diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..e5586d7
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,4 @@
+[*.{kt,kts}]
+ij_kotlin_allow_trailing_comma=true
+ij_kotlin_allow_trailing_comma_on_call_site=true
+ktlint_function_naming_ignore_when_annotated_with=Composable, Test
diff --git a/.github/ISSUE_TEMPLATE/issue-template.md b/.github/ISSUE_TEMPLATE/issue-template.md
new file mode 100644
index 0000000..affd72b
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/issue-template.md
@@ -0,0 +1,5 @@
+
+## Description
+- [ ] task1
+- [ ] task2
+- [ ] task3
diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000..b012081
--- /dev/null
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,11 @@
+- closed #issue number
+
+## Description
+
+- task1
+- task2
+- task3
+
+
+## To Reviewers
+
diff --git a/.github/workflows/pull_request_ci.yml b/.github/workflows/pull_request_ci.yml
new file mode 100644
index 0000000..b2dea84
--- /dev/null
+++ b/.github/workflows/pull_request_ci.yml
@@ -0,0 +1,58 @@
+name: Misik Android PR Checker
+
+on:
+  pull_request:
+    branches: [ develop, main ]
+
+defaults:
+  run:
+    shell: bash
+    working-directory: .
+
+jobs:
+  build:
+    name: PR Checker
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Cache Gradle packages
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+
+      - name: Setup JDK 17
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'temurin'
+          java-version: 17
+
+      - name: Setup Android SDK
+        uses: android-actions/setup-android@v2
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x ./gradlew
+
+      - name: Add Local Properties
+
+      - name: Build debug APK
+        run: ./gradlew assembleDebug --stacktrace
+
+      - name: Run ktlint
+        run: ./gradlew ktlintCheck
+
+      - name: Notify in Slack
+        uses: 8398a7/action-slack@v3
+        with:
+          status: ${{job.status}}
+          fields: repo,message,commit,author,action,eventName,ref,workflow
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+        if: always()
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 542b41a..c0eddf9 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -1,14 +1,15 @@
 plugins {
     alias(libs.plugins.android.application)
     alias(libs.plugins.jetbrains.kotlin.android)
+    alias(libs.plugins.ktlint)
 }
 
 android {
-    namespace = "com.nexters.misik_android"
+    namespace = "com.nexters.misik"
     compileSdk = 35
 
     defaultConfig {
-        applicationId = "com.nexters.misik_android"
+        applicationId = "com.nexters.misik"
         minSdk = 24
         targetSdk = 35
         versionCode = 1
@@ -25,7 +26,7 @@ android {
             isMinifyEnabled = false
             proguardFiles(
                 getDefaultProguardFile("proguard-android-optimize.txt"),
-                "proguard-rules.pro"
+                "proguard-rules.pro",
             )
         }
     }
@@ -66,4 +67,4 @@ dependencies {
     androidTestImplementation(libs.androidx.ui.test.junit4)
     debugImplementation(libs.androidx.ui.tooling)
     debugImplementation(libs.androidx.ui.test.manifest)
-}
\ No newline at end of file
+}
diff --git a/app/src/androidTest/java/com/nexters/misik_android/ExampleInstrumentedTest.kt b/app/src/androidTest/java/com/nexters/misik/ExampleInstrumentedTest.kt
similarity index 90%
rename from app/src/androidTest/java/com/nexters/misik_android/ExampleInstrumentedTest.kt
rename to app/src/androidTest/java/com/nexters/misik/ExampleInstrumentedTest.kt
index 7ab38b8..dc4d481 100644
--- a/app/src/androidTest/java/com/nexters/misik_android/ExampleInstrumentedTest.kt
+++ b/app/src/androidTest/java/com/nexters/misik/ExampleInstrumentedTest.kt
@@ -1,13 +1,11 @@
-package com.nexters.misik_android
+package com.nexters.misik
 
-import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.ext.junit.runners.AndroidJUnit4
-
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Assert.assertEquals
 import org.junit.Test
 import org.junit.runner.RunWith
 
