feat: add tracking for auth request success and failure counts

- Introduced `Success` and `Failed` fields in auth records to track request outcomes.
- Updated `/v0/management/auth-files` and `/v0/management/api-key-usage` responses to include success and failure counts.
- Enhanced tests to validate tracking logic and API responses.

internal/api/handlers/management/api_key_usage.go

@@ -9,6 +9,12 @@ import (
 	coreauth "github.com/router-for-me/CLIProxyAPI/v6/sdk/cliproxy/auth"
 )
 
+type apiKeyUsageEntry struct {
+	Success        int64                          `json:"success"`
+	Failed         int64                          `json:"failed"`
+	RecentRequests []coreauth.RecentRequestBucket `json:"recent_requests"`
+}
+
 func mergeRecentRequestBuckets(dst, src []coreauth.RecentRequestBucket) []coreauth.RecentRequestBucket {
 	if len(dst) == 0 {
 		return src
@@ -51,7 +57,7 @@ func (h *Handler) GetAPIKeyUsage(c *gin.Context) {
 	}
 
 	now := time.Now()
-	out := make(map[string]map[string][]coreauth.RecentRequestBucket)
+	out := make(map[string]map[string]apiKeyUsageEntry)
 	for _, auth := range manager.List() {
 		if auth == nil {
 			continue
@@ -80,14 +86,21 @@ func (h *Handler) GetAPIKeyUsage(c *gin.Context) {
 		recent := auth.RecentRequestsSnapshot(now)
 		providerBucket, ok := out[provider]
 		if !ok {
-			providerBucket = make(map[string][]coreauth.RecentRequestBucket)
+			providerBucket = make(map[string]apiKeyUsageEntry)
 			out[provider] = providerBucket
 		}
 		if existing, exists := providerBucket[compositeKey]; exists {
-			providerBucket[compositeKey] = mergeRecentRequestBuckets(existing, recent)
+			existing.Success += auth.Success
+			existing.Failed += auth.Failed
+			existing.RecentRequests = mergeRecentRequestBuckets(existing.RecentRequests, recent)
+			providerBucket[compositeKey] = existing
 			continue
 		}
-		providerBucket[compositeKey] = recent
+		providerBucket[compositeKey] = apiKeyUsageEntry{
+			Success:        auth.Success,
+			Failed:         auth.Failed,
+			RecentRequests: recent,
+		}
 	}
 
 	c.JSON(http.StatusOK, out)

internal/api/handlers/management/api_key_usage_test.go

@@ -64,25 +64,31 @@ func TestGetAPIKeyUsage_GroupsByProviderAndAPIKey(t *testing.T) {
 		t.Fatalf("status = %d, want %d body=%s", rec.Code, http.StatusOK, rec.Body.String())
 	}
 
-	var payload map[string]map[string][]coreauth.RecentRequestBucket
+	var payload map[string]map[string]apiKeyUsageEntry
 	if err := json.Unmarshal(rec.Body.Bytes(), &payload); err != nil {
 		t.Fatalf("decode payload: %v", err)
 	}
 
-	codexBuckets := payload["codex"]["https://codex.example.com|codex-key"]
-	if len(codexBuckets) != 20 {
-		t.Fatalf("codex buckets len = %d, want 20", len(codexBuckets))
+	codexEntry := payload["codex"]["https://codex.example.com|codex-key"]
+	if codexEntry.Success != 1 || codexEntry.Failed != 1 {
+		t.Fatalf("codex totals = %d/%d, want 1/1", codexEntry.Success, codexEntry.Failed)
 	}
-	codexSuccess, codexFailed := sumRecentRequestBuckets(codexBuckets)
+	if len(codexEntry.RecentRequests) != 20 {
+		t.Fatalf("codex buckets len = %d, want 20", len(codexEntry.RecentRequests))
+	}
+	codexSuccess, codexFailed := sumRecentRequestBuckets(codexEntry.RecentRequests)
 	if codexSuccess != 1 || codexFailed != 1 {
 		t.Fatalf("codex totals = %d/%d, want 1/1", codexSuccess, codexFailed)
 	}
 
-	claudeBuckets := payload["claude"]["https://claude.example.com|claude-key"]
-	if len(claudeBuckets) != 20 {
-		t.Fatalf("claude buckets len = %d, want 20", len(claudeBuckets))
+	claudeEntry := payload["claude"]["https://claude.example.com|claude-key"]
+	if claudeEntry.Success != 1 || claudeEntry.Failed != 0 {
+		t.Fatalf("claude totals = %d/%d, want 1/0", claudeEntry.Success, claudeEntry.Failed)
 	}
-	claudeSuccess, claudeFailed := sumRecentRequestBuckets(claudeBuckets)
+	if len(claudeEntry.RecentRequests) != 20 {
+		t.Fatalf("claude buckets len = %d, want 20", len(claudeEntry.RecentRequests))
+	}
+	claudeSuccess, claudeFailed := sumRecentRequestBuckets(claudeEntry.RecentRequests)
 	if claudeSuccess != 1 || claudeFailed != 0 {
 		t.Fatalf("claude totals = %d/%d, want 1/0", claudeSuccess, claudeFailed)
 	}

internal/api/handlers/management/auth_files.go

@@ -388,6 +388,8 @@ func (h *Handler) buildAuthFileEntry(auth *coreauth.Auth) gin.H {
 		"source":         "memory",
 		"size":           int64(0),
 	}
+	entry["success"] = auth.Success
+	entry["failed"] = auth.Failed
 	entry["recent_requests"] = auth.RecentRequestsSnapshot(time.Now())
 	if email := authEmail(auth); email != "" {
 		entry["email"] = email

internal/api/handlers/management/auth_files_recent_requests_test.go

@@ -62,6 +62,13 @@ func TestListAuthFiles_IncludesRecentRequestsBuckets(t *testing.T) {
 		t.Fatalf("expected file entry object, got %#v", filesRaw[0])
 	}
 
+	if _, ok := fileEntry["success"].(float64); !ok {
+		t.Fatalf("expected success number, got %#v", fileEntry["success"])
+	}
+	if _, ok := fileEntry["failed"].(float64); !ok {
+		t.Fatalf("expected failed number, got %#v", fileEntry["failed"])
+	}
+
 	recentRaw, ok := fileEntry["recent_requests"].([]any)
 	if !ok {
 		t.Fatalf("expected recent_requests array, got %#v", fileEntry["recent_requests"])