feat: 支持会话内补传资料并保持绑定

apps/chat/forms.py

@@ -1,4 +1,7 @@
 from django import forms
+from pathlib import Path
+
+from apps.documents.forms import MultipleFileField, SUPPORTED_EXTENSIONS
 
 
 class ChatForm(forms.Form):
@@ -38,3 +41,23 @@ class ChatForm(forms.Form):
     def clean_document_ids(self):
         # View 与 Agent Core 都使用整型文档 ID，统一在表单层完成转换。
         return [int(document_id) for document_id in self.cleaned_data.get("document_ids", [])]
+
+
+class ConversationUploadForm(forms.Form):
+    # 会话右侧上传区只负责继续补传资料，不修改会话绑定关系。
+    files = MultipleFileField(label="补充文件或资料包", required=False)
+    file = forms.FileField(label="兼容单文件上传", required=False)
+
+    def clean(self):
+        cleaned_data = super().clean()
+        files = list(cleaned_data.get("files") or [])
+        file = cleaned_data.get("file")
+        if file:
+            files.append(file)
+        if not files:
+            raise forms.ValidationError("请至少上传一个文件或资料包。")
+        for uploaded_file in files:
+            if Path(uploaded_file.name).suffix.lower() not in SUPPORTED_EXTENSIONS:
+                raise forms.ValidationError("仅支持 .txt、.md、.pdf、.docx、.zip 和 .7z 文件")
+        cleaned_data["uploaded_files"] = files
+        return cleaned_data

apps/chat/urls.py

@@ -9,4 +9,5 @@ app_name = "chat"
 urlpatterns = [
     path("", views.index, name="index"),
     path("<str:conversation_id>/", views.detail, name="detail"),
+    path("<str:conversation_id>/upload/", views.upload_documents, name="upload-documents"),
 ]

apps/chat/views.py

@@ -1,14 +1,17 @@
+from django.contrib import messages
 from django.utils import timezone
 from django.shortcuts import get_object_or_404, redirect, render
 from django.urls import reverse
+from django.views.decorators.http import require_POST
 
 from agent_core.orchestrator import run_agent
 from agent_core.results import AgentResult
 from apps.audit.services import create_audit_log, create_notification_record
 from apps.documents.models import SubmissionBatch, UploadedDocument
+from apps.documents.services import append_documents_to_batch
 from apps.scenarios.services import get_scenario
 
-from .forms import ChatForm
+from .forms import ChatForm, ConversationUploadForm
 from .models import Conversation
 
 
@@ -37,6 +40,7 @@ def detail(request, conversation_id: str):
     batch = SubmissionBatch.objects.filter(batch_id=conversation.batch_id).first()
     documents = UploadedDocument.objects.filter(batch=batch)
     form = ChatForm(request.POST or None, documents=documents)
+    upload_form = ConversationUploadForm()
     result = None
     audit_log = None
     active_node = None
@@ -97,10 +101,35 @@ def detail(request, conversation_id: str):
             "node_results": conversation.node_results,
             "active_node": active_node,
             "workspace_summary": workspace_summary,
+            "upload_form": upload_form,
         },
     )
 
 
+@require_POST
+def upload_documents(request, conversation_id: str):
+    conversation = get_object_or_404(Conversation, conversation_id=conversation_id)
+    batch = get_object_or_404(SubmissionBatch, batch_id=conversation.batch_id)
+    upload_form = ConversationUploadForm(request.POST, request.FILES)
+    if upload_form.is_valid():
+        result = append_documents_to_batch(
+            "document_review",
+            batch,
+            upload_form.cleaned_data["uploaded_files"],
+        )
+        warning_count = len(result["registration_overview_report"]["warnings"])
+        message = "资料已补充到当前资料包。"
+        if warning_count:
+            message += f" 当前有 {warning_count} 条待复核提示。"
+        messages.success(request, message)
+    else:
+        messages.error(
+            request,
+            "补充资料失败：" + " ".join(upload_form.non_field_errors()) if upload_form.non_field_errors() else "补充资料失败。",
+        )
+    return redirect("chat:detail", conversation_id=conversation.conversation_id)
+
+
 def _persist_notification_records(result: AgentResult, *, web_detail_url: str = "") -> None:
     payload = result.notification_payload or {}
     owners = payload.get("owners") or []