fix(bridge): deploy ABI-fixed VST2 binary to install + open GUI for VST2 tracks

Qin_RV_x64.dll (Kong Audio) crashed with SEH 0xc0000005 in Bridger64.dll
using the stale install binary (pre-ABI-fix). Copy native_bridge build
Release binary into install/ so the packaged app runs the fixed host.

Also open the native GUI after loading a VST2 instrument (previously
VST3-only), so Qin_RV's editor (Qin_VST_Window via auxhost.exe) shows
automatically on track load.

app/templates/index.html

@@ -50,7 +50,7 @@
     <script src="/static/js/services/midiExtractor.js?v=202607281052"></script>
     <script src="/static/js/services/promptTemplateManager.js?v=202607281039"></script>
     <script src="/static/js/services/undoRedoEngine.js?v=202607290941"></script>
-    <script src="/static/js/app.precompiled.js?v=202608190002" defer></script>
+    <script src="/static/js/app.precompiled.js?v=202608182235" defer></script>
     <link rel="stylesheet" href="/static/css/styles.css?v=202607271016">
     <style>
         :root {