diff --git a/internal/admin/handler_accounts_testing.go b/internal/admin/handler_accounts_testing.go
index 7a7430d..262c809 100644
--- a/internal/admin/handler_accounts_testing.go
+++ b/internal/admin/handler_accounts_testing.go
@@ -1,212 +1,209 @@
-package admin
-
-import (
-	"bytes"
-	"context"
-	"encoding/json"
-	"fmt"
-	"io"
-	"net/http"
-	"strings"
-	"sync"
-	"time"
-
-	authn "ds2api/internal/auth"
-	"ds2api/internal/config"
-	"ds2api/internal/sse"
-)
-
-func (h *Handler) testSingleAccount(w http.ResponseWriter, r *http.Request) {
-	var req map[string]any
-	_ = json.NewDecoder(r.Body).Decode(&req)
-	identifier, _ := req["identifier"].(string)
-	if strings.TrimSpace(identifier) == "" {
-		writeJSON(w, http.StatusBadRequest, map[string]any{"detail": "需要账号标识（identifier / email / mobile）"})
-		return
-	}
-	acc, ok := findAccountByIdentifier(h.Store, identifier)
-	if !ok {
-		writeJSON(w, http.StatusNotFound, map[string]any{"detail": "账号不存在"})
-		return
-	}
-	model, _ := req["model"].(string)
-	if model == "" {
-		model = "deepseek-chat"
-	}
-	message, _ := req["message"].(string)
-	result := h.testAccount(r.Context(), acc, model, message)
-	writeJSON(w, http.StatusOK, result)
-}
-
-func (h *Handler) testAllAccounts(w http.ResponseWriter, r *http.Request) {
-	var req map[string]any
-	_ = json.NewDecoder(r.Body).Decode(&req)
-	model, _ := req["model"].(string)
-	if model == "" {
-		model = "deepseek-chat"
-	}
-	accounts := h.Store.Snapshot().Accounts
-	if len(accounts) == 0 {
-		writeJSON(w, http.StatusOK, map[string]any{"total": 0, "success": 0, "failed": 0, "results": []any{}})
-		return
-	}
-
-	// Concurrent testing with a semaphore to limit parallelism.
-	const maxConcurrency = 5
-	results := runAccountTestsConcurrently(accounts, maxConcurrency, func(_ int, account config.Account) map[string]any {
-		return h.testAccount(r.Context(), account, model, "")
-	})
-
-	success := 0
-	for _, res := range results {
-		if ok, _ := res["success"].(bool); ok {
-			success++
-		}
-	}
-	writeJSON(w, http.StatusOK, map[string]any{"total": len(accounts), "success": success, "failed": len(accounts) - success, "results": results})
-}
-
-func runAccountTestsConcurrently(accounts []config.Account, maxConcurrency int, testFn func(int, config.Account) map[string]any) []map[string]any {
-	if maxConcurrency <= 0 {
-		maxConcurrency = 1
-	}
-	sem := make(chan struct{}, maxConcurrency)
-	results := make([]map[string]any, len(accounts))
-	var wg sync.WaitGroup
-	for i, acc := range accounts {
-		wg.Add(1)
-		go func(idx int, account config.Account) {
-			defer wg.Done()
-			sem <- struct{}{}        // acquire
-			defer func() { <-sem }() // release
-			results[idx] = testFn(idx, account)
-		}(i, acc)
-	}
-	wg.Wait()
-	return results
-}
-
-func (h *Handler) testAccount(ctx context.Context, acc config.Account, model, message string) map[string]any {
-	start := time.Now()
-	identifier := acc.Identifier()
-	result := map[string]any{"account": identifier, "success": false, "response_time": 0, "message": "", "model": model}
-	defer func() {
-		status := "failed"
-		if ok, _ := result["success"].(bool); ok {
-			status = "ok"
-		}
-		_ = h.Store.UpdateAccountTestStatus(identifier, status)
-	}()
-	token := strings.TrimSpace(acc.Token)
-	if token == "" {
-		newToken, err := h.DS.Login(ctx, acc)
-		if err != nil {
-			result["message"] = "登录失败: " + err.Error()
-			return result
-		}
-		token = newToken
