feat: enhance superadmin dashboard overview

backend/docs/docs.go

@@ -167,6 +167,29 @@ const docTemplate = `{
                 }
             }
         },
+        "/super/v1/contents/statistics": {
+            "get": {
+                "description": "Content statistics",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Content"
+                ],
+                "summary": "Content statistics",
+                "responses": {
+                    "200": {
+                        "description": "OK",
+                        "schema": {
+                            "$ref": "#/definitions/dto.SuperContentStatisticsResponse"
+                        }
+                    }
+                }
+            }
+        },
         "/super/v1/contents/{id}/review": {
             "post": {
                 "description": "Review content",
@@ -6374,6 +6397,22 @@ const docTemplate = `{
                 }
             }
         },
+        "dto.SuperContentStatisticsResponse": {
+            "type": "object",
+            "properties": {
+                "total_count": {
+                    "description": "TotalCount 内容总量。",
+                    "type": "integer"
+                },
+                "trend": {
+                    "description": "Trend 按天新增内容趋势。",
+                    "type": "array",
+                    "items": {
+                        "$ref": "#/definitions/dto.SuperContentTrendItem"
+                    }
+                }
+            }
+        },
         "dto.SuperContentTenantLite": {
             "type": "object",
             "properties": {
@@ -6391,6 +6430,19 @@ const docTemplate = `{
                 }
             }
         },
+        "dto.SuperContentTrendItem": {
+            "type": "object",
+            "properties": {
+                "created_count": {
+                    "description": "CreatedCount 当日新增内容数量。",
+                    "type": "integer"
+                },
+                "date": {
+                    "description": "Date 日期（YYYY-MM-DD）。",
+                    "type": "string"
+                }
+            }
+        },
         "dto.SuperCouponGrantItem": {
             "type": "object",
             "properties": {