feat(core/frontend): restore ModelPhotoDemoPage A/B static showcase to baselines (§1 last item)

ModelPhotoDemoPage variant A/B pixel-restored to model-photo-demo-a/b.html (product rail + model grid +
batch result cards / task-stream layout). Sibling AssetFactoryPage/ImageWorkbenchPage untouched.
+ QA: shot-aitools.mjs / shot-pipeline.mjs. verified: tsc --noEmit clean; A/B + model-photo screenshots match.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

core/frontend/src/ai-tools-page.css

@@ -978,3 +978,518 @@
 .image-workbench .ic-param-menu .mi.selected { color: var(--heat); font-weight: 600; }
 .image-workbench .ic-param-menu .mi .mi-check { margin-left: auto; opacity: 0; color: var(--heat); }
 .image-workbench .ic-param-menu .mi.selected .mi-check { opacity: 1; }
+
+/* ============================================================
+   C · 模特图方案对比 Demo(.model-demo · 纯静态展示)
+   基线:public/exact/model-photo-demo-a.html(参数面板 + 结果双栏)
+        public/exact/model-photo-demo-b.html(任务流 + 底部 fixed 参数栏)
+   逐字对齐 .content 级正文。全局 token + 共享 .pill;.content padding 抵消同 .image-workbench。
+   ============================================================ */
+.model-demo {
+  /* 抵消 .content 的 36/48/60 padding,贴边铺满(同 .image-workbench 思路) */
+  margin: -36px -48px -60px;
+  height: calc(100vh - 65px);
+  display: flex; flex-direction: column;
+  background: var(--background-base);
+  overflow: hidden;
+}
+
+/* 顶部 demo 提示条(两版共用) */
+.model-demo .dm-banner {
+  flex-shrink: 0;
+  margin: 12px 28px 0;
+  padding: 8px 12px;
+  background: var(--heat-12);
+  border: 1px dashed var(--heat-20);
+  border-radius: var(--r-sm);
+  font-size: 12px; color: var(--accent-black);
+  font-family: var(--font-mono); letter-spacing: .02em; line-height: 1.5;
+}
+.model-demo .dm-banner b { color: var(--heat); }
+
+/* 两栏:左侧栏 260px + 主区 */
+.model-demo .dm-grid {
+  flex: 1; min-height: 0;
+  display: grid;
+  grid-template-columns: 260px minmax(0, 1fr);
+}
+@media (max-width: 1100px) {
+  .model-demo .dm-grid { grid-template-columns: 220px minmax(0, 1fr); }
+}
+
+/* ── 左侧栏 · 商品空间(两版共用) ── */
+.model-demo .dm-side {
+  border-right: 1px solid var(--border-faint);
+  background: var(--surface);
+  display: flex; flex-direction: column;
+  min-height: 0;
+}
+.model-demo .dm-side-h { padding: 14px 14px 10px; flex-shrink: 0; }
+.model-demo .dm-side-h .ti-row { display: flex; align-items: center; margin-bottom: 10px; }
+.model-demo .dm-side-h .ti {
+  font-size: 11px; font-family: var(--font-mono);
+  color: var(--black-alpha-48); letter-spacing: .08em; text-transform: uppercase;
+}
+.model-demo .dm-side-h .add {
+  margin-left: auto;
+  width: 22px; height: 22px;
+  display: grid; place-items: center;
+  background: var(--heat-12); color: var(--heat);
+  border: 0; border-radius: var(--r-sm);
+  cursor: pointer;
+}
+.model-demo .dm-side-h .add svg { width: 11px; height: 11px; }
+
+.model-demo .dm-search {
+  display: flex; align-items: center; gap: 8px;
+  height: 32px; padding: 0 10px;
+  background: var(--background-lighter);
+  border: 1px solid var(--border-faint);
+  border-radius: var(--r-sm);
+  transition: border-color var(--t-base), background var(--t-base);
+}
+.model-demo .dm-search:focus-within { border-color: var(--heat-40); background: var(--surface); }
+.model-demo .dm-search svg { width: 13px; height: 13px; color: var(--black-alpha-48); flex-shrink: 0; }
+.model-demo .dm-search input {
+  flex: 1; min-width: 0; height: 100%;
+  border: 0; outline: 0; background: transparent;
+  font-size: 12.5px; color: var(--accent-black); font-family: inherit;
+}
+.model-demo .dm-search input::placeholder { color: var(--black-alpha-48); }
+
+.model-demo .dm-prod-list {
+  flex: 1; min-height: 0;
+  overflow-y: auto;
+  padding: 4px 10px 10px;
+  display: flex; flex-direction: column; gap: 4px;
+}
+.model-demo .dm-prod {
+  display: flex; align-items: center; gap: 10px;
+  padding: 8px;
+  border: 1px solid transparent;
+  border-radius: var(--r-sm);
+  cursor: pointer; text-align: left;
+  background: transparent; font-family: inherit;
+  transition: background var(--t-base), border-color var(--t-base);
+}
+.model-demo .dm-prod:hover { background: var(--background-lighter); }
+.model-demo .dm-prod.active { background: var(--heat-12); border-color: var(--heat-20); }
+.model-demo .dm-prod .thumb {
+  flex-shrink: 0;
+  width: 40px; height: 40px;
+  border: 1px solid var(--border-faint);
+  border-radius: var(--r-sm);
+  overflow: hidden;
+  background: repeating-linear-gradient(135deg, transparent 0 4px, var(--black-alpha-4) 4px 5px);
+  display: grid; place-items: center;
+  font-family: var(--font-mono); font-size: 9px; color: var(--black-alpha-32);
+}
+.model-demo .dm-prod.active .thumb { border-color: var(--heat); }
+.model-demo .dm-prod .body { flex: 1; min-width: 0; }
+.model-demo .dm-prod .nm {
+  font-size: 12.5px; color: var(--accent-black); font-weight: 500; line-height: 1.3;
+  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
+}
+.model-demo .dm-prod.active .nm { color: var(--heat); font-weight: 600; }
+.model-demo .dm-prod .sub {
+  margin-top: 2px;
+  font-family: var(--font-mono); font-size: 10px;
+  color: var(--black-alpha-48); letter-spacing: .02em;
+  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
+}
+
+.model-demo .dm-all {
+  flex-shrink: 0;
+  margin: 0 10px 12px;
+  padding: 10px 12px;
+  background: var(--background-lighter);
+  border: 1px dashed var(--border-faint);
+  border-radius: var(--r-sm);
+  color: var(--black-alpha-72);
