diff --git a/macos-bar/Resources/Info.plist b/macos-bar/Resources/Info.plist
new file mode 100644
index 00000000..73a77fb9
--- /dev/null
+++ b/macos-bar/Resources/Info.plist
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleExecutable</key>
+  <string>CCSBar</string>
+  <key>CFBundleIdentifier</key>
+  <string>ca.kaitran.ccs.bar</string>
+  <key>CFBundleName</key>
+  <string>CCS Bar</string>
+  <key>CFBundleDisplayName</key>
+  <string>CCS Bar</string>
+  <key>CFBundlePackageType</key>
+  <string>APPL</string>
+  <key>CFBundleShortVersionString</key>
+  <string>__VERSION__</string>
+  <key>CFBundleVersion</key>
+  <string>__VERSION__</string>
+  <key>LSMinimumSystemVersion</key>
+  <string>13.0</string>
+  <key>LSUIElement</key>
+  <true/>
+  <key>NSHumanReadableCopyright</key>
+  <string>CCS Bar</string>
+</dict>
+</plist>
diff --git a/macos-bar/Scripts/package_app.sh b/macos-bar/Scripts/package_app.sh
new file mode 100755
index 00000000..d03e701b
--- /dev/null
+++ b/macos-bar/Scripts/package_app.sh
@@ -0,0 +1,68 @@
+#!/usr/bin/env bash
+# Assemble and sign "CCS Bar.app" from a release build.
+#
+# Signing mode (CCS_BAR_SIGNING):
+#   adhoc        (default) ad-hoc sign with `codesign -s -`. Free, no Apple
+#                Developer account. Users open via right-click > Open or clear
+#                quarantine with `xattr -dr com.apple.quarantine`.
+#   developer-id Sign with a Developer ID Application identity (set
+#                CCS_BAR_SIGN_IDENTITY) for the notarized public-launch path.
+#
+# Usage:
+#   ./Scripts/package_app.sh [version]
+#   CCS_BAR_SIGNING=developer-id CCS_BAR_SIGN_IDENTITY="Developer ID Application: ..." ./Scripts/package_app.sh 0.1.0
+set -euo pipefail
+
+VERSION="${1:-0.0.0}"
+SIGNING="${CCS_BAR_SIGNING:-adhoc}"
+APP_NAME="CCS Bar"
+EXEC_NAME="CCSBar"
+
+ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+DIST="$ROOT/dist"
+APP="$DIST/$APP_NAME.app"
+
+echo "[i] Building release binary..."
+( cd "$ROOT" && swift build -c release )
+BIN="$ROOT/.build/release/$EXEC_NAME"
+if [[ ! -x "$BIN" ]]; then
+  echo "[X] Release binary not found at $BIN" >&2
+  exit 1
+fi
+
+echo "[i] Assembling $APP_NAME.app (version $VERSION)..."
+rm -rf "$APP"
+mkdir -p "$APP/Contents/MacOS" "$APP/Contents/Resources"
+cp "$BIN" "$APP/Contents/MacOS/$EXEC_NAME"
+sed "s/__VERSION__/$VERSION/g" "$ROOT/Resources/Info.plist" > "$APP/Contents/Info.plist"
+
+echo "[i] Signing ($SIGNING)..."
+case "$SIGNING" in
+  adhoc)
+    codesign --force --deep --sign - "$APP"
+    ;;
+  developer-id)
+    : "${CCS_BAR_SIGN_IDENTITY:?Set CCS_BAR_SIGN_IDENTITY for developer-id signing}"
+    codesign --force --deep --options runtime --timestamp \
+      --sign "$CCS_BAR_SIGN_IDENTITY" "$APP"
+    echo "[i] Signed with Developer ID. Notarize before public distribution:"
+    echo "    xcrun notarytool submit <zip> --keychain-profile <profile> --wait"
+    ;;
+  *)
+    echo "[X] Unknown CCS_BAR_SIGNING: $SIGNING (expected adhoc|developer-id)" >&2
+    exit 1
+    ;;
+esac
+
+ZIP="$DIST/CCS-Bar.zip"
+echo "[i] Zipping -> $ZIP"
+rm -f "$ZIP"
+( cd "$DIST" && ditto -c -k --keepParent "$APP_NAME.app" "CCS-Bar.zip" )
+
+echo "[OK] Packaged: $APP"
+echo "[OK] Asset:    $ZIP"
+if [[ "$SIGNING" == "adhoc" ]]; then
+  echo "[!] Ad-hoc build: first launch needs right-click > Open, or"
+  echo "    xattr -dr com.apple.quarantine \"/Applications/$APP_NAME.app\""
+fi
+echo "[i] To publish: gh release upload ccs-bar-latest \"$ZIP\" --clobber"