feat(ui): enhance model card header with sub-type display and gradient overlay

- Add gradient overlay to card header for better icon readability
- Update base model label to display sub-type abbreviation alongside base model
- Add separator between sub-type and base model for visual clarity
- Improve label styling with flex layout, adjusted padding, and enhanced backdrop filter
- Add helper functions for sub-type abbreviation retrieval and display names

static/css/components/card.css

@@ -296,6 +296,19 @@
     min-height: 20px;
 }
 
+/* Gradient overlay on right side for icon readability */
+.card-header::after {
+    content: '';
+    position: absolute;
+    top: 0;
+    right: 0;
+    width: 100px;
+    height: 100%;
+    background: linear-gradient(to left, oklch(0% 0 0 / 0.4) 0%, transparent 100%);
+    pointer-events: none;
+    border-top-right-radius: var(--border-radius);
+}
+
 .card-header-info {
     display: flex;
     align-items: center;
@@ -426,15 +439,39 @@
     white-space: nowrap;
     overflow: hidden;
     text-overflow: ellipsis;
-    display: inline-block;
+    display: inline-flex;
+    align-items: center;
+    gap: 4px;
     color: white;
     text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
-    background: rgba(255, 255, 255, 0.2);
-    padding: 2px var(--space-1);
+    background: rgba(255, 255, 255, 0.12);
+    padding: 2px 6px;
     border-radius: var(--border-radius-xs);
-    backdrop-filter: blur(2px);
-    font-size: 0.85em;
+    backdrop-filter: blur(4px);
+    font-size: 0.8em;
     line-height: 1.2;
+    font-weight: 500;
+}
+
+/* Subtle separator between sub-type and base model */
+.model-separator {
+    width: 1px;
+    height: 0.6em;
+    background: rgba(255, 255, 255, 0.25);
+    flex-shrink: 0;
+}
+
+/* Sub-type abbreviation styling */
+.model-sub-type {
+    opacity: 0.9;
+    flex-shrink: 0;
+}
+
+/* Base model abbreviation styling */
+.model-base-type {
+    flex-shrink: 1;
+    overflow: hidden;
+    text-overflow: ellipsis;
 }
 
 /* Style for version name */

static/js/components/shared/ModelCard.js

@@ -4,7 +4,7 @@ import { showModelModal } from './ModelModal.js';
 import { toggleShowcase } from './showcase/ShowcaseView.js';
 import { bulkManager } from '../../managers/BulkManager.js';
 import { modalManager } from '../../managers/ModalManager.js';
-import { NSFW_LEVELS, getBaseModelAbbreviation } from '../../utils/constants.js';
+import { NSFW_LEVELS, getBaseModelAbbreviation, getSubTypeAbbreviation, MODEL_SUBTYPE_DISPLAY_NAMES } from '../../utils/constants.js';
 import { MODEL_TYPES } from '../../api/apiConfig.js';
 import { getModelApiClient } from '../../api/modelApiFactory.js';
 import { showDeleteModal } from '../../utils/modalUtils.js';
@@ -580,6 +580,11 @@ export function createModelCard(model, modelType) {
     const baseModelLabel = model.base_model || 'Unknown';
     const baseModelAbbreviation = getBaseModelAbbreviation(baseModelLabel);
 
+    // Sub-type display (e.g., LoRA, LyCO, DoRA, CKPT, DM, EMB)
+    const subType = model.sub_type || '';
+    const subTypeAbbreviation = getSubTypeAbbreviation(subType);
+    const fullSubTypeName = MODEL_SUBTYPE_DISPLAY_NAMES[subType?.toLowerCase()] || subType || '';
+
     card.innerHTML = `
         <div class="card-preview ${shouldBlur ? 'blurred' : ''}">
             ${isVideo ?
@@ -592,8 +597,11 @@ export function createModelCard(model, modelType) {
                       <i class="fas fa-eye"></i>
                   </button>` : ''}
                 <div class="card-header-info">
-                    <span class="base-model-label ${shouldBlur ? 'with-toggle' : ''}" title="${baseModelLabel}">
-                        ${baseModelAbbreviation}
+                    <span class="base-model-label ${shouldBlur ? 'with-toggle' : ''}"
+                          title="${fullSubTypeName ? fullSubTypeName + ' | ' : ''}${baseModelLabel}">
+                        ${subTypeAbbreviation ? `<span class="model-sub-type">${subTypeAbbreviation}</span>` : ''}
+                        ${subTypeAbbreviation ? `<span class="model-separator"></span>` : ''}
+                        <span class="model-base-type">${baseModelAbbreviation}</span>
                     </span>
                     ${hasUpdateAvailable ? `
                         <span class="model-update-badge" title="${updateBadgeTooltip}">

static/js/utils/constants.js

@@ -73,6 +73,24 @@ export const MODEL_SUBTYPE_DISPLAY_NAMES = {
 // Backward compatibility alias
 export const MODEL_TYPE_DISPLAY_NAMES = MODEL_SUBTYPE_DISPLAY_NAMES;
 
+// Abbreviated sub-type names for compact display (e.g., in model card labels)
+export const MODEL_SUBTYPE_ABBREVIATIONS = {
+    lora: "LoRA",
+    locon: "LyCO",
+    dora: "DoRA",
+    checkpoint: "CKPT",
+    diffusion_model: "DM",
+    embedding: "EMB",
+};
+
+export function getSubTypeAbbreviation(subType) {
+    if (!subType || typeof subType !== 'string') {
+        return '';
+    }
+    const normalized = subType.toLowerCase();
+    return MODEL_SUBTYPE_ABBREVIATIONS[normalized] || subType.toUpperCase().slice(0, 4);
+}
+
 export const BASE_MODEL_ABBREVIATIONS = {
     // Stable Diffusion 1.x models
     [BASE_MODELS.SD_1_4]: 'SD1',