+  font-size: 12px; font-family: inherit; cursor: pointer;
+  display: flex; align-items: center; gap: 6px;
+  transition: border-color var(--t-base), color var(--t-base), background var(--t-base);
+}
+.model-demo .dm-all:hover { border-color: var(--heat); color: var(--heat); background: var(--heat-12); }
+.model-demo .dm-all .ct {
+  color: var(--black-alpha-48);
+  font-family: var(--font-mono); font-size: 10.5px;
+  margin-left: auto;
+}
+.model-demo .dm-all svg { width: 12px; height: 12px; }
+.model-demo .dm-all .arrow { margin-left: 4px; }
+
+/* 主区 · 返回 pill(基线无,挂主区头部,保留 onBack) */
+.model-demo .dm-back {
+  flex-shrink: 0;
+  display: inline-flex; align-items: center; gap: 6px;
+  height: 30px; padding: 0 12px 0 10px;
+  background: var(--surface);
+  border: 1px solid var(--border-faint);
+  border-radius: var(--r-pill);
+  color: var(--accent-black);
+  font-size: 12.5px; font-weight: 500; font-family: inherit;
+  cursor: pointer;
+  transition: background var(--t-base), border-color var(--t-base), color var(--t-base);
+}
+.model-demo .dm-back:hover { background: var(--black-alpha-4); border-color: var(--black-alpha-24); }
+.model-demo .dm-back svg { width: 14px; height: 14px; }
+
+/* ── 主区(两版共用骨架) ── */
+.model-demo .dm-main {
+  display: flex; flex-direction: column;
+  min-height: 0; overflow: hidden;
+  position: relative;
+}
+
+/* 批次卡(两版共用) */
+.model-demo .dm-batch {
+  background: var(--surface);
+  border: 1px solid var(--border-faint);
+  border-radius: var(--r-md);
+  padding: 14px 16px;
+  margin-bottom: 14px;
+}
+.model-demo .dm-batch-h .pic {
+  flex-shrink: 0;
+  width: 28px; height: 28px;
+  background: var(--background-lighter);
+  border: 1px solid var(--border-faint);
+  border-radius: var(--r-sm);
+  display: grid; place-items: center;
+  color: var(--heat);
+  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
+}
+.model-demo .dm-batch-h .meta { flex: 1; min-width: 0; }
+.model-demo .dm-batch-h .nm { font-size: 13px; font-weight: 600; color: var(--accent-black); }
+.model-demo .dm-batch-h .info { margin-top: 2px; font-family: var(--font-mono); font-size: 10.5px; color: var(--black-alpha-48); letter-spacing: .02em; }
+.model-demo .dm-batch-h .info .sep { color: var(--black-alpha-24); }
+.model-demo .dm-batch-h .ops { display: flex; gap: 4px; }
+.model-demo .dm-batch-h .ops button {
+  width: 28px; height: 28px;
+  background: var(--surface);
+  border: 1px solid var(--border-faint);
+  border-radius: var(--r-sm);
+  color: var(--black-alpha-56); cursor: pointer;
+  display: grid; place-items: center;
+  transition: border-color var(--t-base), color var(--t-base);
+}
+.model-demo .dm-batch-h .ops button:hover { border-color: var(--heat-20); color: var(--heat); }
+.model-demo .dm-batch-h .ops button svg { width: 13px; height: 13px; }
+
+.model-demo .dm-batch-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
+@media (max-width: 1400px) { .model-demo .dm-batch-grid { grid-template-columns: repeat(3, 1fr); } }
+.model-demo .dm-cell {
+  aspect-ratio: 3 / 4;
+  background: var(--background-lighter);
+  border: 1px solid var(--border-faint);
+  border-radius: var(--r-sm);
+  overflow: hidden; position: relative; cursor: pointer;
+}
+.model-demo .dm-cell .ph {
+  position: absolute; inset: 0;
+  display: grid; place-items: center;
+  font-family: var(--font-mono); font-size: 11px; color: var(--black-alpha-32);
+  background: repeating-linear-gradient(135deg, transparent 0 6px, var(--black-alpha-3) 6px 7px);
+}
+.model-demo .dm-cell .tag {
+  position: absolute; top: 6px; left: 6px;
+  padding: 2px 6px;
+  background: var(--accent-black);
+  color: var(--accent-white);
+  border-radius: var(--r-sm);
+  font-size: 10px; font-weight: 500;
+}
+
+/* ════════════════════════════════════════════════
+   方案 A · 参数面板 + 结果双栏
+   ════════════════════════════════════════════════ */
+.model-demo.dm-a .dm-main-h {
+  flex-shrink: 0;
+  display: flex; align-items: center; gap: 14px;
+  padding: 14px 28px;
+  border-bottom: 1px solid var(--border-faint);
+  background: var(--surface);
+}
+.model-demo.dm-a .dm-main-h .cur { min-width: 0; }
+.model-demo.dm-a .dm-main-h .crumb {
+  font-family: var(--font-mono); font-size: 10.5px;
+  color: var(--black-alpha-48); letter-spacing: .04em;
+}
+.model-demo.dm-a .dm-main-h h2 {
+  font-size: 20px; font-weight: 600;
+  letter-spacing: -.015em; color: var(--accent-black);
+}
+.model-demo.dm-a .dm-main-h .stats {
+  margin-left: auto;
+  display: flex; gap: 6px;
+  font-family: var(--font-mono); font-size: 11px;
+  color: var(--black-alpha-48); letter-spacing: .02em;
+}
+.model-demo.dm-a .dm-main-h .stats b { color: var(--accent-black); font-weight: 600; }
+.model-demo.dm-a .dm-main-h .stats .sep { color: var(--black-alpha-24); }
+
+.model-demo.dm-a .dm-body {
+  flex: 1; min-height: 0;
+  display: grid; grid-template-columns: 320px minmax(0, 1fr);
+}
+@media (max-width: 1100px) { .model-demo.dm-a .dm-body { grid-template-columns: 280px minmax(0, 1fr); } }
+
+/* 左侧参数面板 */
+.model-demo.dm-a .dm-form {
+  border-right: 1px solid var(--border-faint);
+  background: var(--surface);
+  display: flex; flex-direction: column;
+  min-height: 0;
+}
+.model-demo.dm-a .dm-form-scroll { flex: 1; min-height: 0; overflow-y: auto; padding: 16px 18px; }
+.model-demo.dm-a .dm-field { margin-bottom: 16px; }
+.model-demo.dm-a .dm-field:last-child { margin-bottom: 0; }
+.model-demo.dm-a .dm-field-h { font-size: 12px; font-weight: 600; color: var(--accent-black); margin-bottom: 8px; }
