Enhance card section filter: multi-term OR/AND, filtered count badge

Space-separated terms use OR logic, comma-separated use AND.
Count badge shows visible/total when filter is active.

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

server/src/wled_controller/static/js/core/card-sections.js

@@ -143,9 +143,9 @@ export class CardSection {
 
         this._lastItems = items;
 
-        // Update count badge
+        // Update count badge (will be refined by _applyFilter if a filter is active)
         const countEl = document.querySelector(`[data-cs-toggle="${this.sectionKey}"] .cs-count`);
-        if (countEl) countEl.textContent = items.length;
+        if (countEl && !this._filterValue) countEl.textContent = items.length;
 
         const newMap = new Map(items.map(i => [i.key, i.html]));
         const addCard = content.querySelector('.cs-add-card');
@@ -229,15 +229,32 @@ export class CardSection {
     }
 
     _applyFilter(content, query) {
-        const lower = query.toLowerCase();
         const cards = content.querySelectorAll('.card, .template-card:not(.add-template-card)');
         const addCard = content.querySelector('.cs-add-card');
+        const countEl = document.querySelector(`[data-cs-toggle="${this.sectionKey}"] .cs-count`);
+        const total = cards.length;
+
+        if (!query) {
+            cards.forEach(card => { card.style.display = ''; });
+            if (addCard) addCard.style.display = '';
+            if (countEl) countEl.textContent = total;
+            return;
+        }
+
+        const lower = query.toLowerCase();
+        // Comma-separated segments → AND; spaces within a segment → OR
+        const groups = lower.split(',').map(g => g.trim().split(/\s+/).filter(Boolean)).filter(g => g.length);
+        let visible = 0;
 
         cards.forEach(card => {
             const text = card.textContent.toLowerCase();
-            card.style.display = (!lower || text.includes(lower)) ? '' : 'none';
+            // Each group must have at least one matching term (AND of ORs)
+            const match = groups.every(orTerms => orTerms.some(term => text.includes(term)));
+            card.style.display = match ? '' : 'none';
+            if (match) visible++;
         });
 
-        if (addCard) addCard.style.display = lower ? 'none' : '';
+        if (addCard) addCard.style.display = 'none';
+        if (countEl) countEl.textContent = `${visible}/${total}`;
     }
 }