chore: add mac build+run helper

scripts/build-and-run-mac.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -euo pipefail
+cd "$(dirname "$0")/../apps/macos"
+
+BUILD_PATH=".build-local"
+PRODUCT="Clawdis"
+BIN="$BUILD_PATH/debug/$PRODUCT"
+
+printf "\n▶️  Building $PRODUCT (debug, build path: $BUILD_PATH)\n"
+swift build -c debug --product "$PRODUCT" --build-path "$BUILD_PATH"
+
+printf "\n⏹  Stopping existing $PRODUCT...\n"
+killall -q "$PRODUCT" 2>/dev/null || true
+
+printf "\n🚀 Launching $BIN ...\n"
+nohup "$BIN" >/tmp/clawdis.log 2>&1 &
+PID=$!
+printf "Started $PRODUCT (PID $PID). Logs: /tmp/clawdis.log\n"