+.model-demo.dm-a .dm-field-h .opt { font-weight: 400; font-size: 11px; color: var(--black-alpha-48); margin-left: 4px; }
+
+.model-demo.dm-a .dm-models { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
+.model-demo.dm-a .dm-model {
+  aspect-ratio: 3 / 4;
+  border: 1px solid var(--border-faint);
+  background: var(--background-lighter);
+  border-radius: var(--r-sm);
+  position: relative; cursor: pointer; overflow: hidden;
+  transition: border-color var(--t-base);
+}
+.model-demo.dm-a .dm-model:hover { border-color: var(--black-alpha-32); }
+.model-demo.dm-a .dm-model.selected { border-color: var(--heat); border-width: 2px; }
+.model-demo.dm-a .dm-model .ph {
+  position: absolute; inset: 0;
+  display: grid; place-items: center;
+  font-family: var(--font-mono); font-size: 10px; color: var(--black-alpha-32);
+  background: repeating-linear-gradient(135deg, transparent 0 6px, var(--black-alpha-3) 6px 7px);
+}
+.model-demo.dm-a .dm-model .nm {
+  position: absolute; bottom: 0; left: 0; right: 0;
+  padding: 4px 6px;
+  background: linear-gradient(transparent, var(--black-alpha-48));
+  font-size: 10px; color: var(--accent-white); font-weight: 500;
+}
+.model-demo.dm-a .dm-model.selected::after {
+  content: ''; position: absolute; top: 4px; right: 4px;
+  width: 14px; height: 14px;
+  background: var(--heat) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") no-repeat center / 9px;
+  border-radius: 50%;
+}
+.model-demo.dm-a .dm-model.add {
+  border-style: dashed;
+  display: flex; align-items: center; justify-content: center;
+  color: var(--black-alpha-48);
+}
+
+.model-demo.dm-a .dm-chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
+.model-demo.dm-a .dm-chip {
+  display: inline-flex; align-items: center;
+  height: 28px; padding: 0 11px;
+  background: var(--surface);
+  border: 1px solid var(--border-faint);
+  border-radius: var(--r-sm);
+  font-size: 12px; color: var(--black-alpha-72);
+  font-family: inherit; cursor: pointer;
+  transition: border-color var(--t-base), color var(--t-base), background var(--t-base);
+}
+.model-demo.dm-a .dm-chip:hover { border-color: var(--black-alpha-32); color: var(--accent-black); }
+.model-demo.dm-a .dm-chip.active { background: var(--heat-12); color: var(--heat); border-color: var(--heat-20); font-weight: 600; }
+
+.model-demo.dm-a .dm-textarea {
+  width: 100%; min-height: 60px;
+  padding: 8px 10px;
+  background: var(--background-lighter);
+  border: 1px solid var(--black-alpha-12);
+  border-radius: var(--r-sm);
+  font-family: inherit; font-size: 12.5px;
+  color: var(--accent-black);
+  outline: none; resize: vertical;
+}
+.model-demo.dm-a .dm-textarea::placeholder { color: var(--black-alpha-48); }
+.model-demo.dm-a .dm-textarea:focus { border-color: var(--heat-40); background: var(--surface); }
+
+.model-demo.dm-a .dm-form-cta {
+  flex-shrink: 0;
+  padding: 14px 18px;
+  border-top: 1px solid var(--border-faint);
+  background: var(--surface);
+}
+.model-demo.dm-a .dm-cost {
+  display: flex; align-items: center; justify-content: space-between;
+  margin-bottom: 10px;
+  font-family: var(--font-mono); font-size: 11px;
+  color: var(--black-alpha-48); letter-spacing: .02em;
+}
+.model-demo.dm-a .dm-cost .v { color: var(--accent-black); font-weight: 600; }
+.model-demo.dm-a .dm-gen {
+  width: 100%; height: 42px;
+  background: var(--heat); color: var(--accent-white);
+  border: 1px solid var(--heat); border-radius: var(--r-md);
+  font-size: 14px; font-weight: 600; font-family: inherit;
+  cursor: pointer;
+  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
+  box-shadow: var(--shadow-cta);
+}
+.model-demo.dm-a .dm-gen svg { width: 15px; height: 15px; }
+
+/* 右侧结果区 */
+.model-demo.dm-a .dm-result {
+  background: var(--background-base);
+  min-height: 0; overflow-y: auto;
+  padding: 22px 24px;
+}
+.model-demo.dm-a .dm-result-h { display: flex; align-items: baseline; gap: 10px; margin-bottom: 14px; }
+.model-demo.dm-a .dm-result-h .ti { font-size: 15px; font-weight: 600; color: var(--accent-black); }
+.model-demo.dm-a .dm-result-h .sub { font-family: var(--font-mono); font-size: 10.5px; color: var(--black-alpha-48); letter-spacing: .02em; }
+.model-demo.dm-a .dm-batch-h {
+  display: flex; align-items: center; gap: 10px;
+  margin-bottom: 12px; padding-bottom: 10px;
+  border-bottom: 1px solid var(--border-faint);
+}
+
+/* ════════════════════════════════════════════════
+   方案 B · v2:任务流主区 + 底部 fixed 参数栏
+   ════════════════════════════════════════════════ */
+.model-demo.dm-b .dm-main-h {
+  flex-shrink: 0;
+  padding: 16px 28px 12px;
+  border-bottom: 1px solid var(--border-faint);
+  background: var(--surface);
+}
+.model-demo.dm-b .dm-main-h .crumb {
+  font-family: var(--font-mono); font-size: 10.5px;
+  color: var(--black-alpha-48); letter-spacing: .04em; margin-bottom: 4px;
+}
+.model-demo.dm-b .dm-main-h .title-row { display: flex; align-items: center; gap: 14px; }
+.model-demo.dm-b .dm-main-h h2 {
+  font-size: 22px; font-weight: 600;
+  letter-spacing: -.015em; color: var(--accent-black);
+}
+.model-demo.dm-b .dm-main-h .title-row .dm-back { margin-left: auto; }
+.model-demo.dm-b .dm-main-h .row { display: flex; align-items: center; gap: 16px; margin-top: 6px; }
+.model-demo.dm-b .dm-main-h .stats {
+  font-family: var(--font-mono); font-size: 11px;
+  color: var(--black-alpha-48); letter-spacing: .02em;
+  display: flex; gap: 4px;
+}
+.model-demo.dm-b .dm-main-h .stats b { color: var(--accent-black); font-weight: 600; }
+.model-demo.dm-b .dm-main-h .stats .sep { color: var(--black-alpha-24); }
