fix(report): 报告源/产物落 MinIO,去掉 gateway↔mcp-go 本地盘耦合

多机/容器化第一时间断裂的隐患(ARCHITECTURE_REVIEW §7 #1):此前报告
源(reportStore)与 .docx 产物(reportExport/reportRender)都写 mcp-go
本地 SUNDYNIX_REPORTS_DIR,gateway 再按同一路径 c.File 回流——mcp-go
与 gateway 不共享磁盘即断。

- blob 包从 gateway/internal 提到 sundynix-shared/blob,gateway 与 mcp-go
  共用同一 MinIO;新增 PutBytes/GetBytes 走二进制(.docx)。
- mcp-go 注入 blob:report 源/产物优先 Put 到对象存储(键 reports/<id>.{json,docx}),
  导出结果返回 minio://<key>;MinIO 未就绪回退本地盘(单机降级,getSource 兼容旧本地报告)。
- gateway ExportReport 识别 minio:// → GetBytes 流式下载,否则 c.File 本地降级。
- 测试:mcp 本地回落往返单测 + shared/blob 真 MinIO 二进制往返(BLOB_TEST_ENDPOINT 门控)。
  四模块 build 绿,受影响测试全过。
- 附带:go mod tidy 引入 genproto 拆包冲突,四模块统一钉单体 genproto 新版解决
  (注:勿 go work sync,会剪掉 indirect require 回落旧版重现冲突)。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

sundynix-gateway/internal/handler/kb.go

@@ -18,7 +18,7 @@ import (
 
 	"github.com/gin-gonic/gin"
 
-	"github.com/sundynix/sundynix-gateway/internal/blob"
+	"github.com/sundynix/sundynix-shared/blob"
 	"github.com/sundynix/sundynix-gateway/internal/nats"
 	"github.com/sundynix/sundynix-gateway/internal/store"
 	"github.com/sundynix/sundynix-shared/contract"

sundynix-gateway/internal/handler/report.go

@@ -5,6 +5,7 @@ import (
 	"encoding/hex"
 	"encoding/json"
 	"net/http"
+	"strings"
 
 	"github.com/gin-gonic/gin"
 
@@ -72,10 +73,25 @@ func (h *Handler) ExportReport(c *gin.Context) {
 		c.Header("Content-Disposition", `attachment; filename="`+id+`.md"`)
 		c.Header("Content-Type", "text/markdown; charset=utf-8")
 		c.String(http.StatusOK, res.Content)
-	default: // docx：res.Content 为 mcp-go 落盘的 .docx 路径
+	default: // docx：res.Content 为 minio://<key>（对象存储，跨机可取）或本地路径（单机降级）
+		const docxMime = "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
 		c.Header("Content-Disposition", `attachment; filename="`+id+`.docx"`)
-		c.Header("Content-Type", "application/vnd.openxmlformats-officedocument.wordprocessingml.document")
-		c.File(res.Content)
+		c.Header("Content-Type", docxMime)
+		if key, ok := strings.CutPrefix(res.Content, contract.BlobScheme); ok {
+			// 对象存储：从 MinIO 流式取回，不依赖 gateway 与 mcp-go 共享本地盘。
+			if h.blob == nil || !h.blob.Ready() {
+				c.JSON(http.StatusBadGateway, gin.H{"error": "对象存储不可用，无法下载报告"})
+				return
+			}
+			data, gerr := h.blob.GetBytes(c.Request.Context(), key)
+			if gerr != nil {
+				c.JSON(http.StatusNotFound, gin.H{"error": "报告产物已过期或不存在"})
+				return
+			}
+			c.Data(http.StatusOK, docxMime, data)
+			return
+		}
+		c.File(res.Content) // 本地路径：单机/共享卷降级
 	}
 }
 

sundynix-gateway/internal/handler/task_handler.go

@@ -16,7 +16,7 @@ import (
 	"github.com/gin-contrib/sse"
 	"github.com/gin-gonic/gin"
 
-	"github.com/sundynix/sundynix-gateway/internal/blob"
+	"github.com/sundynix/sundynix-shared/blob"
 	"github.com/sundynix/sundynix-gateway/internal/dsl"
 	"github.com/sundynix/sundynix-gateway/internal/nats"
 	"github.com/sundynix/sundynix-gateway/internal/payment"