-		_ = h.Store.UpdateAccountToken(acc.Identifier(), token)
-	}
-	authCtx := &authn.RequestAuth{UseConfigToken: false, DeepSeekToken: token}
-	sessionID, err := h.DS.CreateSession(ctx, authCtx, 1)
-	if err != nil {
-		newToken, loginErr := h.DS.Login(ctx, acc)
-		if loginErr != nil {
-			result["message"] = "创建会话失败: " + err.Error()
-			return result
-		}
-		token = newToken
-		authCtx.DeepSeekToken = token
-		_ = h.Store.UpdateAccountToken(acc.Identifier(), token)
-		sessionID, err = h.DS.CreateSession(ctx, authCtx, 1)
-		if err != nil {
-			result["message"] = "创建会话失败: " + err.Error()
-			return result
-		}
-	}
-	if strings.TrimSpace(message) == "" {
-		result["success"] = true
-		result["message"] = "API 测试成功（仅会话创建）"
-		result["response_time"] = int(time.Since(start).Milliseconds())
-		return result
-	}
-	thinking, search, ok := config.GetModelConfig(model)
-	if !ok {
-		thinking, search = false, false
-	}
-	_ = search
-	pow, err := h.DS.GetPow(ctx, authCtx, 1)
-	if err != nil {
-		result["message"] = "获取 PoW 失败: " + err.Error()
-		return result
-	}
-	payload := map[string]any{"chat_session_id": sessionID, "prompt": "<｜User｜>" + message, "ref_file_ids": []any{}, "thinking_enabled": thinking, "search_enabled": search}
-	resp, err := h.DS.CallCompletion(ctx, authCtx, payload, pow, 1)
-	if err != nil {
-		result["message"] = "请求失败: " + err.Error()
-		return result
-	}
-	if resp.StatusCode != http.StatusOK {
-		defer resp.Body.Close()
-		result["message"] = fmt.Sprintf("请求失败: HTTP %d", resp.StatusCode)
-		return result
-	}
-	collected := sse.CollectStream(resp, thinking, true)
-	result["success"] = true
-	result["response_time"] = int(time.Since(start).Milliseconds())
-	if collected.Text != "" {
-		result["message"] = collected.Text
-	} else {
-		result["message"] = "（无回复内容）"
-	}
-	if collected.Thinking != "" {
-		result["thinking"] = collected.Thinking
-	}
-	return result
-}
-
-func (h *Handler) testAPI(w http.ResponseWriter, r *http.Request) {
-	var req map[string]any
-	_ = json.NewDecoder(r.Body).Decode(&req)
-	model, _ := req["model"].(string)
-	message, _ := req["message"].(string)
-	apiKey, _ := req["api_key"].(string)
-	if model == "" {
-		model = "deepseek-chat"
-	}
-	if message == "" {
-		message = "你好"
-	}
-	if apiKey == "" {
-		keys := h.Store.Snapshot().Keys
-		if len(keys) == 0 {
-			writeJSON(w, http.StatusBadRequest, map[string]any{"detail": "没有可用的 API Key"})
-			return
-		}
-		apiKey = keys[0]
-	}
-	host := r.Host
-	scheme := "http"
-	if strings.Contains(strings.ToLower(host), "vercel") || strings.Contains(strings.ToLower(r.Header.Get("X-Forwarded-Proto")), "https") {
-		scheme = "https"
-	}
-	payload := map[string]any{"model": model, "messages": []map[string]any{{"role": "user", "content": message}}, "stream": false}
-	b, _ := json.Marshal(payload)
-	request, _ := http.NewRequestWithContext(r.Context(), http.MethodPost, fmt.Sprintf("%s://%s/v1/chat/completions", scheme, host), bytes.NewReader(b))
-	request.Header.Set("Authorization", "Bearer "+apiKey)
-	request.Header.Set("Content-Type", "application/json")
-	resp, err := (&http.Client{Timeout: 60 * time.Second}).Do(request)
-	if err != nil {
-		writeJSON(w, http.StatusOK, map[string]any{"success": false, "error": err.Error()})
-		return
-	}
-	defer resp.Body.Close()
-	body, _ := io.ReadAll(resp.Body)
-	if resp.StatusCode == http.StatusOK {
-		var parsed any
-		_ = json.Unmarshal(body, &parsed)