+.model-demo.dm-b .dm-main-h .spacer { flex: 1; }
+
+.model-demo.dm-b .dm-tb { display: flex; gap: 8px; align-items: center; }
+.model-demo.dm-b .dm-tb .icbtn {
+  width: 30px; height: 30px;
+  background: var(--surface);
+  border: 1px solid var(--border-faint);
+  border-radius: var(--r-sm);
+  color: var(--black-alpha-72);
+  cursor: pointer; display: grid; place-items: center;
+  transition: border-color var(--t-base), color var(--t-base);
+}
+.model-demo.dm-b .dm-tb .icbtn:hover { border-color: var(--heat-20); color: var(--heat); }
+.model-demo.dm-b .dm-tb .icbtn svg { width: 13px; height: 13px; }
+.model-demo.dm-b .dm-tb .chip {
+  display: inline-flex; align-items: center; gap: 6px;
+  height: 30px; padding: 0 10px;
+  background: var(--surface);
+  border: 1px solid var(--border-faint);
+  border-radius: var(--r-sm);
+  font-size: 12px; color: var(--black-alpha-72);
+  font-family: inherit; cursor: pointer;
+  transition: border-color var(--t-base), color var(--t-base);
+}
+.model-demo.dm-b .dm-tb .chip:hover { border-color: var(--heat-20); color: var(--heat); }
+.model-demo.dm-b .dm-tb .chip svg { width: 10px; height: 10px; opacity: .6; }
+
+.model-demo.dm-b .dm-stream {
+  flex: 1; min-height: 0;
+  overflow-y: auto;
+  padding: 22px 28px 200px;
+  background: var(--background-base);
+}
+.model-demo.dm-b .dm-day-h {
+  display: flex; align-items: baseline; gap: 8px;
+  margin: 6px 0 10px;
+  font-family: var(--font-mono); font-size: 10.5px;
+  color: var(--black-alpha-48); letter-spacing: .06em; text-transform: uppercase;
+}
+.model-demo.dm-b .dm-day-h::before {
+  content: ''; width: 14px; height: 1px;
+  background: var(--black-alpha-24);
+  display: inline-block; margin-right: 2px;
+}
+.model-demo.dm-b .dm-day-h .ct {
+  color: var(--black-alpha-72); font-weight: 500;
+  margin-left: auto; text-transform: none; letter-spacing: 0;
+}
+
+.model-demo.dm-b .dm-batch-h { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
+.model-demo.dm-b .dm-batch-h .nm { font-size: 13.5px; }
+.model-demo.dm-b .dm-batch-h .info { display: flex; flex-wrap: wrap; gap: 4px; }
+/* 状态 pill 紧贴标题右侧(局部尺寸变体 · 不改全局 .pill) */
+.model-demo.dm-b .stat-pill {
+  margin-left: 8px;
+  padding: 2px 7px;
+  font-size: 10px;
+}
+.model-demo.dm-b .stat-pill .dot { width: 4px; height: 4px; }
+
+.model-demo.dm-b .dm-cell.gen .ph { animation: dm-pulse 1.4s ease-in-out infinite; }
+@keyframes dm-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .55; } }
+.model-demo.dm-b .dm-cell.err { border-color: var(--accent-crimson); }
+.model-demo.dm-b .dm-cell.err .ph { color: var(--accent-crimson); background: var(--crimson-bg); }
+
+/* 底部 fixed 参数面板 */
+.model-demo.dm-b .dm-param-wrap {
+  position: absolute; left: 0; right: 0; bottom: 0;
+  padding: 14px 28px 22px;
+  background: linear-gradient(to bottom, transparent 0, var(--background-base) 24px);
+  z-index: 5;
+}
+.model-demo.dm-b .dm-param {
+  max-width: 1180px; margin: 0 auto;
+  background: var(--surface);
+  border: 1px solid var(--border-faint);
+  border-radius: var(--r-md);
+  padding: 10px 14px;
+  display: flex; align-items: center; gap: 10px;
+  box-shadow: var(--shadow-floating);
+}
+.model-demo.dm-b .dm-param .pchip {
+  display: inline-flex; align-items: center; gap: 6px;
+  height: 30px; padding: 0 12px;
+  background: var(--background-lighter);
+  border: 1px solid transparent;
+  border-radius: var(--r-pill);
+  font-size: 12px; color: var(--black-alpha-72);
+  cursor: pointer; font-family: inherit;
+  transition: border-color var(--t-base), background var(--t-base), color var(--t-base);
+}
+.model-demo.dm-b .dm-param .pchip:hover { background: var(--surface); border-color: var(--border-faint); }
+.model-demo.dm-b .dm-param .pchip.active { background: var(--heat-12); color: var(--heat); }
+.model-demo.dm-b .dm-param .pchip svg { width: 10px; height: 10px; opacity: .6; }
+.model-demo.dm-b .dm-param .pchip .lbl-mono {
+  font-family: var(--font-mono); font-size: 10px;
+  color: var(--black-alpha-48); letter-spacing: .02em;
+}
+.model-demo.dm-b .dm-param .pchip.active .lbl-mono { color: var(--heat); }
+.model-demo.dm-b .dm-param .pchip .muted { color: var(--black-alpha-48); }
+.model-demo.dm-b .dm-param .spacer { flex: 1; }
+.model-demo.dm-b .dm-param .meta-right {
+  font-family: var(--font-mono); font-size: 10.5px;
+  color: var(--black-alpha-48); letter-spacing: .02em;
+  margin-right: 6px; text-align: right;
+}
+.model-demo.dm-b .dm-param .meta-right .v { color: var(--accent-black); font-weight: 600; }
+.model-demo.dm-b .dm-param .gen-btn {
+  height: 38px; padding: 0 20px;
+  background: var(--heat); color: var(--accent-white);
+  border: 0; border-radius: var(--r-md);
+  font-size: 13.5px; font-weight: 600; font-family: inherit;
+  cursor: pointer;
+  display: inline-flex; align-items: center; gap: 8px;
+  box-shadow: var(--shadow-cta);
+}
+.model-demo.dm-b .dm-param .gen-btn svg { width: 14px; height: 14px; }

core/frontend/src/routes/ai-tools.tsx

@@ -2,11 +2,13 @@ import { useEffect, useMemo, useState } from "react";
 import {
   ArrowLeft,
   ArrowRight,
+  Bookmark,
   Check,
   ChevronDown,
   Download,
   Grid2X2,
   ImagePlus,
+  LayoutGrid,
   List,
   MoreHorizontal,
   Plus,
@@ -14,7 +16,9 @@ import {
   RefreshCw,
   Search,
   Sparkles,
-  WandSparkles
+  Trash2,
+  WandSparkles,
+  X
 } from "lucide-react";
 import type { AITask, Asset, ModelConfig, Product } from "../types";
 import type { Page } from "./route-config";
@@ -845,6 +849,474 @@ function Pill({
   );
 }
 
