chore(收尾): mock 数据同步 B2 引用模型-附件 refType 场景引用/page unusedCount/upload scene 白名单

mock/index.ts

@@ -724,12 +724,12 @@ async function handleApi(req: IncomingMessage, res: ServerResponse, path: string
         const page = num(q(req, "page"), 1)!;
         const pageSize = num(q(req, "pageSize"), 10)!;
         let rows = db.attachments.filter(t => t.siteId === siteId);
-        if (orphanOnly) rows = rows.filter(t => !t.articleId);
+        if (orphanOnly) rows = rows.filter(t => !t.articleId && !t.refType); // B2 未使用语义
         const total = rows.length;
         const list = rows
             .slice((page - 1) * pageSize, page * pageSize)
             .map((t: MockAttachment) => ({ ...t, orphan: !t.articleId }));
-        sendJson(res, ok({ total, list, orphanCount: db.attachments.filter(t => t.siteId === siteId && !t.articleId).length }));
+        sendJson(res, ok({ total, list, unusedCount: db.attachments.filter(t => t.siteId === siteId && !t.articleId && !t.refType).length })); // B2：orphanCount→unusedCount
         return true;
     }
     if (method === "POST" && path === "/api/attachment/upload") {
@@ -744,10 +744,14 @@ async function handleApi(req: IncomingMessage, res: ServerResponse, path: string
         db.files.set(url, { buffer: file.buffer, mime: file.mime, name: safeName });
         const siteId = num(q(req, "siteId"), 0) ?? num(body.toString("latin1").match(/name="siteId"\r\n\r\n(\d+)/)?.[1], 0)!;
         const articleId = num(q(req, "articleId")) ?? num(body.toString("latin1").match(/name="articleId"\r\n\r\n(\d+)/)?.[1], undefined);
+        // B2：scene 初步标记（banner/link/site 白名单，其余忽略）
+        const sceneRaw = q(req, "scene");
+        const scene = ["banner", "link", "site"].includes(sceneRaw) ? sceneRaw : undefined;
         const row: MockAttachment = {
             id: nextId(db.attachments),
             siteId,
             articleId,
+            refType: scene,
             fileName: safeName,
             url,
             fileSize: file.buffer.length,
@@ -755,7 +759,7 @@ async function handleApi(req: IncomingMessage, res: ServerResponse, path: string
             createTime: now(),
         };
         db.attachments.push(row);
-        sendJson(res, ok({ ...row, orphan: !row.articleId }));
+        sendJson(res, ok({ ...row, orphan: !row.articleId && !row.refType }));
         return true;
     }
     if (method === "POST" && path === "/api/attachment/delete") {