-		writeJSON(w, http.StatusOK, map[string]any{"success": true, "status_code": resp.StatusCode, "response": parsed})
-		return
-	}
-	writeJSON(w, http.StatusOK, map[string]any{"success": false, "status_code": resp.StatusCode, "response": string(body)})
-}
+package admin
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"sync"
+	"time"
+
+	authn "ds2api/internal/auth"
+	"ds2api/internal/config"
+	"ds2api/internal/sse"
+)
+
+func (h *Handler) testSingleAccount(w http.ResponseWriter, r *http.Request) {
+	var req map[string]any
+	_ = json.NewDecoder(r.Body).Decode(&req)
+	identifier, _ := req["identifier"].(string)
+	if strings.TrimSpace(identifier) == "" {
+		writeJSON(w, http.StatusBadRequest, map[string]any{"detail": "需要账号标识（identifier / email / mobile）"})
+		return
+	}
+	acc, ok := findAccountByIdentifier(h.Store, identifier)
+	if !ok {
+		writeJSON(w, http.StatusNotFound, map[string]any{"detail": "账号不存在"})
+		return
+	}
+	model, _ := req["model"].(string)
+	if model == "" {
+		model = "deepseek-chat"
+	}
+	message, _ := req["message"].(string)
+	result := h.testAccount(r.Context(), acc, model, message)
+	writeJSON(w, http.StatusOK, result)
+}
+
+func (h *Handler) testAllAccounts(w http.ResponseWriter, r *http.Request) {
+	var req map[string]any
+	_ = json.NewDecoder(r.Body).Decode(&req)
+	model, _ := req["model"].(string)
+	if model == "" {
+		model = "deepseek-chat"
+	}
+	accounts := h.Store.Snapshot().Accounts
+	if len(accounts) == 0 {
+		writeJSON(w, http.StatusOK, map[string]any{"total": 0, "success": 0, "failed": 0, "results": []any{}})
+		return
+	}
+
+	// Concurrent testing with a semaphore to limit parallelism.
+	const maxConcurrency = 5
+	results := runAccountTestsConcurrently(accounts, maxConcurrency, func(_ int, account config.Account) map[string]any {
+		return h.testAccount(r.Context(), account, model, "")
+	})
+
+	success := 0
+	for _, res := range results {
+		if ok, _ := res["success"].(bool); ok {
+			success++
+		}
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"total": len(accounts), "success": success, "failed": len(accounts) - success, "results": results})
+}
+
+func runAccountTestsConcurrently(accounts []config.Account, maxConcurrency int, testFn func(int, config.Account) map[string]any) []map[string]any {
+	if maxConcurrency <= 0 {
+		maxConcurrency = 1
+	}
+	sem := make(chan struct{}, maxConcurrency)
+	results := make([]map[string]any, len(accounts))
+	var wg sync.WaitGroup
+	for i, acc := range accounts {
+		wg.Add(1)
+		go func(idx int, account config.Account) {
+			defer wg.Done()
+			sem <- struct{}{}        // acquire
+			defer func() { <-sem }() // release
+			results[idx] = testFn(idx, account)
+		}(i, acc)
+	}
+	wg.Wait()
+	return results
+}
+
+func (h *Handler) testAccount(ctx context.Context, acc config.Account, model, message string) map[string]any {
+	start := time.Now()
+	identifier := acc.Identifier()
+	result := map[string]any{"account": identifier, "success": false, "response_time": 0, "message": "", "model": model}
+	defer func() {
+		status := "failed"
+		if ok, _ := result["success"].(bool); ok {
+			status = "ok"
+		}
+		_ = h.Store.UpdateAccountTestStatus(identifier, status)
+	}()
+	token := strings.TrimSpace(acc.Token)
+	if token == "" {
+		newToken, err := h.DS.Login(ctx, acc)
+		if err != nil {
+			result["message"] = "登录失败: " + err.Error()
+			return result
+		}
+		token = newToken
+		_ = h.Store.UpdateAccountToken(acc.Identifier(), token)
+	}