+/* ════════════════════════════════════════════════
+   模特图方案对比 Demo(纯静态展示 · 像素还原)
+   variant="A" → public/exact/model-photo-demo-a.html
+   variant="B" → public/exact/model-photo-demo-b.html
+   左栏 = 商品空间(搜索 + 最近 6 条 + 全部入口),由真 products 填充,空则回退基线占位。
+   主区为静态方案展示(A:参数面板 + 结果双栏;B:任务流 + 底部 fixed 参数栏)。
+   ════════════════════════════════════════════════ */
+
+/* 基线左栏占位商品(无真 products 时兜底) */
+const DEMO_SIDE_PRODUCTS = [
+  { id: "d1", title: "透真补水面膜", category: "美妆个护", batches: 6 },
+  { id: "d2", title: "透真清透防晒霜", category: "美妆个护", batches: 3 },
+  { id: "d3", title: "南卡 Lite Pro 蓝牙耳机", category: "数码 3C", batches: 2 },
+  { id: "d4", title: "滋啦速食牛肉面", category: "食品饮料", batches: 1 },
+  { id: "d5", title: "三顿半同款冻干咖啡", category: "食品饮料", batches: 1 },
+  { id: "d6", title: "小熊 4L 可视空气炸锅", category: "家居家电", batches: 0 }
+];
+
 export function ModelPhotoDemoPage({ variant, products, onBack }: { variant: "A" | "B"; products: Product[]; onBack: () => void }) {
-  return <><div className="page-head"><div><h1>模特图方案 {variant}</h1><div className="sub"><span className="mono">// model-photo-demo-{variant.toLowerCase()}</span> · 原型对比页补齐</div></div><div className="actions"><button className="btn" type="button" onClick={onBack}><ArrowLeft size={13} />返回模特图</button></div></div><div className={`demo-layout demo-${variant.toLowerCase()}`}><aside className="tool-rail"><div className="rail-h">商品空间</div>{products.slice(0, 6).map((product) => <button className="rail-product" type="button" key={product.id}><div className="placeholder"><span className="ph-frame">{product.title.slice(0, 4)}</span></div><span>{product.title}</span></button>)}</aside><section className="pane"><div className="pane-h"><strong>方案 {variant}</strong><span className="spacer" /><span className="mono muted-2">DEMO</span></div><div className="result-board dense">{Array.from({ length: 6 }).map((_, index) => <div className="result-tile" key={index}><div className="placeholder"><span className="ph-frame">MODEL {index + 1}</span></div></div>)}</div></section></div></>;
+  // 左栏商品空间:优先真 products(最近 6 条),空则回退基线占位
+  const sideProducts =
+    products.length > 0
+      ? products.slice(0, 6).map((item, index) => ({
+          id: item.id,
+          title: item.title,
+          category: item.category || "未分类",
+          batches: DEMO_SIDE_PRODUCTS[index % DEMO_SIDE_PRODUCTS.length].batches
+        }))
+      : DEMO_SIDE_PRODUCTS;
+
+  const [activeId, setActiveId] = useState(sideProducts[0].id);
+  const active = sideProducts.find((item) => item.id === activeId) || sideProducts[0];
+  const totalCount = products.length > 0 ? products.length : 24;
+
+  // 共享左栏(两版一致)
+  const side = (
+    <aside className="dm-side">
+      <div className="dm-side-h">
+        <div className="ti-row">
+          <span className="ti">商品空间</span>
+          <button className="add" type="button" title="新建商品">
+            <Plus size={11} />
+          </button>
+        </div>
+        <div className="dm-search">
+          <Search size={13} />
+          <input type="text" placeholder="搜索商品 / 分类" />
+        </div>
+      </div>
+
+      <div className="dm-prod-list">
+        {sideProducts.map((item) => (
+          <button
+            type="button"
+            key={item.id}
+            className={`dm-prod ${item.id === active.id ? "active" : ""}`}
+            onClick={() => setActiveId(item.id)}
+          >
+            <div className="thumb">主图</div>
+            <div className="body">
+              <div className="nm">{item.title}</div>
+              <div className="sub">// {item.category} · {item.batches} 批</div>
+            </div>
+          </button>
+        ))}
+      </div>
+
+      <button className="dm-all" type="button">
+        <LayoutGrid size={12} />
+        全部商品
+        <span className="ct">{totalCount} 个</span>
+        <ArrowRight className="arrow" size={12} />
+      </button>
+    </aside>
+  );
+
+  // ── 返回(基线无,挂在主区头部,保留 onBack)──
+  const backBtn = (
+    <button className="dm-back" type="button" onClick={onBack}>
+      <ArrowLeft size={14} />
+      返回模特图
+    </button>
+  );
+
+  if (variant === "A") {
+    return (
+      <div className="model-demo dm-a">
+        <div className="dm-banner">
+          // DEMO · 方案 A · <b>商品 = 项目空间</b>。左栏仅商品空间:搜索 + 最近 6 条 + <b>全部商品</b>兜底入口;
+          历史任务已挪进主区。主区:模特卡 + 张数 + 比例 + 立即生成,生成结果自动绑定到当前商品。
+        </div>
+
+        <div className="dm-grid">
+          {side}
+
+          <section className="dm-main">
+            {/* 顶部 · 商品名 + 统计 */}
+            <div className="dm-main-h">
+              <div className="cur">
+                <div className="crumb">// 商品空间</div>
+                <h2>{active.title}</h2>
+              </div>
+              <div className="stats">
+                <span>本商品 <b>6</b> 批</span>
+                <span className="sep">·</span>
+                <span>累计 <b>22</b> 张图</span>
+                <span className="sep">·</span>
+                <span>最近 <b>3 分钟前</b></span>
+              </div>
+              {backBtn}
+            </div>
+
+            {/* 参数面板 + 结果双栏 */}
+            <div className="dm-body">
+              {/* 左 · 参数面板 */}
+              <div className="dm-form">
+                <div className="dm-form-scroll">
+                  <div className="dm-field">
+                    <div className="dm-field-h">
+                      选择模特<span className="opt">(已锁定商品 · {active.title})</span>
+                    </div>
+                    <div className="dm-models">
+                      {["Ava", "Zoe", "Ben", "Lin", "Mia"].map((name, index) => (
