Improve image upload in debug drawer

backend/.env.example

@@ -9,11 +9,14 @@ DATABASE_URL=postgresql+asyncpg://postgres:postgres@localhost:5432/postgres
 # ---- 服务监听 & 跨域 ----
 HOST=0.0.0.0
 PORT=8000
+# NLTK 3.9+ import guard vs local .venv under backend/ (set in app.py by default; override here if needed)
+# NLTK_DISABLE_IMPORT_SECURITY=1
 # 前端开发地址,允许跨域(公网部署时加上实际前端 origin)
 CORS_ORIGINS=http://localhost:3000,http://127.0.0.1:3000
 
 # ---- RustFS / S3-compatible storage ----
-S3_ENDPOINT_URL=http://localhost:9000
+# Use 127.0.0.1 (not localhost) if HTTP_PROXY is set — proxies often return 502 for localhost.
+S3_ENDPOINT_URL=http://127.0.0.1:9000
 S3_ACCESS_KEY=rustfsadmin
 S3_SECRET_KEY=rustfsadmin
 S3_BUCKET=ai-video

backend/app.py

@@ -12,6 +12,12 @@
   /api/webrtc/ice-servers  WebRTC STUN/TURN 配置
 """
 
+import os
+
+# NLTK 3.9+ blocks dependency imports when .venv lives under cwd (local dev layout).
+# pipecat -> nltk -> regex hits this false positive; disable before any nltk import.
+os.environ.setdefault("NLTK_DISABLE_IMPORT_SECURITY", "1")
+
 from contextlib import asynccontextmanager
 
 import settings

backend/services/conversation_history.py

@@ -235,6 +235,9 @@ class ConversationRecorder:
                             },
                         )
                     )
+                    # Flush before artifact insert: db.get() below autoflushes and
+                    # can otherwise write conversation_artifacts first (FK violation).
+                    await db.flush()
                     db.add(
                         ConversationArtifact(
                             id=artifact_id,

backend/settings.py

@@ -52,7 +52,7 @@ TURN_PASSWORD = os.getenv("TURN_PASSWORD", "")
 TURN_CREDENTIAL_TTL = int(os.getenv("TURN_CREDENTIAL_TTL", "86400"))
 
 # ---- S3-compatible object storage (RustFS in local compose) ----
-S3_ENDPOINT_URL = os.getenv("S3_ENDPOINT_URL", "http://localhost:9000")
+S3_ENDPOINT_URL = os.getenv("S3_ENDPOINT_URL", "http://127.0.0.1:9000")
 S3_ACCESS_KEY = os.getenv("S3_ACCESS_KEY", "rustfsadmin")
 S3_SECRET_KEY = os.getenv("S3_SECRET_KEY", "rustfsadmin")
 S3_BUCKET = os.getenv("S3_BUCKET", "ai-video")

backend/tests/test_conversation_history.py

@@ -122,6 +122,9 @@ class ConversationRecorderTest(unittest.IsolatedAsyncioTestCase):
             def add(self, value):
                 self.added.append(value)
 
+            async def flush(self):
+                return None
+
             async def get(self, _model, _session_id):
                 return conversation
 

frontend/src/components/assistant-editor/debug-preview.tsx

@@ -1,7 +1,7 @@
 "use client";
 
 import type React from "react";
-import { useCallback, useEffect, useRef, useState } from "react";
+import { useCallback, useEffect, useLayoutEffect, useRef, useState } from "react";
 import {
   AudioLines,
   Braces,
@@ -1636,12 +1636,26 @@ function DebugTranscriptPanel({
   recording?: boolean;
 }) {
   const scrollRef = useRef<HTMLDivElement>(null);
+  const contentRef = useRef<HTMLDivElement>(null);
 
-  // 新消息时滚到底部
-  useEffect(() => {
+  const scrollToBottom = useCallback(() => {
     const el = scrollRef.current;
     if (el) el.scrollTop = el.scrollHeight;
-  }, [messages]);
+  }, []);
+
+  // Scroll when message list changes (before paint).
+  useLayoutEffect(() => {
+    scrollToBottom();
+  }, [messages, scrollToBottom]);
+
+  // Images load after the message row mounts; re-scroll when content height grows.
+  useEffect(() => {
+    const content = contentRef.current;
+    if (!content) return;
+    const observer = new ResizeObserver(() => scrollToBottom());
+    observer.observe(content);
+    return () => observer.disconnect();
+  }, [scrollToBottom]);
 
   if (messages.length === 0) {
     return (
@@ -1671,7 +1685,7 @@ function DebugTranscriptPanel({
       ref={scrollRef}
       className="scrollbar-subtle flex min-h-0 flex-1 flex-col overflow-y-auto px-5 py-4"
     >
-      <div className="flex flex-col gap-4">
+      <div ref={contentRef} className="flex flex-col gap-4">
         {messages.map((message) => {
           const time = formatMessageTime(message.timestamp);
           return message.role === "assistant" ? (
@@ -1707,6 +1721,7 @@ function DebugTranscriptPanel({
                     src={attachment.url}
                     alt={attachment.alt}
                     className="max-h-72 w-full rounded-[0.8rem] object-cover"
+                    onLoad={scrollToBottom}
                   />
                 ))}
                 {message.content && (