+	authCtx := &authn.RequestAuth{UseConfigToken: false, DeepSeekToken: token}
+	sessionID, err := h.DS.CreateSession(ctx, authCtx, 1)
+	if err != nil {
+		newToken, loginErr := h.DS.Login(ctx, acc)
+		if loginErr != nil {
+			result["message"] = "创建会话失败: " + err.Error()
+			return result
+		}
+		token = newToken
+		authCtx.DeepSeekToken = token
+		_ = h.Store.UpdateAccountToken(acc.Identifier(), token)
+		sessionID, err = h.DS.CreateSession(ctx, authCtx, 1)
+		if err != nil {
+			result["message"] = "创建会话失败: " + err.Error()
+			return result
+		}
+	}
+	if strings.TrimSpace(message) == "" {
+		message = "你是谁？"
+	}
+	thinking, search, ok := config.GetModelConfig(model)
+	if !ok {
+		thinking, search = false, false
+	}
+	_ = search
+	pow, err := h.DS.GetPow(ctx, authCtx, 1)
+	if err != nil {
+		result["message"] = "获取 PoW 失败: " + err.Error()
+		return result
+	}
+	payload := map[string]any{"chat_session_id": sessionID, "prompt": "<｜User｜>" + message, "ref_file_ids": []any{}, "thinking_enabled": thinking, "search_enabled": search}
+	resp, err := h.DS.CallCompletion(ctx, authCtx, payload, pow, 1)
+	if err != nil {
+		result["message"] = "请求失败: " + err.Error()
+		return result
+	}
+	if resp.StatusCode != http.StatusOK {
+		defer resp.Body.Close()
+		result["message"] = fmt.Sprintf("请求失败: HTTP %d", resp.StatusCode)
+		return result
+	}
+	collected := sse.CollectStream(resp, thinking, true)
+	result["success"] = true
+	result["response_time"] = int(time.Since(start).Milliseconds())
+	if collected.Text != "" {
+		result["message"] = collected.Text
+	} else {
+		result["message"] = "（无回复内容）"
+	}
+	if collected.Thinking != "" {
+		result["thinking"] = collected.Thinking
+	}
+	return result
+}
+
+func (h *Handler) testAPI(w http.ResponseWriter, r *http.Request) {
+	var req map[string]any
+	_ = json.NewDecoder(r.Body).Decode(&req)
+	model, _ := req["model"].(string)
+	message, _ := req["message"].(string)
+	apiKey, _ := req["api_key"].(string)
+	if model == "" {
+		model = "deepseek-chat"
+	}
+	if message == "" {
+		message = "你好"
+	}
+	if apiKey == "" {
+		keys := h.Store.Snapshot().Keys
+		if len(keys) == 0 {
+			writeJSON(w, http.StatusBadRequest, map[string]any{"detail": "没有可用的 API Key"})
+			return
+		}
+		apiKey = keys[0]
+	}
+	host := r.Host
+	scheme := "http"
+	if strings.Contains(strings.ToLower(host), "vercel") || strings.Contains(strings.ToLower(r.Header.Get("X-Forwarded-Proto")), "https") {
+		scheme = "https"
+	}
+	payload := map[string]any{"model": model, "messages": []map[string]any{{"role": "user", "content": message}}, "stream": false}
+	b, _ := json.Marshal(payload)
+	request, _ := http.NewRequestWithContext(r.Context(), http.MethodPost, fmt.Sprintf("%s://%s/v1/chat/completions", scheme, host), bytes.NewReader(b))
+	request.Header.Set("Authorization", "Bearer "+apiKey)
+	request.Header.Set("Content-Type", "application/json")
+	resp, err := (&http.Client{Timeout: 60 * time.Second}).Do(request)
+	if err != nil {
+		writeJSON(w, http.StatusOK, map[string]any{"success": false, "error": err.Error()})
+		return
+	}
+	defer resp.Body.Close()
+	body, _ := io.ReadAll(resp.Body)
+	if resp.StatusCode == http.StatusOK {
+		var parsed any
+		_ = json.Unmarshal(body, &parsed)
+		writeJSON(w, http.StatusOK, map[string]any{"success": true, "status_code": resp.StatusCode, "response": parsed})
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"success": false, "status_code": resp.StatusCode, "response": string(body)})
+}