+                        <div className={`dm-model ${index === 0 ? "selected" : ""}`} key={name}>
+                          <div className="ph">{name} · 3:4</div>
+                          <div className="nm">{name}</div>
+                        </div>
+                      ))}
+                      <div className="dm-model add">
+                        <Plus size={18} />
+                      </div>
+                    </div>
+                  </div>
+
+                  <div className="dm-field">
+                    <div className="dm-field-h">生成张数</div>
+                    <div className="dm-chip-row">
+                      {["1 张", "2 张", "4 张", "8 张"].map((label) => (
+                        <button type="button" key={label} className={`dm-chip ${label === "4 张" ? "active" : ""}`}>
+                          {label}
+                        </button>
+                      ))}
+                    </div>
+                  </div>
+
+                  <div className="dm-field">
+                    <div className="dm-field-h">画面比例</div>
+                    <div className="dm-chip-row">
+                      {["1:1", "3:4", "9:16", "16:9"].map((label) => (
+                        <button type="button" key={label} className={`dm-chip ${label === "3:4" ? "active" : ""}`}>
+                          {label}
+                        </button>
+                      ))}
+                    </div>
+                  </div>
+
+                  <div className="dm-field">
+                    <div className="dm-field-h">补充提示词<span className="opt">(选填)</span></div>
+                    <textarea className="dm-textarea" placeholder="例:户外阳光、敷面膜的特写、白底产品摄影" />
+                  </div>
+                </div>
+
+                <div className="dm-form-cta">
+                  <div className="dm-cost">
+                    <span>预估扣费 <span className="v">≈ ¥1.20</span></span>
+                    <span>余额 ¥327.40</span>
+                  </div>
+                  <button className="dm-gen" type="button">
+                    <Sparkles size={15} />
+                    立即生成 · {active.title} × Ava
+                  </button>
+                </div>
+              </div>
+
+              {/* 右 · 结果(当前商品全部批次) */}
+              <div className="dm-result">
+                <div className="dm-result-h">
+                  <span className="ti">最近批次 · Ava × 4 张</span>
+                  <span className="sub">// 3 分钟前 · 已完成</span>
+                </div>
+
+                {/* 批次 1 */}
+                <div className="dm-batch">
+                  <div className="dm-batch-h">
+                    <div className="pic">4×</div>
+                    <div className="meta">
+                      <div className="nm">Ava × 4 张</div>
+                      <div className="info">
+                        {active.title} <span className="sep">·</span> 3:4 <span className="sep">·</span> 3 分钟前{" "}
+                        <span className="sep">·</span> ¥1.20
+                      </div>
+                    </div>
+                    <div className="ops">
+                      <button type="button" title="全部重跑"><RefreshCw size={13} /></button>
+                      <button type="button" title="全部下载"><Download size={13} /></button>
+                      <button type="button" title="加入资产库"><Bookmark size={13} /></button>
+                    </div>
+                  </div>
+                  <div className="dm-batch-grid">
+                    {[1, 2, 3, 4].map((n) => (
+                      <div className="dm-cell" key={n}>
+                        <div className="ph">Ava · #{n}</div>
+                        <span className="tag">3:4</span>
+                      </div>
+                    ))}
+                  </div>
+                </div>
+
+                {/* 批次 2 */}
+                <div className="dm-batch">
+                  <div className="dm-batch-h">
+                    <div className="pic">4×</div>
+                    <div className="meta">
+                      <div className="nm">Zoe × 4 张</div>
+                      <div className="info">
+                        {active.title} <span className="sep">·</span> 3:4 <span className="sep">·</span> 12 分钟前{" "}
+                        <span className="sep">·</span> ¥1.20
+                      </div>
+                    </div>
+                    <div className="ops">
+                      <button type="button" title="全部重跑"><RefreshCw size={13} /></button>
+                      <button type="button" title="全部下载"><Download size={13} /></button>
+                      <button type="button" title="加入资产库"><Bookmark size={13} /></button>
+                    </div>
+                  </div>
+                  <div className="dm-batch-grid">
+                    {[1, 2, 3, 4].map((n) => (
+                      <div className="dm-cell" key={n}>
+                        <div className="ph">Zoe · #{n}</div>
+                        <span className="tag">3:4</span>
+                      </div>
+                    ))}
+                  </div>
+                </div>
+
+                {/* 批次 3 · 生成中 */}
+                <div className="dm-batch">
+                  <div className="dm-batch-h">
+                    <div className="pic">2×</div>
+                    <div className="meta">
+                      <div className="nm">Ben × 2 张</div>
+                      <div className="info">
+                        {active.title} <span className="sep">·</span> 3:4 <span className="sep">·</span> 刚刚{" "}