-import org.junit.Assert.*
-
 /**
  * Instrumented test, which will execute on an Android device.
  *
@@ -21,4 +19,4 @@ class ExampleInstrumentedTest {
         val appContext = InstrumentationRegistry.getInstrumentation().targetContext
         assertEquals("com.nexters.misik_android", appContext.packageName)
     }
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/com/nexters/misik_android/MainActivity.kt b/app/src/main/java/com/nexters/misik/MainActivity.kt
similarity index 86%
rename from app/src/main/java/com/nexters/misik_android/MainActivity.kt
rename to app/src/main/java/com/nexters/misik/MainActivity.kt
index e53e2f8..e39968c 100644
--- a/app/src/main/java/com/nexters/misik_android/MainActivity.kt
+++ b/app/src/main/java/com/nexters/misik/MainActivity.kt
@@ -1,4 +1,4 @@
-package com.nexters.misik_android
+package com.nexters.misik
 
 import android.os.Bundle
 import androidx.activity.ComponentActivity
@@ -11,7 +11,7 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.tooling.preview.Preview
-import com.nexters.misik_android.ui.theme.MisikAndroidTheme
+import com.nexters.misik.ui.theme.MisikAndroidTheme
 
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -22,7 +22,7 @@ class MainActivity : ComponentActivity() {
                 Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
                     Greeting(
                         name = "Android",
-                        modifier = Modifier.padding(innerPadding)
+                        modifier = Modifier.padding(innerPadding),
                     )
                 }
             }
@@ -31,10 +31,13 @@ class MainActivity : ComponentActivity() {
 }
 
 @Composable
-fun Greeting(name: String, modifier: Modifier = Modifier) {
+fun Greeting(
+    name: String,
+    modifier: Modifier = Modifier,
+) {
     Text(
         text = "Hello $name!",
-        modifier = modifier
+        modifier = modifier,
     )
 }
 
@@ -44,4 +47,4 @@ fun GreetingPreview() {
     MisikAndroidTheme {
         Greeting("Android")
     }
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/com/nexters/misik_android/ui/theme/Color.kt b/app/src/main/java/com/nexters/misik/ui/theme/Color.kt
similarity index 74%
rename from app/src/main/java/com/nexters/misik_android/ui/theme/Color.kt
rename to app/src/main/java/com/nexters/misik/ui/theme/Color.kt
index 0aed12e..707812d 100644
--- a/app/src/main/java/com/nexters/misik_android/ui/theme/Color.kt
+++ b/app/src/main/java/com/nexters/misik/ui/theme/Color.kt
@@ -1,4 +1,4 @@
-package com.nexters.misik_android.ui.theme
+package com.nexters.misik.ui.theme
 
 import androidx.compose.ui.graphics.Color
 
@@ -8,4 +8,4 @@ val Pink80 = Color(0xFFEFB8C8)
 
 val Purple40 = Color(0xFF6650a4)
 val PurpleGrey40 = Color(0xFF625b71)
-val Pink40 = Color(0xFF7D5260)
\ No newline at end of file
+val Pink40 = Color(0xFF7D5260)
diff --git a/app/src/main/java/com/nexters/misik_android/ui/theme/Theme.kt b/app/src/main/java/com/nexters/misik/ui/theme/Theme.kt
similarity index 56%
rename from app/src/main/java/com/nexters/misik_android/ui/theme/Theme.kt
rename to app/src/main/java/com/nexters/misik/ui/theme/Theme.kt
index cbfe393..fd1c739 100644
--- a/app/src/main/java/com/nexters/misik_android/ui/theme/Theme.kt
+++ b/app/src/main/java/com/nexters/misik/ui/theme/Theme.kt
@@ -1,6 +1,5 @@
-package com.nexters.misik_android.ui.theme
+package com.nexters.misik.ui.theme
 
-import android.app.Activity
 import android.os.Build
 import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.material3.MaterialTheme
@@ -11,17 +10,18 @@ import androidx.compose.material3.lightColorScheme
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.platform.LocalContext
 
-private val DarkColorScheme = darkColorScheme(
-    primary = Purple80,
-    secondary = PurpleGrey80,
-    tertiary = Pink80
-)
-
-private val LightColorScheme = lightColorScheme(
-    primary = Purple40,
-    secondary = PurpleGrey40,
-    tertiary = Pink40
+private val DarkColorScheme =
+    darkColorScheme(
+        primary = Purple80,
+        secondary = PurpleGrey80,
+        tertiary = Pink80,
+    )
 
+private val LightColorScheme =
+    lightColorScheme(
+        primary = Purple40,
+        secondary = PurpleGrey40,
+        tertiary = Pink40,
     /* Other default colors to override
     background = Color(0xFFFFFBFE),
     surface = Color(0xFFFFFBFE),
@@ -30,29 +30,30 @@ private val LightColorScheme = lightColorScheme(
     onTertiary = Color.White,
     onBackground = Color(0xFF1C1B1F),
     onSurface = Color(0xFF1C1B1F),
-    */
-)
+     */
+    )
 
