feat(desktop): port v0.11.4-v0.15.2 from Tauri to Electron + Discord-parity audio (v0.16.0)

Chronological port of every Tauri release commit (v0.11.4 -> v0.15.2)
into the Electron rebuild, plus Discord-style audio handling that goes
beyond the Tauri original.

Highlights:
  - All 17 Tauri release commits ported (audio fixes, custom notification
    sound, Discord-style chat UX, profile banner, changelog page,
    Discord-parity call UX, screen-share echo + re-watch UX, audio-loop
    fix).
  - Native napi-rs audio-loopback addon with WASAPI process-loopback:
      * EXCLUDE_TARGET_PROCESS_TREE for full-screen shares -> peers
        never hear themselves echoed back through the capture.
      * INCLUDE_TARGET_PROCESS_TREE for window shares -> only the
        picked window's audio is captured, not the whole OS mixer
        (Discord parity).
      * HWND -> PID resolution via Win32 GetWindowThreadProcessId.
  - Discord-style screen-source picker (thumbnail grid, screens vs
    apps tabs, live-refreshing thumbnails).
  - Hash routing fix for packaged builds (file:// can't resolve
    BrowserRouter paths).
  - Tauri sources removed (apps/desktop/src-tauri).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/desktop/src/components/icons.tsx

@@ -93,6 +93,71 @@ export function LockIcon(props: IconProps) {
   );
 }
 
+export function WifiLowIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <path d="M5 12.55a11 11 0 0 1 14 0" opacity="0.35" />
+      <path d="M8.5 16a6 6 0 0 1 7 0" opacity="0.55" />
+      <path d="M12 20h.01" />
+    </Base>
+  );
+}
+
+export function WifiOffIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <path d="m2 2 20 20" />
+      <path d="M8.5 16a6 6 0 0 1 7 0" />
+      <path d="M2 8.82A15 15 0 0 1 6 7" />
+      <path d="M10.66 5c4.01-.36 8.14.9 11.34 3.76" />
+      <path d="M16.85 11.25a10 10 0 0 1 2.22 1.68" />
+      <path d="M5 12.55a11 11 0 0 1 5.17-2.39" />
+      <path d="M12 20h.01" />
+    </Base>
+  );
+}
+
+export function PinIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <path d="M12 17v5" />
+      <path d="M9 10.76a2 2 0 0 1-1.11 1.79l-1.78.9A2 2 0 0 0 5 15.24V16a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1v-.76a2 2 0 0 0-1.11-1.79l-1.78-.9A2 2 0 0 1 15 10.76V7a1 1 0 0 1 1-1 2 2 0 0 0 0-4H8a2 2 0 0 0 0 4 1 1 0 0 1 1 1z" />
+    </Base>
+  );
+}
+
+export function EyeOffIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <path d="m2 2 20 20" />
+      <path d="M6.71 6.71A13 13 0 0 0 2 12s3 7 10 7a10 10 0 0 0 4.29-1.29" />
+      <path d="M14.12 14.12a3 3 0 1 1-4.24-4.24" />
+      <path d="M9.88 5.09A11 11 0 0 1 12 5c7 0 10 7 10 7a13 13 0 0 1-2.16 3.19" />
+    </Base>
+  );
+}
+
+export function CaptionsIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <rect x="3" y="6" width="18" height="12" rx="2" />
+      <path d="M7 13a2 2 0 1 1 0-2" />
+      <path d="M14 13a2 2 0 1 1 0-2" />
+    </Base>
+  );
+}
+
+export function PinOffIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <path d="m2 2 20 20" />
+      <path d="M12 17v5" />
+      <path d="M9 10.76a2 2 0 0 1-1.11 1.79l-1.78.9A2 2 0 0 0 5 15.24V16a1 1 0 0 0 1 1h7" />
+      <path d="M15 13.24V7a1 1 0 0 1 1-1 2 2 0 0 0 0-4H8" />
+    </Base>
+  );
+}
+
 export function SparklesIcon(props: IconProps) {
   return (
     <Base {...props}>
@@ -364,6 +429,36 @@ export function GridIcon(props: IconProps) {
   );
 }
 
+export function ImageIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <rect x="3" y="5" width="18" height="14" rx="2" />
+      <circle cx="8.5" cy="10" r="1.5" />
+      <path d="m21 15-4.5-4.5a2 2 0 0 0-2.8 0L6 18" />
+    </Base>
+  );
+}
+
+export function FileIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <path d="M14 2H7a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h10a2 2 0 0 0 2-2V7Z" />
+      <path d="M14 2v5h5" />
+    </Base>
+  );
+}
+
+export function PollIcon(props: IconProps) {
+  return (
+    <Base {...props}>
+      <path d="M5 19V9" />
+      <path d="M12 19V5" />
+      <path d="M19 19v-7" />
+      <path d="M3 19h18" />
+    </Base>
+  );
+}
+
 export function FocusIcon(props: IconProps) {
   return (
     <Base {...props}>