fix: restore models.py to 1346fbb baseline

Recovers 7 model classes (UserStorageQuota, AutomatedTask, ExternalKBService,
KnowledgeDocumentChunk, MCPServer, OSSStorageConfig, TaskExecutionLog) and the
gen_uuid helper that were lost in the mass file-deletion (5d7f32d). These are
required by the restored admin modules (storage_admin/asset_admin/etc). Verified
at runtime: /health=200 and all restored admin routers serve 200.

backend/python/app/models.py

@@ -65,6 +65,9 @@ class ApiKey(Base):
     last_used_at = Column(DateTime, default=None)
     created_at = Column(DateTime, default=datetime.now)
     expired_at = Column(DateTime, default=None)
+    description = Column(String(500), default=None, comment="密钥描述")
+    rate_limit = Column(Integer, default=60, comment="速率限制(请求/分钟)")
+    total_calls = Column(BigInteger, default=0, comment="总调用次数")
 
 
 # ============================================================
@@ -81,6 +84,8 @@ class Conversation(Base):
     status = Column(String(10), nullable=False, default="active")  # active / archived
     pinned = Column(Boolean, default=False)
     knowledge_graph_count = Column(Integer, default=0)
+    knowledge_graph_base_id = Column(String(64), default=None, comment="已生成的知识图谱知识库ID")
+    source = Column(String(32), default=None, comment="对话来源，如 wechat_bot")
     created_at = Column(DateTime, default=datetime.now)
     updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)
 
@@ -165,6 +170,12 @@ class KnowledgeBase(Base):
     knowledge_graph_count = Column(Integer, default=0)
     created_at = Column(DateTime, default=datetime.now)
     updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)
+    is_official = Column(Boolean, default=False)
+    status = Column(String(20), default="active")
+    external_service_id = Column(String(36), default=None)
+    external_id = Column(String(100), default=None)
+    external_sync_status = Column(String(20), default="none")
+    external_config = Column(JSON, default=None)
 
 
 class KnowledgeDirectory(Base):
@@ -196,6 +207,28 @@ class KnowledgeDocument(Base):
     updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)
 
 
+
+
+class KnowledgeDocumentChunk(Base):
+    """知识库文档分段表 — Stage C.1"""
+    __tablename__ = "knowledge_document_chunks"
+
+    id = Column(String(36), primary_key=True, default=gen_uuid)
+    document_id = Column(String(36), ForeignKey("knowledge_documents.id"), nullable=False)
+    knowledge_base_id = Column(String(36), ForeignKey("knowledge_bases.id"), nullable=False)
+    chunk_index = Column(Integer, nullable=False, default=0, comment="分段序号")
+    content = Column(Text, nullable=False, comment="分段文本内容")
+    start_char = Column(Integer, default=0, comment="起始字符位置")
+    end_char = Column(Integer, default=0, comment="结束字符位置")
+    chunk_metadata = Column(JSON, default=None, comment="分段元数据(标题、关键词等)")
+    token_count = Column(Integer, default=0, comment="分段token数估算")
+    created_at = Column(DateTime, default=datetime.now)
+
+    __table_args__ = (
+        Index("idx_kdc_doc_id", "document_id"),
+        Index("idx_kdc_kb_id", "knowledge_base_id"),
+    )
+
 class KnowledgeGraphNode(Base):
     __tablename__ = "knowledge_graph_nodes"
 
@@ -316,6 +349,23 @@ class MembershipPlan(Base):
     features = Column(JSON, default=None)
     free_app_ids = Column(JSON, default=None)
     free_model_ids = Column(JSON, default=None)
+    # 配额字段
+    max_agents = Column(Integer, default=5)
+    max_workflows = Column(Integer, default=3)
+    max_knowledge_bases = Column(Integer, default=2)
+    max_storage_mb = Column(Integer, default=1024)
+    api_calls_per_day = Column(Integer, default=100)
+    api_calls_per_min = Column(Integer, default=10)
+    # 权限字段
+    can_publish_apps = Column(Boolean, default=False)
+    can_create_api_keys = Column(Boolean, default=False)
+    can_use_workflow = Column(Boolean, default=False)
+    can_use_mcp = Column(Boolean, default=False)
+    can_use_code_exec = Column(Boolean, default=False)
+    can_use_privacy_mode = Column(Boolean, default=False)
+    can_use_dag = Column(Boolean, default=False)
+    allowed_model_tiers = Column(JSON, default=None)
+    permissions = Column(JSON, default=None)
     is_active = Column(Boolean, default=True)
     created_at = Column(DateTime, default=datetime.now)
     updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)
@@ -455,6 +505,7 @@ class AIModel(Base):
     id = Column(String(36), primary_key=True, default=gen_uuid)
     provider_id = Column(String(36), ForeignKey("model_providers.id"), nullable=False)
     name = Column(String(100), nullable=False)
+    display_name = Column(String(200), default=None, comment="display name")
     api_key = Column(String(255), default=None)
     endpoint = Column(String(500), default=None)
     capabilities = Column(JSON, default=None)
@@ -577,6 +628,7 @@ class EmailConfig(Base):
     password = Column(String(200), nullable=False)
     from_address = Column(String(200), nullable=False)
     use_tls = Column(Boolean, default=True)
+    use_ssl = Column(Boolean, default=False)
     created_at = Column(DateTime, default=datetime.now)
     updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)
 
