feat: Add base project structure with API and web components

api/app/models/app_release_model.py

@@ -0,0 +1,68 @@
+import datetime
+import uuid
+from sqlalchemy import Column, String, Boolean, DateTime, Integer, ForeignKey, UniqueConstraint
+from sqlalchemy.dialects.postgresql import UUID, JSON
+from sqlalchemy.orm import relationship
+from app.db import Base
+from app.models.app_model import IconType
+
+
+class AppRelease(Base):
+    __tablename__ = "app_releases"
+    __table_args__ = (
+        UniqueConstraint("app_id", "version", name="uq_app_release_app_version"),
+    )
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4, index=True)
+    app_id = Column(UUID(as_uuid=True), ForeignKey("apps.id"), nullable=False, index=True)
+
+    # 版本号（按应用内递增）
+    version = Column(Integer, nullable=False, default=1, index=True)
+    # 版本号，显示用
+    version_name = Column(String, nullable=False)
+    # 版本说明
+    release_notes = Column(String, nullable=True, comment="版本说明")
+
+    # 基础信息快照（发布时冻结）
+    name = Column(String, nullable=False)
+    description = Column(String, nullable=True)
+    icon = Column(String, nullable=True)
+    icon_type = Column(String, nullable=True)
+    type = Column(String, nullable=False)
+    visibility = Column(String, default="private")
+
+    # 类型特定配置快照（针对 agent/workflow 等统一存放）
+    config = Column(JSON, default=dict)
+
+    # 便于查询的索引字段（例如 agent 的默认模型）
+    default_model_config_id = Column(UUID(as_uuid=True), ForeignKey("model_configs.id"), nullable=True, index=True)
+
+    # 发布信息
+    published_by = Column(UUID(as_uuid=True), nullable=False, comment="users.id")
+    published_at = Column(DateTime, default=datetime.datetime.now)
+
+    is_active = Column(Boolean, default=True, nullable=False)
+    created_at = Column(DateTime, default=datetime.datetime.now)
+    updated_at = Column(DateTime, default=datetime.datetime.now, onupdate=datetime.datetime.now)
+
+    # 关系: 指定外键，避免与 App.current_release_id 引起歧义
+    app = relationship("App", back_populates="releases", foreign_keys=[app_id])
+    
+    # 发布人关系 - 使用 primaryjoin 明确指定关联条件
+    publisher = relationship(
+        "User",
+        primaryjoin="AppRelease.published_by == User.id",
+        foreign_keys=[published_by],
+        lazy="joined",
+        viewonly=True  # 只读关系，不会尝试更新
+    )
+    
+    @property
+    def publisher_name(self) -> str:
+        """发布人名称"""
+        if self.publisher:
+            return self.publisher.username or self.publisher.email or "未知用户"
+        return "未知用户"
+    
+    def __repr__(self):
+        return f"<AppRelease(id={self.id}, app_id={self.app_id}, version={self.version})>"