feat: add /version endpoint + resolution ticket tested

app/main.py

@@ -291,3 +291,14 @@ def remove_project_member(project_id: int, user_id: int, db: Session = Depends(g
     db.delete(member)
     db.commit()
     return None
+
+
+# ============ System API ============
+
+@app.get("/version")
+def version():
+    return {
+        "name": "HarborForge",
+        "version": "0.1.0",
+        "description": "Agent/人类协同任务管理平台"
+    }