+                        <span className="sep">·</span> 生成中
+                      </div>
+                    </div>
+                    <div className="ops">
+                      <button type="button" title="取消"><X size={13} /></button>
+                    </div>
+                  </div>
+                  <div className="dm-batch-grid">
+                    <div className="dm-cell"><div className="ph">生成中…</div></div>
+                    <div className="dm-cell"><div className="ph">生成中…</div></div>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </section>
+        </div>
+      </div>
+    );
+  }
+
+  // ── variant === "B" · v2:任务流主区 + 底部 fixed 参数栏 ──
+  return (
+    <div className="model-demo dm-b">
+      <div className="dm-banner">
+        // DEMO v2 · 方案 A · <b>商品空间 + 任务流主区</b>。左栏只保留商品空间(搜索+最近6条+全部入口),
+        任务列表搬到主区,筛选放主区顶部 toolbar,参数面板底部 fixed 化(类 image-optimize)。
+      </div>
+
+      <div className="dm-grid">
+        {side}
+
+        <section className="dm-main">
+          {/* 顶部 标题 + stats + toolbar */}
+          <div className="dm-main-h">
+            <div className="crumb">// 商品空间 · 模特上身图</div>
+            <div className="title-row">
+              <h2>{active.title}</h2>
+              {backBtn}
+            </div>
+            <div className="row">
+              <div className="stats">
+                <span>{active.category}</span><span className="sep">·</span>
+                <span>本商品 <b>6</b> 批</span><span className="sep">·</span>
+                <span>累计 <b>22</b> 张图</span><span className="sep">·</span>
+                <span>最近 <b>3 分钟前</b></span>
+              </div>
+              <span className="spacer" />
+              <div className="dm-tb">
+                <button className="icbtn" type="button" title="搜索批次"><Search size={13} /></button>
+                <button className="chip" type="button">时间 <ChevronDown size={10} /></button>
+                <button className="chip" type="button">状态 <ChevronDown size={10} /></button>
+                <button className="chip" type="button">模特 <ChevronDown size={10} /></button>
+              </div>
+            </div>
+          </div>
+
+          {/* 任务流 */}
+          <div className="dm-stream">
+            <div className="dm-day-h">
+              <span>今天</span>
+              <span className="ct">3 批 · 10 张</span>
+            </div>
+
+            {/* 批次 1 */}
+            <div className="dm-batch">
+              <div className="dm-batch-h">
+                <div className="pic">4×</div>
+                <div className="meta">
+                  <div className="nm">Ava × 4 张 <span className="pill ok stat-pill"><span className="dot" />已完成</span></div>
+                  <div className="info">
+                    <span>3:4</span><span className="sep">·</span>
+                    <span>3 分钟前</span><span className="sep">·</span>
+                    <span>¥1.20</span>
+                  </div>
+                </div>
+                <div className="ops">
+                  <button type="button" title="全部重跑"><RefreshCw size={13} /></button>
+                  <button type="button" title="全部下载"><Download size={13} /></button>
+                  <button type="button" title="加入资产库"><Bookmark size={13} /></button>
+                </div>
+              </div>
+              <div className="dm-batch-grid">
+                {[1, 2, 3, 4].map((n) => (
+                  <div className="dm-cell" key={n}><div className="ph">Ava · #{n}</div><span className="tag">3:4</span></div>
+                ))}
+              </div>
+            </div>
+
+            {/* 批次 2 */}
+            <div className="dm-batch">
+              <div className="dm-batch-h">
+                <div className="pic">4×</div>
+                <div className="meta">
+                  <div className="nm">Zoe × 4 张 <span className="pill ok stat-pill"><span className="dot" />已完成</span></div>
+                  <div className="info">
+                    <span>3:4</span><span className="sep">·</span>
+                    <span>12 分钟前</span><span className="sep">·</span>
+                    <span>¥1.20</span>
+                  </div>
+                </div>
+                <div className="ops">
+                  <button type="button" title="全部重跑"><RefreshCw size={13} /></button>
+                  <button type="button" title="全部下载"><Download size={13} /></button>
+                  <button type="button" title="加入资产库"><Bookmark size={13} /></button>
+                </div>
+              </div>
+              <div className="dm-batch-grid">
+                {[1, 2, 3, 4].map((n) => (
+                  <div className="dm-cell" key={n}><div className="ph">Zoe · #{n}</div><span className="tag">3:4</span></div>
+                ))}
+              </div>
+            </div>
+
+            {/* 批次 3 · 生成中 */}
+            <div className="dm-batch">
+              <div className="dm-batch-h">
+                <div className="pic">2×</div>
+                <div className="meta">
+                  <div className="nm">Ben × 2 张 <span className="pill info stat-pill"><span className="dot" />生成中</span></div>
+                  <div className="info">
+                    <span>3:4</span><span className="sep">·</span>
+                    <span>刚刚</span><span className="sep">·</span>
+                    <span>¥0.60</span>
+                  </div>
+                </div>
+                <div className="ops">
