From 528fad30beada296979ce3e4c499f5deedcf813b Mon Sep 17 00:00:00 2001
From: huangzhuang_3rd <huangzhuang_3rd@tphai.com>
Date: Wed, 12 Aug 2026 13:30:43 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20AI=20Worker=20=E5=B9=B3=E5=8F=B0=20MVP?=
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---
 backend/app/models/artifact.py | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 backend/app/models/artifact.py

diff --git a/backend/app/models/artifact.py b/backend/app/models/artifact.py
new file mode 100644
index 0000000..9597362
--- /dev/null
+++ b/backend/app/models/artifact.py
@@ -0,0 +1,34 @@
+"""Artifact model - task deliverables with versioning."""
+from sqlalchemy import Column, String, Integer, Text, ForeignKey
+from app.models.base import Base, TimestampMixin, TenantMixin
+
+
+class Artifact(Base, TimestampMixin, TenantMixin):
+    """An artifact is a deliverable produced by a task.
+
+    Supports versioning: each task can have multiple artifact versions.
+    Type: text, code, document, data, image, mixed
+    """
+    __tablename__ = "artifacts"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    task_id = Column(Integer, ForeignKey("tasks.id"), nullable=False, index=True)
+    project_id = Column(Integer, ForeignKey("projects.id"), nullable=False)
+
+    title = Column(String(500), nullable=False)
+    content = Column(Text, default="")
+    artifact_type = Column(String(50), default="text")
+
+    # Versioning
+    version = Column(Integer, default=1)
+    is_latest = Column(String(10), default="true")
+
+    # Source attribution
+    created_by_user_id = Column(Integer, ForeignKey("users.id"), nullable=True)
+    created_by_worker_id = Column(Integer, ForeignKey("ai_workers.id"), nullable=True)
+
+    # Source references (for traceability - JSON array of source citations)
+    sources = Column(Text, default="[]")
+
+    def __repr__(self):
+        return f"<Artifact {self.title} v{self.version}>"