fix: use Verstak brand icon in desktop builds

scripts/build-windows.sh

@@ -35,6 +35,8 @@ fi
 cd "$ROOT"
 echo "=== verstak desktop Windows amd64 build ==="
 
+"$ROOT/scripts/generate-brand-icons.sh"
+
 if [[ ! -d "$ROOT/frontend/node_modules" ]]; then
   if [[ -f "$ROOT/frontend/package-lock.json" ]]; then
     (cd "$ROOT/frontend" && npm ci --no-audit --no-fund)

scripts/build.sh

@@ -6,6 +6,8 @@ ROOT="$(cd "$(dirname "$0")/.." && pwd)"
 echo "=== verstak-desktop build ==="
 echo ""
 
+"$ROOT/scripts/generate-brand-icons.sh"
+
 # ── Dependency checks ──
 echo "[deps]"
 if ! command -v go &>/dev/null; then

scripts/generate-brand-icons.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+MAGICK="${MAGICK_BIN:-magick}"
+SOURCE="$ROOT/packaging/linux/verstak.svg"
+
+if ! command -v "$MAGICK" >/dev/null; then
+  echo "ImageMagick is required to generate Verstak application icons: $MAGICK not found" >&2
+  exit 1
+fi
+if [[ ! -f "$SOURCE" ]]; then
+  echo "Verstak SVG icon source is missing: $SOURCE" >&2
+  exit 1
+fi
+
+render_png() {
+  local size="$1"
+  local target="$2"
+  mkdir -p "$(dirname "$target")"
+  "$MAGICK" -background none "$SOURCE" -resize "${size}x${size}" "PNG32:$target"
+}
+
+render_ico() {
+  local target="$1"
+  shift
+  local temporary
+  temporary="$(mktemp -d)"
+  local images=()
+  for size in "$@"; do
+    local image="$temporary/${size}.png"
+    render_png "$size" "$image"
+    images+=("$image")
+  done
+  mkdir -p "$(dirname "$target")"
+  "$MAGICK" "${images[@]}" "$target"
+  rm -rf "$temporary"
+}
+
+render_png 256 "$ROOT/internal/shell/tray/verstak.png"
+render_ico "$ROOT/internal/shell/tray/verstak.ico" 16 20 24 32 48 256
+
+# Wails consumes this PNG while it prepares the Windows executable resources.
+# Both files are generated build inputs and therefore deliberately ignored by Git.
+render_png 1024 "$ROOT/build/appicon.png"
+render_ico "$ROOT/build/windows/icon.ico" 16 32 48 64 128 256
+
+echo "generated Verstak tray and application icons from $SOURCE"

scripts/test-package-formats.sh

@@ -53,6 +53,8 @@ grep -Fq 'LinkId=2124701' "$ROOT/README.md"
 grep -Fq 'WebView2 Runtime' "$ROOT/README.md"
 grep -Fq 'package-deb.sh' "$ROOT/scripts/release.sh"
 grep -Fq 'package-appimage.sh' "$ROOT/scripts/release.sh"
+grep -Fq 'generate-brand-icons.sh' "$ROOT/scripts/build.sh"
+grep -Fq 'generate-brand-icons.sh' "$ROOT/scripts/build-windows.sh"
 grep -Fq 'package-windows-portable.sh' "$ROOT/scripts/release.sh"
 git -C "$ROOT" check-ignore -q verstak-desktop-res.syso
 grep -Fq 'chmod -R a+rX' "$ROOT/scripts/build-linux-bundle.sh"