feat: 全量功能模块开发与集成测试修复

- 新增后端模块：Alert、APIAsset、Compliance、Lineage、Masking、Risk、SchemaChange、Unstructured、Watermark
- 新增前端模块页面与API接口
- 新增Alembic迁移脚本(002-014)覆盖全量业务表
- 新增测试数据生成脚本与集成测试脚本
- 修复metadata模型JSON类型导入缺失导致启动失败的问题
- 修复前端Alert/APIAsset页面request模块路径错误
- 更新docker-compose与开发计划文档

backend/alembic/versions/010_add_risk_assessment.py

@@ -0,0 +1,40 @@
+"""Add risk_assessment table
+
+Revision ID: 010
+Revises: 009
+Create Date: 2026-04-23 21:00:00.000000
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision: str = "010"
+down_revision: Union[str, None] = "009"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "risk_assessment",
+        sa.Column("id", sa.Integer(), primary_key=True, index=True),
+        sa.Column("entity_type", sa.String(20), nullable=False),
+        sa.Column("entity_id", sa.Integer(), nullable=False),
+        sa.Column("entity_name", sa.String(200), nullable=True),
+        sa.Column("risk_score", sa.Float(), default=0.0),
+        sa.Column("sensitivity_score", sa.Float(), default=0.0),
+        sa.Column("exposure_score", sa.Float(), default=0.0),
+        sa.Column("protection_score", sa.Float(), default=0.0),
+        sa.Column("details", sa.JSON(), nullable=True),
+        sa.Column("created_at", sa.DateTime(), default=sa.func.now()),
+        sa.Column("updated_at", sa.DateTime(), default=sa.func.now(), onupdate=sa.func.now()),
+    )
+    op.create_index("idx_risk_entity", "risk_assessment", ["entity_type", "entity_id"])
+
+
+def downgrade() -> None:
+    op.drop_index("idx_risk_entity", table_name="risk_assessment")
+    op.drop_table("risk_assessment")