+                  <button type="button" title="取消"><X size={13} /></button>
+                </div>
+              </div>
+              <div className="dm-batch-grid">
+                <div className="dm-cell gen"><div className="ph">生成中…</div></div>
+                <div className="dm-cell gen"><div className="ph">生成中…</div></div>
+              </div>
+            </div>
+
+            {/* 昨天 */}
+            <div className="dm-day-h">
+              <span>昨天</span>
+              <span className="ct">2 批 · 8 张</span>
+            </div>
+
+            <div className="dm-batch">
+              <div className="dm-batch-h">
+                <div className="pic">4×</div>
+                <div className="meta">
+                  <div className="nm">Lin × 4 张 <span className="pill ok stat-pill"><span className="dot" />已完成</span></div>
+                  <div className="info">
+                    <span>3:4</span><span className="sep">·</span>
+                    <span>昨天 18:24</span><span className="sep">·</span>
+                    <span>¥1.20</span>
+                  </div>
+                </div>
+                <div className="ops">
+                  <button type="button" title="全部重跑"><RefreshCw size={13} /></button>
+                  <button type="button" title="全部下载"><Download size={13} /></button>
+                  <button type="button" title="加入资产库"><Bookmark size={13} /></button>
+                </div>
+              </div>
+              <div className="dm-batch-grid">
+                {[1, 2, 3, 4].map((n) => (
+                  <div className="dm-cell" key={n}><div className="ph">Lin · #{n}</div><span className="tag">3:4</span></div>
+                ))}
+              </div>
+            </div>
+
+            {/* 更早 */}
+            <div className="dm-day-h">
+              <span>更早</span>
+              <span className="ct">1 批 · 2 张 · 含 1 失败</span>
+            </div>
+
+            <div className="dm-batch">
+              <div className="dm-batch-h">
+                <div className="pic">2×</div>
+                <div className="meta">
+                  <div className="nm">Ava × 2 张 <span className="pill err stat-pill"><span className="dot" />失败</span></div>
+                  <div className="info">
+                    <span>3:4</span><span className="sep">·</span>
+                    <span>2 天前</span>
+                  </div>
+                </div>
+                <div className="ops">
+                  <button type="button" title="全部重跑"><RefreshCw size={13} /></button>
+                  <button type="button" title="删除"><Trash2 size={13} /></button>
+                </div>
+              </div>
+              <div className="dm-batch-grid">
+                <div className="dm-cell err"><div className="ph">失败 · 点重跑</div></div>
+                <div className="dm-cell err"><div className="ph">失败 · 点重跑</div></div>
+              </div>
+            </div>
+          </div>
+
+          {/* 底部 fixed 参数面板 */}
+          <div className="dm-param-wrap">
+            <div className="dm-param">
+              <button className="pchip active" type="button">
+                <span className="lbl-mono">模特</span>
+                <span>Ava</span>
+                <ChevronDown size={10} />
+              </button>
+              <button className="pchip" type="button">
+                <span className="lbl-mono">张数</span>
+                <span>4</span>
+                <ChevronDown size={10} />
+              </button>
+              <button className="pchip" type="button">
+                <span className="lbl-mono">比例</span>
+                <span>3:4</span>
+                <ChevronDown size={10} />
+              </button>
+              <button className="pchip" type="button">
+                <span className="lbl-mono">补充提示词</span>
+                <span className="muted">+ 添加</span>
+              </button>
+              <span className="spacer" />
+              <span className="meta-right">预估 <span className="v">¥1.20</span> · 余额 <span className="v">¥327.40</span></span>
+              <button className="gen-btn" type="button">
+                <Sparkles size={14} />
+                生成 · {active.title} × Ava
+              </button>
+            </div>
+          </div>
+        </section>
+      </div>
+    </div>
+  );
 }

core/qa/visual-parity/shot-aitools.mjs

@@ -0,0 +1,19 @@
+import { chromium } from "playwright";
+import { mkdirSync } from "node:fs";
+const BASE = "http://127.0.0.1:5180", API = "http://127.0.0.1:8010";
+const OUT = process.argv[2] || "shots-aitools";
+mkdirSync(OUT, { recursive: true });
+const tok = (await (await fetch(`${API}/api/auth/login/`, { method: "POST", headers: { "Content-Type": "application/json" }, body: JSON.stringify({ username: "airshelf", password: "Restraint2026" }) })).json()).token;
+const pages = [["model-photo", "/model-photo"], ["platform-cover", "/platform-cover"], ["demo-a", "/model-photo/demo-a"], ["demo-b", "/model-photo/demo-b"]];
+const browser = await chromium.launch();
+const ctx = await browser.newContext({ viewport: { width: 1440, height: 900 }, deviceScaleFactor: 1 });
+await ctx.addInitScript((t) => localStorage.setItem("airshelf_token", t), tok);
+const page = await ctx.newPage();
+for (const [name, route] of pages) {
+  await page.goto(BASE + route, { waitUntil: "networkidle", timeout: 30000 });
+  await page.waitForTimeout(1500);
+  await page.screenshot({ path: `${OUT}/${name}.png`, fullPage: true });
+  console.log("shot", name);
+}
+await browser.close();
+console.log("DONE");