feat: 重构资料包模型与会话绑定主链路

apps/documents/models.py

@@ -1,6 +1,48 @@
 from django.db import models
 
 
+class SubmissionBatch(models.Model):
+    """
+    资料包主对象，承接导入、会话绑定和目录汇总结果。
+
+    Documents 模块负责维护资料包与文件的关系，
+    不在模型层耦合 Agent 执行细节。
+    """
+
+    STATUS_PENDING = "pending"
+    STATUS_PROCESSING = "processing"
+    STATUS_COMPLETED = "completed"
+    STATUS_REVIEW_REQUIRED = "review_required"
+    STATUS_FAILED = "failed"
+
+    batch_id = models.CharField(max_length=64, unique=True, db_index=True)
+    product_name = models.CharField(max_length=255, blank=True, db_index=True)
+    workflow_type = models.CharField(max_length=64, default="registration")
+    conversation_id = models.CharField(max_length=64, blank=True, db_index=True)
+    file_count = models.PositiveIntegerField(default=0)
+    page_count = models.PositiveIntegerField(default=0)
+    chapter_summary = models.JSONField(default=list, blank=True)
+    import_status = models.CharField(max_length=32, default=STATUS_PENDING, db_index=True)
+    exception_count = models.PositiveIntegerField(default=0)
+    created_at = models.DateTimeField(auto_now_add=True, db_index=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        ordering = ["-created_at"]
+
+    def __str__(self) -> str:
+        return self.product_name or self.batch_id
+
+    def get_import_status_display_text(self) -> str:
+        return {
+            self.STATUS_PENDING: "待导入",
+            self.STATUS_PROCESSING: "处理中",
+            self.STATUS_COMPLETED: "已完成",
+            self.STATUS_REVIEW_REQUIRED: "待复核",
+            self.STATUS_FAILED: "失败",
+        }.get(self.import_status, self.import_status)
+
+
 class UploadedDocument(models.Model):
     """
     保存用户上传文档的元数据和入库状态。
@@ -13,11 +55,25 @@ class UploadedDocument(models.Model):
     STATUS_INDEXED = "indexed"
     STATUS_FAILED = "failed"
 
+    batch = models.ForeignKey(
+        SubmissionBatch,
+        related_name="documents",
+        null=True,
+        blank=True,
+        on_delete=models.CASCADE,
+    )
     scenario_id = models.CharField(max_length=100, db_index=True)
     original_name = models.CharField(max_length=255)
     file = models.FileField(upload_to="documents/%Y%m%d/")
     file_type = models.CharField(max_length=20)
     size = models.PositiveIntegerField(default=0)
+    relative_path = models.CharField(max_length=500, blank=True)
+    chapter_code = models.CharField(max_length=32, blank=True)
+    document_role = models.CharField(max_length=64, blank=True)
+    page_count = models.PositiveIntegerField(default=0)
+    page_count_confidence = models.CharField(max_length=32, blank=True)
+    chapter_match_status = models.CharField(max_length=32, blank=True)
+    needs_manual_review = models.BooleanField(default=False)
     status = models.CharField(max_length=20, default=STATUS_UPLOADED, db_index=True)
     error_message = models.TextField(blank=True)
     created_at = models.DateTimeField(auto_now_add=True)