feat: add persistent chat agent and indexed batch workflows

backend/wisegrade/exports.py

@@ -36,6 +36,15 @@ def project_result(db, batch: ScoringBatch, project: Project):
             "totals": totals_, "rows": rows, "facts": project.facts}
 
 
+def batch_projects(db, batch: ScoringBatch):
+    if batch.project_ids is None:
+        return db.scalars(select(Project).where(Project.course_version_id == batch.course_version_id).order_by(Project.id)).all()
+    if not batch.project_ids:
+        return []
+    by_id = {project.id: project for project in db.scalars(select(Project).where(Project.id.in_(batch.project_ids))).all()}
+    return [by_id[project_id] for project_id in batch.project_ids if project_id in by_id]
+
+
 def export_excel(db, batch_id: int):
     batch = db.get(ScoringBatch, batch_id)
     if not batch:
@@ -52,7 +61,7 @@ def export_excel(db, batch_id: int):
         sheet.title = "成绩"
         final_criteria = [c for c in batch.rubric_snapshot["criteria"] if c["category"] == "final"]
         sheet.append(["学号", "姓名", "选题", "阶段报告1", "阶段报告2", "阶段报告3", *[c["name"] for c in final_criteria], "期末成绩", "总评", "状态", "批次", "规则版本"])
-        for project in db.scalars(select(Project).where(Project.course_version_id == batch.course_version_id).order_by(Project.id)):
+        for project in batch_projects(db, batch):
             result = project_result(db, batch, project)
             scores = {row["criterion"]["criterion_id"]: row["final_score"] for row in result["rows"]}
             totals_ = result["totals"]
@@ -108,7 +117,7 @@ def _html_report(result, batch):
 def export_project_pdf(db, batch_id: int, project_id: int):
     batch = db.get(ScoringBatch, batch_id)
     project = db.get(Project, project_id)
-    if not batch or not project or project.course_version_id != batch.course_version_id:
+    if not batch or not project or project.course_version_id != batch.course_version_id or (batch.project_ids is not None and project_id not in batch.project_ids):
         raise ValueError("批次或项目不存在")
     root = get_settings().exports_path
     root.mkdir(parents=True, exist_ok=True)