fix: resolve routing, i18n, user management, UI, and OpenAPI/frontend configuration issues

Makefile

@@ -36,7 +36,8 @@ LAZYRAG_AUTH_API_PERMISSIONS_FILE ?=
 # Core / ACL
 ACL_DB_DRIVER ?= postgres
 ACL_DB_DSN ?= host=db user=app password=app dbname=app port=5432 sslmode=disable TimeZone=UTC
-LAZYRAG_CHAT_SERVICE_URL ?= http://localhost:8046
+# For docker-compose, core reaches chat via service DNS name.
+LAZYRAG_CHAT_SERVICE_URL ?= http://chat:8046
 
 # Processor
 LAZYRAG_DOCUMENT_PROCESSOR_PORT ?= 8000

algorithm/chat/chat.py

@@ -283,7 +283,7 @@ async def health():
 @app.post('/api/chat/stream', summary='与知识库对话')
 async def chat(
     query: str = Body(..., description='用户问题'),  # noqa: B008
-    history: List[History] = Body(default=None, description='历史对话，可为 list 或省略（代理可能传为 {}）'),  # noqa: B008
+    history: List[History] = Body(default_factory=list, description='历史对话，可为 list 或省略（代理可能传为 {}）'),  # noqa: B008
     session_id: str = Body('session_id', description='会话 ID'),  # noqa: B008
     filters: Optional[Dict[str, Any]] = Body(None, description='检索过滤条件'),  # noqa: B008
     files: Optional[List[str]] = Body(None, description='上传临时文件'),  # noqa: B008

backend/core/chat/chat.go

@@ -7,6 +7,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"net"
 	"net/http"
 	"strings"
@@ -139,6 +140,7 @@ func (c *ChatService) StreamChat(ctx context.Context, req *LazyChatRequest) (<-c
 	if err != nil {
 		return nil, err
 	}
+	fmt.Println("DEBUG upstream request url=", c.streamChatURL, " body=", string(bodyBytes))
 	httpReq, err := http.NewRequestWithContext(ctx, http.MethodPost, c.streamChatURL, bytes.NewReader(bodyBytes))
 	if err != nil {
 		return nil, err
@@ -147,8 +149,10 @@ func (c *ChatService) StreamChat(ctx context.Context, req *LazyChatRequest) (<-c
 
 	resp, err := c.client.Do(httpReq)
 	if err != nil {
+		fmt.Println("DEBUG upstream request failed url=", c.streamChatURL, " err=", err)
 		return nil, err
 	}
+	fmt.Println("DEBUG upstream response url=", c.streamChatURL, " status=", resp.StatusCode)
 	if resp.StatusCode != http.StatusOK {
 		resp.Body.Close()
 		return nil, errors.New("upstream /api/chat_stream returned non-200")
@@ -208,6 +212,7 @@ type upstreamStreamLine struct {
 // body textRequest JSON text map text，baseURL text endpoint（text /api/...）。
 func StreamChatUpstream(ctx context.Context, baseURL string, body map[string]any) (<-chan UpstreamStreamChunk, error) {
 	service := NewChatServiceWithEndpoint(baseURL)
+	fmt.Printf("DEBUG upstream stream request baseURL=%s params=%+v\n", baseURL, body)
 
 	req := &LazyChatRequest{}
 	if q, ok := body["query"].(string); ok {

backend/core/chat/conversation_api_support.go

@@ -15,7 +15,7 @@ func chatServiceURL() string {
 	if u := os.Getenv("LAZYRAG_CHAT_SERVICE_URL"); u != "" {
 		return u
 	}
-	return "http://localhost:8048"
+	return "http://chat:8046"
 }
 
 func extractMessageForACL(r *http.Request, body []byte) (userID string, items []common.ACLCheckItem) {