feat(excluded-models): add excluded management view

static/css/components/banner.css

@@ -243,3 +243,58 @@
     -ms-user-select: none;
     user-select: none;
 }
+
+.excluded-view-banner {
+    margin-bottom: var(--space-2);
+    padding: 12px 16px;
+    border: 1px solid var(--border-color);
+    border-radius: var(--border-radius-sm);
+    background: linear-gradient(
+        135deg,
+        oklch(var(--lora-accent-l) var(--lora-accent-c) var(--lora-accent-h) / 0.08),
+        var(--card-bg)
+    );
+}
+
+.excluded-view-banner__content {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 12px;
+}
+
+.excluded-view-banner__title {
+    display: inline-flex;
+    align-items: center;
+    gap: 10px;
+    font-weight: 600;
+    color: var(--text-color);
+}
+
+.excluded-view-banner__back {
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+    border: 1px solid var(--border-color);
+    background: var(--card-bg);
+    color: var(--text-color);
+    border-radius: var(--border-radius-xs);
+    padding: 8px 12px;
+    cursor: pointer;
+}
+
+.excluded-view-banner__back:hover {
+    border-color: var(--lora-accent);
+    color: var(--lora-accent);
+}
+
+@media (max-width: 768px) {
+    .excluded-view-banner__content {
+        flex-direction: column;
+        align-items: stretch;
+    }
+
+    .excluded-view-banner__back {
+        justify-content: center;
+    }
+}

static/css/components/card.css

@@ -680,3 +680,22 @@
     margin-left: 0;
     line-height: 1;
 }
+
+.excluded-model {
+    border-style: dashed;
+}
+
+.model-excluded-badge {
+    width: 16px;
+    height: 16px;
+    padding: 0;
+    border-radius: 3px;
+    background: color-mix(in oklab, var(--warning-color, #d97706) 85%, white 15%);
+    color: white;
+    font-size: 0.65rem;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+    opacity: 0.9;
+}