fix(core): 测试清单 行4-15 — 记住我7天/工作台布局/商品创建选择弹窗/上传图持久化/清空筛选

- 记住我7天:勾选才持久化token+预填用户名,7天过期强制重登(localStorage vs sessionStorage)
- 工作台:最近项目进度/状态列对齐、快捷&提示卡片圆角边框、余额按钮金额左对齐
- 商品创建成功改为复用弹窗,选择 继续创建/去新建项目;主图随创建上传持久化
- 商品卡显示真实主图、点视频进详情视频项目tab
- 商品库/视频项目补 清空筛选 按钮

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

core/frontend/src/routes/projects.tsx

@@ -561,6 +561,11 @@ export function ProjectsPage({ products, projects, navigate, openPipeline, onDel
             ))}
           </div>
         </div>
+        {(query || catFilter || sourceFilter !== "all" || timeFilter !== "all" || tab !== "all") && (
+          <button className="chip chip-clear" type="button" onClick={() => { setQuery(""); setCatFilter(""); setSourceFilter("all"); setTimeFilter("all"); setTab("all"); setOpenChip(""); }}>
+            <svg viewBox="0 0 16 16" fill="none" stroke="currentColor" strokeWidth="1.6" strokeLinecap="round"><path d="M4 4l8 8M12 4l-8 8" /></svg> 清空筛选
+          </button>
+        )}
         <span className="spacer"></span>
         <div className="view-toggle">
           <button className={view === "grid" ? "active" : ""} type="button" data-view="grid" onClick={() => setView("grid")}>