fix(ui): search instrument names inside SoundFont, not just SF names

Add sfPresetSearchQuery state + search input in instrument selector
modal. Filters sfPresets by name (case-insensitive) when user types.
Clear search on SoundFont switch / modal close.

app/static/js/app.jsx

@@ -6424,6 +6424,7 @@ const App = () => {
   const [instrumentSelectorData, setInstrumentSelectorData] = useState(null);
   const openInstrumentSelector = trackId => {
     setInstrumentSelectorTrackId(trackId);
+    setSfPresetSearchQuery('');
     const track = activeTracks.find(t => t.id === trackId);
     if (track && track.instrumentId && track.instrumentId.startsWith('sf_')) {
       // Track already has a SoundFont assigned → open instrument selection directly
@@ -6437,7 +6438,8 @@ const App = () => {
     } else {
       // Reset synth state and always reload plugin data
       setSynthCategory(null);
-      setSelectedSoundFontId(null);
+    setSelectedSoundFontId(null);
+    setSfPresetSearchQuery('');
       window.SonicAPI.listPlugins().then(data => setInstrumentSelectorData(data)).catch(e => console.error('listPlugins failed:', e));
     }
   };
@@ -6445,6 +6447,7 @@ const App = () => {
     setInstrumentSelectorTrackId(null);
     setSynthCategory(null);
     setSelectedSoundFontId(null);
+    setSfPresetSearchQuery('');
   };
   const [synthCategory, setSynthCategory] = useState(null); // 'vst' | 'soundfont'
   const [selectedSoundFontId, setSelectedSoundFontId] = useState(null);
@@ -6452,6 +6455,7 @@ const App = () => {
   const [instrumentDropdownTrackId, setInstrumentDropdownTrackId] = useState(null);
   const [instrumentDropdownBtnRect, setInstrumentDropdownBtnRect] = useState(null);
   const [instrumentSearchQuery, setInstrumentSearchQuery] = useState('');
+  const [sfPresetSearchQuery, setSfPresetSearchQuery] = useState('');
   const filteredInstruments = useMemo(() => {
     if (!instrumentSelectorData || !instrumentSearchQuery) return { soundfonts: instrumentSelectorData?.soundfonts || [], vst: instrumentSelectorData?.vst_instruments || [] };
     const q = instrumentSearchQuery.toLowerCase();
@@ -6568,6 +6572,7 @@ const App = () => {
       setSynthCategory('soundfont');
       setInstrumentSelectorTrackId(trackId);
       setSfPresets(null);
+      setSfPresetSearchQuery('');
       // Fetch actual presets from the SoundFont
       const sfIdParam = instrumentId.replace('sf_', '');
       window.SonicAPI.listSoundfontInstruments(sfIdParam)
@@ -16866,12 +16871,20 @@ const App = () => {
     /*#__PURE__*/React.createElement(React.Fragment, null,
       /*#__PURE__*/React.createElement("div", { className: "flex justify-between items-center pb-3 border-b border-[#383838]" },
         /*#__PURE__*/React.createElement("div", null,
-          /*#__PURE__*/React.createElement("button", { onClick: () => { setSynthCategory(null); setSelectedSoundFontId(null); }, className: "text-[10px] text-cyan-400 hover:text-cyan-300 mr-2" }, "\u2190 Back"),
+          /*#__PURE__*/React.createElement("button", { onClick: () => { setSynthCategory(null); setSelectedSoundFontId(null); setSfPresetSearchQuery(''); }, className: "text-[10px] text-cyan-400 hover:text-cyan-300 mr-2" }, "\u2190 Back"),
           /*#__PURE__*/React.createElement("h3", { className: "text-sm font-bold inline text-amber-400" }, "Select Instrument")
         ),
         /*#__PURE__*/React.createElement("button", { onClick: closeInstrumentSelector, className: "text-slate-400 hover:text-slate-200" }, "\u2715")
       ),
       /*#__PURE__*/React.createElement("p", { className: "text-[10px] text-zinc-500 mt-2 mb-2" }, "SoundFont: ", selectedSoundFontId),
+      /*#__PURE__*/React.createElement("input", {
+        type: "text",
+        placeholder: "T\u00ecm nh\u1ea1c c\u1ee5 trong SoundFont...",
+        value: sfPresetSearchQuery,
+        onChange: e => setSfPresetSearchQuery(e.target.value),
+        autoFocus: true,
+        className: "w-full bg-black border border-zinc-700 rounded px-2 py-1.5 text-xs outline-none mb-2"
+      }),
       /*#__PURE__*/React.createElement("div", { className: "mt-2 max-h-72 overflow-y-auto space-y-0.5" },
         /*#__PURE__*/React.createElement("button", {
           onClick: () => setTrackInstrumentWithProgram(instrumentSelectorTrackId, selectedSoundFontId),
@@ -16881,14 +16894,16 @@ const App = () => {
           React.createElement("p", { className: "text-[10px] text-zinc-500 py-2" }, "Loading instruments...")
         ) : sfPresets.length > 0 ? (
           React.createElement("div", { className: "grid grid-cols-2 gap-0.5" },
-            sfPresets.map((p, i) => React.createElement("button", {
+            sfPresets
+              .filter(p => !sfPresetSearchQuery || (p.name || '').toLowerCase().includes(sfPresetSearchQuery.toLowerCase()))
+              .map((p, i) => React.createElement("button", {
               key: i,
               onClick: () => setTrackInstrumentWithProgram(instrumentSelectorTrackId, selectedSoundFontId, p.program, p.name || 'Preset ' + p.program, p.bank),
               className: "text-left px-2 py-1 text-[10px] rounded bg-zinc-800/60 hover:bg-amber-800 text-zinc-300 truncate"
             }, p.bank === 128 ? /*#__PURE__*/React.createElement("span", { className: "mr-1" }, "🥁") : null, p.name || 'Preset ' + p.program)
           ))
         ) : (
-          React.createElement("p", { className: "text-[10px] text-zinc-500 py-2" }, "No presets found.")
+          React.createElement("p", { className: "text-[10px] text-zinc-500 py-2" }, sfPresetSearchQuery ? "Kh\u00f4ng t\u00ecm th\u1ea5y nh\u1ea1c c\u1ee5 ph\u00f9 h\u1ee3p." : "No presets found.")
         )
       )
     )