diff --git a/.github/hooks/pre-commit b/.github/hooks/pre-commit
index d797febf..2ccc5554 100755
--- a/.github/hooks/pre-commit
+++ b/.github/hooks/pre-commit
@@ -1,5 +1,5 @@
 #!/bin/sh
-set -e
+set -euo pipefail
 
 # 1) staged 파일 중 JS/TS 계열만 판별
 all_files=$(git diff --cached --name-only --diff-filter=ACM)
diff --git a/.github/hooks/pre-push b/.github/hooks/pre-push
index 0f98b2c9..63ea88fc 100755
--- a/.github/hooks/pre-push
+++ b/.github/hooks/pre-push
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -e
+set -euo pipefail
 
 # 푸시를 실행한 원격 이름과 URL
 remote_name=$1
diff --git a/.github/workflows/pr-title-lint.yaml b/.github/workflows/pr-title-lint.yaml
new file mode 100644
index 00000000..2a59234d
--- /dev/null
+++ b/.github/workflows/pr-title-lint.yaml
@@ -0,0 +1,19 @@
+name: PR Title Lint
+
+on:
+  pull_request:
+    types: [opened, edited, synchronize, reopened]
+
+jobs:
+  title-lint:
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: read
+    steps:
+      - uses: actions/checkout@v3
+      - name: Lint PR title
+        uses: deepakputhraya/action-pr-title@v1.0.2
+        with:
+          regex: '^\[(Feature|Fix|Chore|Docs|Style|Refactor|Test)\]!? .+(?: \(#\d+\))?$'
+          prefix_case_sensitive: true
+          github_token: ${{ github.token }}
\ No newline at end of file
diff --git a/package.json b/package.json
index 4e2c37e8..7f933500 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "dev": "bash src/scripts/start-dev.sh",
     "build": "bash src/scripts/build.sh",
     "android": "react-native run-android",
-    "android:build": "bash android/gradlew assembleDebug",
+    "android:build": "cd android && bash gradlew assembleDebug",
     "windows": "npx react-native run-windows",
     "windows:build": "react-native run-windows --no-launch --no-deploy --no-packager",
     "windows:init": "react-native init-windows --overwrite && npx react-native run-windows --msbuildprops \"RestoreLockedMode=false;BinaryLogger=;UseSharedCompilation=false;MaximumCpuCount=1\"",
diff --git a/src/scripts/build.sh b/src/scripts/build.sh
index bfcde097..8eefc641 100755
--- a/src/scripts/build.sh
+++ b/src/scripts/build.sh
@@ -1,22 +1,35 @@
 #!/bin/sh
+set -e
 
 ## OS 확인
-if [[ "$OSTYPE" == "darwin"* ]]; then
-  echo "Detected OS: macOS"
-  npm run macos:build &
-  npm run ios:build &
-  wait
+case "$OSTYPE" in
+  darwin*) 
+    echo "Detected OS: macOS"
+    npm run macos:build & pid1=$!
+    npm run ios:build & pid2=$!
+    ;;
+  cygwin*|msys*|win32*)
+    echo "Detected OS: Windows"
+    npm run windows:build & pid1=$!
+    npm run android:build & pid2=$!
+    ;;
+  *)
+    echo "Unknown OS: $OSTYPE" >&2
+    exit 1
+    ;;
+esac
 
-elif [[ "$OSTYPE" == "cygwin" ]] || [[ "$OSTYPE" == "msys" ]] || [[ "$OSTYPE" == "win32" ]]; then
-  echo "Detected OS: Windows"
-  npm run windows:build &
-  npm run android:build &
-  wait
+# 백그라운드 작업 완료 대기 후 exit code 수집
+wait "$pid1"
+ec1=$?
+wait "$pid2"
+ec2=$?
 
-else
-  echo "Unknown OS: $OSTYPE"
+# 둘 중 하나라도 실패하면 exit 1
+if [ "$ec1" -ne 0 ] || [ "$ec2" -ne 0 ]; then
+  echo "❌ 빌드 중 에러가 발생하였습니다. (desktop app: $ec1, mobile app: $ec2)" >&2
   exit 1
 fi
 
-echo "모든 빌드가 완료되었습니다."
+echo "✅ 모든 빌드가 성공적으로 완료되었습니다."
 exit 0
diff --git a/src/scripts/generate-cert.sh b/src/scripts/generate-cert.sh
index c95a53cf..a23d42e6 100755
--- a/src/scripts/generate-cert.sh
+++ b/src/scripts/generate-cert.sh
@@ -21,7 +21,7 @@ elif [[ "$OSTYPE" == "cygwin" ]] || [[ "$OSTYPE" == "msys" ]] || [[ "$OSTYPE" ==
   curl -L -o mkcert.exe https://github.com/FiloSottile/mkcert/releases/latest/download/mkcert-v1.4.4-windows-amd64.exe
 
 else
-  echo "Unknown OS: $OSTYPE"
+  echo "Unknown OS: $OSTYPE" >&2
   exit 1
 fi
 
diff --git a/src/scripts/start-dev.sh b/src/scripts/start-dev.sh
index 3f21c8a8..fe49da39 100755
--- a/src/scripts/start-dev.sh
+++ b/src/scripts/start-dev.sh
@@ -14,7 +14,7 @@ elif [[ "$OSTYPE" == "cygwin" ]] || [[ "$OSTYPE" == "msys" ]] || [[ "$OSTYPE" ==
   wait
 
 else
-  echo "Unknown OS: $OSTYPE"
+  echo "Unknown OS: $OSTYPE" >&2
   exit 1
 fi