fix(windows): hide engine consoles

Disable the native Windows frame at startup and render in-app window controls so packaged builds use Firelink's own titlebar placement instead of the default OS chrome.

Apply CREATE_NO_WINDOW to raw child processes used by the aria2 daemon and shared engine version checks. Route ffmpeg and deno checks through the same hidden version-check helper so Settings > Engine does not flash console windows.

Normalize Windows extended-length paths before returning approved download roots to the UI, while keeping canonicalization for backend safety checks. Detect yt-dlp's embedded runtime per platform so Windows onedir builds look for python*.dll instead of macOS Python.framework.

Verification: npm run build; cargo check --manifest-path src-tauri/Cargo.toml; cargo test --manifest-path src-tauri/Cargo.toml --lib; node --check scripts/smoke-packaged-app.js; Ruby YAML parse for .github/workflows/release.yml; git diff --check.

src/App.tsx

@@ -16,6 +16,7 @@ import SchedulerView from "./components/SchedulerView";
 import SpeedLimiterView from "./components/SpeedLimiterView";
 import LogsView from "./components/LogsView";
 import { KeychainPermissionModal } from "./components/KeychainPermissionModal";
+import { WindowControls } from "./components/WindowControls";
 import { useToast } from "./contexts/ToastContext";
 import { openUrl } from '@tauri-apps/plugin-opener';
 import { usePlatformInfo } from './utils/platform';
@@ -576,6 +577,7 @@ function App() {
 
   return (
     <div className="app-shell flex h-screen w-screen overflow-hidden text-text-primary">
+      {platform.os === 'windows' && <WindowControls />}
       <div
         className={`app-sidebar-shell relative z-20 shrink-0 transition-all duration-300 ease-[cubic-bezier(0.2,0.8,0.2,1)] ${
           isSidebarVisible ? 'opacity-100' : 'opacity-0 pointer-events-none'

src/components/WindowControls.tsx

@@ -0,0 +1,38 @@
+import { getCurrentWindow } from '@tauri-apps/api/window';
+import { Minus, Square, X } from 'lucide-react';
+
+const appWindow = getCurrentWindow();
+
+export function WindowControls() {
+  return (
+    <div className="window-controls" aria-label="Window controls">
+      <button
+        type="button"
+        className="window-control"
+        title="Minimize"
+        aria-label="Minimize"
+        onClick={() => void appWindow.minimize()}
+      >
+        <Minus size={13} strokeWidth={2.25} />
+      </button>
+      <button
+        type="button"
+        className="window-control"
+        title="Maximize"
+        aria-label="Maximize"
+        onClick={() => void appWindow.toggleMaximize()}
+      >
+        <Square size={11} strokeWidth={2.25} />
+      </button>
+      <button
+        type="button"
+        className="window-control close"
+        title="Close"
+        aria-label="Close"
+        onClick={() => void appWindow.close()}
+      >
+        <X size={14} strokeWidth={2.25} />
+      </button>
+    </div>
+  );
+}

src/index.css

@@ -1279,13 +1279,43 @@
   .mac-switch:checked::after {
     transform: translateX(16px);
   }
-  .downloads-view {
-    background: hsl(var(--main-bg));
-  }
+.downloads-view {
+  background: hsl(var(--main-bg));
+}
 
-  .main-titlebar {
-    height: 52px;
-    display: flex;
+.window-controls {
+  position: fixed;
+  top: 10px;
+  left: 12px;
+  z-index: 60;
+  display: inline-flex;
+  align-items: center;
+  gap: 7px;
+}
+
+.window-control {
+  width: 22px;
+  height: 22px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  color: hsl(var(--text-muted));
+  border-radius: 999px;
+}
+
+.window-control:hover {
+  color: hsl(var(--text-primary));
+  background: hsl(var(--item-hover));
+}
+
+.window-control.close:hover {
+  color: white;
+  background: #c42b1c;
+}
+
+.main-titlebar {
+  height: 52px;
+  display: flex;
     align-items: center;
     padding: 0 18px;
     border-bottom: 1px solid hsl(var(--border-color));