fix: prettier formatting + add lint check hook

- Fix prettier formatting for localStorage utility
- Add pre-PR lint check script to prevent CI failures
- Create Claude Code hook configuration for automatic linting

lib/src/Utils/localStorage.ts

@@ -32,4 +32,4 @@ export const safeLocalStorage = {
       // Silently fail
     }
   },
-}
+}

scripts/check-lint.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+
+# Claude Code Hook: Pre-PR Lint Check
+# This script runs linting checks on both app and lib before PR operations
+
+set -e  # Exit on any error
+
+echo "🔍 Running lint checks before PR operation..."
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+LINT_FAILED=0
+
+# Check if we're in the utopia-map directory
+if [[ ! -f "tsconfig.base.json" ]]; then
+    echo -e "${RED}❌ Error: Must be run from utopia-map root directory${NC}"
+    exit 1
+fi
+
+echo -e "${YELLOW}📋 Checking app linting...${NC}"
+cd app
+if npm run test:lint:eslint; then
+    echo -e "${GREEN}✅ App linting passed${NC}"
+else
+    echo -e "${RED}❌ App linting failed${NC}"
+    LINT_FAILED=1
+fi
+cd ..
+
+echo -e "${YELLOW}📋 Checking lib linting...${NC}"
+cd lib
+if npm run test:lint:eslint; then
+    echo -e "${GREEN}✅ Lib linting passed${NC}"
+else
+    echo -e "${RED}❌ Lib linting failed${NC}"
+    LINT_FAILED=1
+fi
+cd ..
+
+if [[ $LINT_FAILED -eq 1 ]]; then
+    echo -e "${RED}❌ Lint checks failed. Please fix linting errors before creating/updating PR.${NC}"
+    echo -e "${YELLOW}💡 Tip: Run 'npm run lintfix' in the failing directory to auto-fix some issues.${NC}"
+    exit 1
+else
+    echo -e "${GREEN}🎉 All lint checks passed! Ready for PR operation.${NC}"
+fi