Fix SearchableSelect — only open on focus, close properly on blur/select

Dropdown was opening automatically on render and not closing when clicking
elsewhere. Now opens only on focus/click, closes on blur, selection, Enter,
Escape, and Tab. Selected value persists in the input after selection.

frontend/src/components/SearchableSelect.js

@@ -41,7 +41,7 @@ const OPTION_HIGHLIGHT = {
 export default function SearchableSelect({ value, options, onChange, onClose, placeholder, autoFocus }) {
   const [filter, setFilter] = useState(value || '');
   const [highlightIdx, setHighlightIdx] = useState(-1);
-  const [isOpen, setIsOpen] = useState(true);
+  const [isOpen, setIsOpen] = useState(false);
   const inputRef = useRef(null);
   const listRef = useRef(null);
 
@@ -49,6 +49,7 @@ export default function SearchableSelect({ value, options, onChange, onClose, pl
     if (autoFocus && inputRef.current) {
       inputRef.current.focus();
       inputRef.current.select();
+      setIsOpen(true);
     }
   }, [autoFocus]);
 
@@ -79,25 +80,31 @@ export default function SearchableSelect({ value, options, onChange, onClose, pl
       e.preventDefault();
       if (highlightIdx >= 0 && filteredOptions[highlightIdx]) {
         onChange(filteredOptions[highlightIdx]);
+        setFilter(filteredOptions[highlightIdx]);
       } else if (filter.trim()) {
         onChange(filter.trim());
       }
+      setIsOpen(false);
       if (onClose) onClose();
     } else if (e.key === 'Escape') {
+      setIsOpen(false);
       if (onClose) onClose();
     } else if (e.key === 'Tab') {
-      // Accept current value on tab
       if (highlightIdx >= 0 && filteredOptions[highlightIdx]) {
         onChange(filteredOptions[highlightIdx]);
+        setFilter(filteredOptions[highlightIdx]);
       } else if (filter.trim()) {
         onChange(filter.trim());
       }
+      setIsOpen(false);
       if (onClose) onClose();
     }
   };
 
   const handleSelect = (opt) => {
     onChange(opt);
+    setFilter(opt);
+    setIsOpen(false);
     if (onClose) onClose();
   };
 
@@ -106,16 +113,18 @@ export default function SearchableSelect({ value, options, onChange, onClose, pl
       <input
         ref={inputRef}
         style={{
-          background: '#0F172A', border: '1px solid #7C3AED', borderRadius: isOpen ? '0.375rem 0.375rem 0 0' : '0.375rem',
+          background: '#0F172A', border: isOpen ? '1px solid #7C3AED' : '1px solid #334155', borderRadius: isOpen ? '0.375rem 0.375rem 0 0' : '0.375rem',
           color: '#E2E8F0', padding: '0.3rem 0.5rem', fontSize: '0.7rem', width: '100%',
           fontFamily: "'JetBrains Mono', monospace", outline: 'none', boxSizing: 'border-box',
         }}
         value={filter}
         onChange={e => { setFilter(e.target.value); setHighlightIdx(-1); setIsOpen(true); }}
+        onFocus={() => setIsOpen(true)}
         onKeyDown={handleKeyDown}
         onBlur={() => {
           // Delay close so click on option can fire
           setTimeout(() => {
+            setIsOpen(false);
             if (filter.trim() && filter.trim() !== value) {
               onChange(filter.trim());
             }