Add type picker for entity creation, icon grid filter, and serial port placeholder

- Replace inline type selectors with pre-modal type picker grid for devices,
  color strip sources, and value sources
- Add filterable search to icon grid when items > 9 (no auto-focus on touch)
- Show disabled (grayed-out) filtered items instead of hiding them
- Responsive grid columns (2-5 cols based on viewport width)
- Add "Select a port..." placeholder to serial port dropdown
- Update en/ru/zh locales with new keys

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/wled_controller/static/css/components.css

@@ -695,6 +695,80 @@ textarea:focus-visible {
     .icon-select-grid { gap: 4px; padding: 4px; }
 }
 
+/* ── Type Picker Overlay ─────────────────────────────────── */
+
+.type-picker-overlay {
+    position: fixed;
+    inset: 0;
+    z-index: 3000;
+    display: flex;
+    justify-content: center;
+    padding-top: 15vh;
+    background: rgba(0, 0, 0, 0);
+    backdrop-filter: blur(0px);
+    transition: background 0.2s, backdrop-filter 0.2s;
+}
+.type-picker-overlay.open {
+    background: rgba(0, 0, 0, 0.5);
+    backdrop-filter: blur(2px);
+}
+.type-picker-dialog {
+    align-self: flex-start;
+    width: min(680px, 90vw);
+    max-height: 70vh;
+    overflow-y: auto;
+    background: var(--card-bg);
+    border: 1px solid var(--border-color);
+    border-radius: 12px;
+    box-shadow: 0 16px 48px var(--shadow-color);
+    padding: 16px;
+    opacity: 0;
+    transform: translateY(-12px) scale(0.98);
+    transition: opacity 0.2s, transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
+}
+.type-picker-overlay.open .type-picker-dialog {
+    opacity: 1;
+    transform: translateY(0) scale(1);
+}
+.type-picker-title {
+    font-size: 0.85rem;
+    font-weight: 700;
+    text-transform: uppercase;
+    letter-spacing: 0.04em;
+    color: var(--text-secondary);
+    margin-bottom: 12px;
+    text-align: center;
+}
+.type-picker-filter {
+    width: 100%;
+    padding: 8px 12px;
+    margin-bottom: 12px;
+    border: 1px solid var(--border-color);
+    border-radius: var(--radius);
+    background: var(--bg-secondary);
+    color: var(--text-color);
+    font-size: 0.9rem;
+    outline: none;
+    box-sizing: border-box;
+}
+.type-picker-filter::placeholder {
+    color: var(--text-secondary);
+}
+.type-picker-filter:focus {
+    border-color: var(--primary-color);
+}
+.type-picker-dialog .icon-select-grid {
+    border: none;
+    background: none;
+    padding: 0;
+    /* Override inline columns — use responsive auto-fill */
+    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)) !important;
+}
+.type-picker-dialog .icon-select-cell.disabled {
+    opacity: 0.25;
+    pointer-events: none;
+}
+
 /* ── Entity Palette (command-palette style selector) ─────── */
 
 .entity-palette-overlay {