fix: restore Windows tray lifecycle

scripts/build.sh

@@ -26,15 +26,6 @@ if ! command -v npm &>/dev/null; then
 fi
 echo "  ✅ npm $(npm --version)"
 
-if [[ "$(go env GOOS)" == "linux" ]]; then
-  if ! command -v pkg-config &>/dev/null || ! pkg-config --exists ayatana-appindicator3-0.1; then
-    echo "  ❌ native tray development files are missing"
-    echo "     Debian/Ubuntu: sudo apt install libayatana-appindicator3-dev"
-    exit 1
-  fi
-  echo "  ✅ ayatana-appindicator3 $(pkg-config --modversion ayatana-appindicator3-0.1)"
-fi
-
 # ── Frontend (build first — Go //go:embed needs frontend/dist/) ──
 echo ""
 echo "[frontend]"

scripts/package-appimage.sh

@@ -106,11 +106,6 @@ while IFS= read -r candidate; do
 done < "$APPDIR/.elf-queue"
 rm -f "$APPDIR/.elf-queue"
 
-if ! compgen -G "$APPDIR/usr/lib/libayatana-appindicator3.so.*" >/dev/null; then
-  echo "native tray runtime library was not bundled" >&2
-  exit 1
-fi
-
 if command -v glib-compile-schemas >/dev/null; then
   glib-compile-schemas "$APPDIR/usr/share/glib-2.0/schemas"
 fi

scripts/test-package-formats.sh

@@ -26,11 +26,16 @@ grep -Fq 'gtk-update-icon-cache' "$ROOT/packaging/deb/postinst"
 grep -Fq 'packaging/linux/verstak' "$ROOT/scripts/package-appimage.sh"
 grep -Fq 'usr/bin/verstak' "$ROOT/packaging/linux/AppRun"
 grep -Fq 'libwebkit2gtk-4.1-0' "$ROOT/packaging/deb/control"
-grep -Fq 'libayatana-appindicator3-1' "$ROOT/packaging/deb/control"
+if grep -Fq 'appindicator' "$ROOT/packaging/deb/control"; then
+  echo "Debian package must not require the removed AppIndicator tray backend" >&2
+  exit 1
+fi
 grep -Fq 'appimagetool' "$ROOT/scripts/package-appimage.sh"
 grep -Fq 'WebKitWebProcess' "$ROOT/scripts/package-appimage.sh"
-grep -Fq 'libayatana-appindicator3.so.' "$ROOT/scripts/package-appimage.sh"
-grep -Fq 'ayatana-appindicator3-0.1' "$ROOT/scripts/build.sh"
+if grep -Fq 'appindicator' "$ROOT/scripts/package-appimage.sh" "$ROOT/scripts/build.sh"; then
+  echo "Linux build and AppImage scripts must not require AppIndicator" >&2
+  exit 1
+fi
 if grep -Fq 'FixedVersionRuntime' "$ROOT/scripts/package-windows-portable.sh"; then
   echo "Windows portable archive must not bundle Fixed Version WebView2" >&2
   exit 1