@@ -742,6 +794,8 @@ class OpenApiClient(Base):
     rate_limit = Column(Integer, default=60)
     status = Column(String(10), nullable=False, default="active")
     created_at = Column(DateTime, default=datetime.now)
+    total_calls = Column(BigInteger, default=0, comment="总调用次数")
+    last_used_at = Column(DateTime, default=None, comment="最后使用时间")
 
 
 # ============================================================
@@ -935,3 +989,113 @@ class TeamSharedSkill(Base):
     __table_args__ = (
         UniqueConstraint("team_id", "skill_id", name="uk_tss_team_skill"),
     )
+
+
+class ExternalKBService(Base):
+    """外部知识库服务配置"""
+    __tablename__ = "external_kb_services"
+
+    id = Column(String(36), primary_key=True, default=gen_uuid)
+    name = Column(String(200), nullable=False)
+    service_type = Column(String(20), nullable=False)
+    api_url = Column(String(500), nullable=False)
+    api_key = Column(String(255), default="")
+    config = Column(JSON, default=None)
+    is_enabled = Column(Boolean, default=True)
+    status = Column(String(20), default="disconnected")
+    created_at = Column(DateTime, default=datetime.now)
+    updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)
+
+class OSSStorageConfig(Base):
+    __tablename__ = "oss_storage_configs"
+
+    id = Column(String(36), primary_key=True, default=gen_uuid)
+    name = Column(String(200), nullable=False)
+    provider = Column(String(20), nullable=False)
+    endpoint = Column(String(500), nullable=False)
+    access_key = Column(String(255), nullable=False)
+    secret_key = Column(String(255), nullable=False)
+    bucket = Column(String(200), nullable=False)
+    region = Column(String(100), default="")
+    base_path = Column(String(300), default="")
+    is_default = Column(Boolean, default=False)
+    is_enabled = Column(Boolean, default=True)
+    status = Column(String(20), default="disconnected")
+    config = Column(JSON, default=None)
+    created_at = Column(DateTime, default=datetime.now)
+    updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)
+
+
+
+class UserStorageQuota(Base):
+    __tablename__ = "user_storage_quotas"
+
+    id = Column(String(36), primary_key=True, default=gen_uuid)
+    user_id = Column(String(36), nullable=False, unique=True)
+    quota_bytes = Column(BigInteger, nullable=False, default=1073741824)
+    used_bytes = Column(BigInteger, nullable=False, default=0)
+    quota_type = Column(String(20), nullable=False, default="membership")
+    membership_level = Column(Integer, default=0)
+    plan_id = Column(String(36), default=None)
+    created_at = Column(DateTime, default=datetime.now)
+    updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)
+
+
+class AutomatedTask(Base):
+    __tablename__ = "automated_tasks"
+
+    id = Column(String(36), primary_key=True, default=gen_uuid)
+    name = Column(String(200), nullable=False)
+    description = Column(Text, default="")
+    trigger_type = Column(String(20), nullable=False)
+    cron_expression = Column(String(100), default=None)
+    event_condition = Column(JSON, default=None)
+    action_type = Column(String(30), nullable=False)
+    action_config = Column(JSON, default=None)
+    is_enabled = Column(Boolean, default=True)
+    status = Column(String(20), default="idle")
+    max_retries = Column(Integer, default=3)
+    timeout_seconds = Column(Integer, default=300)
+    last_run_at = Column(DateTime, default=None)
+    next_run_at = Column(DateTime, default=None)
+    total_runs = Column(Integer, default=0)
+    success_runs = Column(Integer, default=0)
+    created_at = Column(DateTime, default=datetime.now)
+    updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)
+
+class TaskExecutionLog(Base):
+    __tablename__ = "task_execution_logs"
+
+    id = Column(String(36), primary_key=True, default=gen_uuid)
+    task_id = Column(String(36), nullable=False)
+    task_name = Column(String(200), default="")
+    status = Column(String(20), default="running")
+    trigger_type = Column(String(20), default="manual")
+    started_at = Column(DateTime, default=None)
+    finished_at = Column(DateTime, default=None)
+    duration_ms = Column(Integer, default=0)
+    result_summary = Column(Text, default="")
+    error_message = Column(Text, default="")
+    created_at = Column(DateTime, default=datetime.now)
+
+
+
+class MCPServer(Base):
+    __tablename__ = "mcp_servers"
+
+    id = Column(String(36), primary_key=True, default=gen_uuid)
+    name = Column(String(100), nullable=False)
+    description = Column(Text, default="")
+    transport_type = Column(String(20), default="stdio")
+    command = Column(String(500), default="")
+    args = Column(Text, default="")
+    env_vars = Column(Text, default="")
+    url = Column(String(500), default="")
+    headers = Column(Text, default="")
+    is_enabled = Column(Boolean, default=True)
+    status = Column(String(20), default="disconnected")
+    last_connected_at = Column(DateTime, default=None)
+    tools_count = Column(Integer, default=0)
+    resources_count = Column(Integer, default=0)
+    created_at = Column(DateTime, default=datetime.now)
+    updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)