 @Composable
 fun MisikAndroidTheme(
     darkTheme: Boolean = isSystemInDarkTheme(),
     // Dynamic color is available on Android 12+
     dynamicColor: Boolean = true,
-    content: @Composable () -> Unit
+    content: @Composable () -> Unit,
 ) {
-    val colorScheme = when {
-        dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
-            val context = LocalContext.current
-            if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
-        }
+    val colorScheme =
+        when {
+            dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
+                val context = LocalContext.current
+                if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
+            }
 
-        darkTheme -> DarkColorScheme
-        else -> LightColorScheme
-    }
+            darkTheme -> DarkColorScheme
+            else -> LightColorScheme
+        }
 
     MaterialTheme(
         colorScheme = colorScheme,
         typography = Typography,
-        content = content
+        content = content,
     )
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/com/nexters/misik_android/ui/theme/Type.kt b/app/src/main/java/com/nexters/misik/ui/theme/Type.kt
similarity index 67%
rename from app/src/main/java/com/nexters/misik_android/ui/theme/Type.kt
rename to app/src/main/java/com/nexters/misik/ui/theme/Type.kt
index a11b9a9..6b763b5 100644
--- a/app/src/main/java/com/nexters/misik_android/ui/theme/Type.kt
+++ b/app/src/main/java/com/nexters/misik/ui/theme/Type.kt
@@ -1,4 +1,4 @@
-package com.nexters.misik_android.ui.theme
+package com.nexters.misik.ui.theme
 
 import androidx.compose.material3.Typography
 import androidx.compose.ui.text.TextStyle
@@ -7,14 +7,16 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.sp
 
 // Set of Material typography styles to start with
-val Typography = Typography(
-    bodyLarge = TextStyle(
-        fontFamily = FontFamily.Default,
-        fontWeight = FontWeight.Normal,
-        fontSize = 16.sp,
-        lineHeight = 24.sp,
-        letterSpacing = 0.5.sp
-    )
+val Typography =
+    Typography(
+        bodyLarge =
+            TextStyle(
+                fontFamily = FontFamily.Default,
+                fontWeight = FontWeight.Normal,
+                fontSize = 16.sp,
+                lineHeight = 24.sp,
+                letterSpacing = 0.5.sp,
+            ),
     /* Other default text styles to override
     titleLarge = TextStyle(
         fontFamily = FontFamily.Default,
@@ -30,5 +32,5 @@ val Typography = Typography(
         lineHeight = 16.sp,
         letterSpacing = 0.5.sp
     )
-    */
-)
\ No newline at end of file
+     */
+    )
diff --git a/app/src/test/java/com/nexters/misik_android/ExampleUnitTest.kt b/app/src/test/java/com/nexters/misik/ExampleUnitTest.kt
similarity index 81%
rename from app/src/test/java/com/nexters/misik_android/ExampleUnitTest.kt
rename to app/src/test/java/com/nexters/misik/ExampleUnitTest.kt
index 0d1e1f1..dba0f4d 100644
--- a/app/src/test/java/com/nexters/misik_android/ExampleUnitTest.kt
+++ b/app/src/test/java/com/nexters/misik/ExampleUnitTest.kt
@@ -1,9 +1,8 @@
-package com.nexters.misik_android
+package com.nexters.misik
 
+import org.junit.Assert.assertEquals
 import org.junit.Test
 
-import org.junit.Assert.*
-
 /**
  * Example local unit test, which will execute on the development machine (host).
  *
@@ -14,4 +13,4 @@ class ExampleUnitTest {
     fun addition_isCorrect() {
         assertEquals(4, 2 + 2)
     }
-}
\ No newline at end of file
+}
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index cb29075..b91237f 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -9,6 +9,9 @@ lifecycleRuntimeKtx = "2.8.7"
 activityCompose = "1.9.3"
 composeBom = "2024.04.01"
 
+# third-party
+ktlint = "12.1.0"
+
 [libraries]
 androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
 junit = { group = "junit", name = "junit", version.ref = "junit" }
@@ -28,4 +31,4 @@ androidx-material3 = { group = "androidx.compose.material3", name = "material3"
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }
 jetbrains-kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
-
+ktlint = { id = "org.jlleitschuh.gradle.ktlint", version.ref = "ktlint" }