开单计划增加决策理由；品种联想加速；复盘支持品种匹配

Co-authored-by: Cursor <cursoragent@cursor.com>

static/js/symbol.js

@@ -1,4 +1,14 @@
 (function () {
+    function formatSub(item) {
+        return '同花顺 ' + item.ths_code +
+            (item.market_code ? ' · ' + item.market_code : '') +
+            ' · ' + (item.exchange || '');
+    }
+
+    function formatInputLabel(item) {
+        return item.input_label || (item.name + ' ' + item.ths_code);
+    }
+
     function initSymbolInput(wrapper) {
         const input = wrapper.querySelector('.symbol-input');
         const hiddenThs = wrapper.querySelector('input[name="symbol"]');
@@ -8,19 +18,21 @@
         const dropdown = wrapper.querySelector('.symbol-dropdown');
         const selectedEl = wrapper.querySelector('.symbol-selected');
         let timer = null;
+        let abortCtrl = null;
+        const cache = new Map();
 
         function hideDropdown() {
             dropdown.classList.remove('show');
         }
 
         function selectItem(item) {
-            input.value = item.name;
+            const label = formatInputLabel(item);
+            input.value = label;
             hiddenThs.value = item.ths_code;
             hiddenName.value = item.name;
             if (hiddenMarket) hiddenMarket.value = item.market_code || '';
             if (hiddenSina) hiddenSina.value = item.sina_code || '';
-            selectedEl.textContent = '同花顺: ' + item.ths_code +
-                (item.market_code ? ' (' + item.market_code + ')' : '');
+            selectedEl.textContent = formatSub(item);
             hideDropdown();
         }
 
@@ -33,9 +45,7 @@
                     const div = document.createElement('div');
                     div.className = 'symbol-option';
                     div.innerHTML = item.display +
-                        '<div class="sub">同花顺 ' + item.ths_code +
-                        (item.market_code ? ' · ' + item.market_code : '') +
-                        ' · ' + item.exchange + '</div>';
+                        '<div class="sub">' + formatSub(item) + '</div>';
                     div.addEventListener('mousedown', function (e) {
                         e.preventDefault();
                         selectItem(item);
@@ -46,6 +56,29 @@
             dropdown.classList.add('show');
         }
 
+        function search(q) {
+            if (cache.has(q)) {
+                renderItems(cache.get(q));
+                return;
+            }
+            if (abortCtrl) {
+                abortCtrl.abort();
+            }
+            abortCtrl = new AbortController();
+            fetch('/api/symbols/search?q=' + encodeURIComponent(q), {
+                signal: abortCtrl.signal,
+            })
+                .then(function (r) { return r.json(); })
+                .then(function (items) {
+                    cache.set(q, items);
+                    renderItems(items);
+                })
+                .catch(function (err) {
+                    if (err && err.name === 'AbortError') return;
+                    hideDropdown();
+                });
+        }
+
         input.addEventListener('input', function () {
             hiddenThs.value = '';
             hiddenName.value = '';
@@ -59,11 +92,8 @@
             }
             clearTimeout(timer);
             timer = setTimeout(function () {
-                fetch('/api/symbols/search?q=' + encodeURIComponent(q))
-                    .then(function (r) { return r.json(); })
-                    .then(renderItems)
-                    .catch(function () { hideDropdown(); });
-            }, 300);
+                search(q);
+            }, 120);
         });
 
         input.addEventListener('blur', function () {
@@ -73,9 +103,7 @@
         input.addEventListener('focus', function () {
             const q = input.value.trim();
             if (q && !hiddenThs.value) {
-                fetch('/api/symbols/search?q=' + encodeURIComponent(q))
-                    .then(function (r) { return r.json(); })
-                    .then(renderItems);
+                search(q);
             }
         });
     }