created_by=1,
+    )
+
+
+def test_required_dynamic_field_rejects_empty_value():
+    with pytest.raises(HTTPException) as error:
+        validate_raw_value(definition(required=True), None)
+    assert error.value.status_code == 422
+
+
+def test_select_rejects_value_outside_current_options():
+    with pytest.raises(HTTPException):
+        validate_raw_value(definition("select", options=["A", "B"]), "历史选项")
+
+
+def test_type_change_preserves_incompatible_raw_value_for_display():
+    item = CustomFieldValue(raw_value="High")
+    item.definition = definition("number")
+    rendered = render_custom_value(item)
+    assert rendered["raw_value"] == "High"
+    assert rendered["display_value"] == "High"
+    assert rendered["compatible"] is False
+
+
+def test_compatible_number_is_processed_for_display():
+    item = CustomFieldValue(raw_value="12.5")
+    item.definition = definition("number")
+    rendered = render_custom_value(item)
+    assert rendered["value"] == 12.5
+    assert rendered["compatible"] is True