diff --git a/.idea/androidTestResultsUserPreferences.xml b/.idea/androidTestResultsUserPreferences.xml
index 42464aa..242d664 100644
--- a/.idea/androidTestResultsUserPreferences.xml
+++ b/.idea/androidTestResultsUserPreferences.xml
@@ -3,6 +3,32 @@
   <component name="AndroidTestResultsUserPreferences">
     <option name="androidTestResultsTableState">
       <map>
+        <entry key="-2002158262">
+          <value>
+            <AndroidTestResultsTableState>
+              <option name="preferredColumnWidths">
+                <map>
+                  <entry key="Duration" value="90" />
+                  <entry key="Medium_Phone_API_36.0" value="120" />
+                  <entry key="Tests" value="360" />
+                </map>
+              </option>
+            </AndroidTestResultsTableState>
+          </value>
+        </entry>
+        <entry key="-1209641426">
+          <value>
+            <AndroidTestResultsTableState>
+              <option name="preferredColumnWidths">
+                <map>
+                  <entry key="Duration" value="90" />
+                  <entry key="Medium_Phone_API_36.0" value="120" />
+                  <entry key="Tests" value="360" />
+                </map>
+              </option>
+            </AndroidTestResultsTableState>
+          </value>
+        </entry>
         <entry key="1337588336">
           <value>
             <AndroidTestResultsTableState>
diff --git a/.idea/deploymentTargetSelector.xml b/.idea/deploymentTargetSelector.xml
index 586219f..afdc8f1 100644
--- a/.idea/deploymentTargetSelector.xml
+++ b/.idea/deploymentTargetSelector.xml
@@ -5,10 +5,13 @@
       <SelectionState runConfigName="donextv2">
         <option name="selectionMode" value="DROPDOWN" />
       </SelectionState>
-      <SelectionState runConfigName="overdueCount_correctlyCalculated()">
+      <SelectionState runConfigName="donext">
         <option name="selectionMode" value="DROPDOWN" />
       </SelectionState>
-      <SelectionState runConfigName="donext">
+      <SelectionState runConfigName="DatabaseMigrationTest">
+        <option name="selectionMode" value="DROPDOWN" />
+      </SelectionState>
+      <SelectionState runConfigName="migrate_v6_to_v7_preserves_data_and_transforms_columns()">
         <option name="selectionMode" value="DROPDOWN" />
       </SelectionState>
     </selectionStates>
diff --git a/build.gradle b/build.gradle
index 457a751..75ba8ac 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,7 +14,6 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:8.13.0'
-        classpath 'org.sonarsource.scanner.gradle:sonarqube-gradle-plugin:3.3'
         classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:2.0.21'
         classpath 'org.jetbrains.kotlin:compose-compiler-gradle-plugin:2.0.21'
 
@@ -37,6 +36,4 @@ allprojects {
 
 tasks.register('clean', Delete) {
     delete rootProject.layout.buildDirectory
-}
-
-apply plugin: 'org.sonarqube'
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/donext/build.gradle b/donext/build.gradle
index c86fc15..c7dc969 100644
--- a/donext/build.gradle
+++ b/donext/build.gradle
@@ -22,15 +22,6 @@ android {
         targetCompatibility JavaVersion.VERSION_17
     }
 }
-sonarqube {
-    properties {
-        property 'sonar.host.url', '#{sonar.host.url}'
-        property 'sonar.login', '#{sonar.login}'
-        property 'sonar.organization', '#{sonar.organization}'
-        property 'sonar.projectKey', '#{sonar.projectkey}'
-        property 'sonar.branch', 'master'
-    }
-}
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
diff --git a/donextv2/build.gradle.kts b/donextv2/build.gradle.kts
index 992e26d..8da0d34 100644
--- a/donextv2/build.gradle.kts
+++ b/donextv2/build.gradle.kts
@@ -6,6 +6,10 @@ plugins {
     id("com.google.dagger.hilt.android")
 }
 
+ksp {
+    arg("room.schemaLocation", "$projectDir/schemas")
+}
+
 android {
     namespace = "com.wismna.geoffroy.donext"
     compileSdk = 36
@@ -20,6 +24,10 @@ android {
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
 
+    sourceSets {
+        getByName("debug").assets.srcDirs(files("$projectDir/schemas"))
+    }
+
     buildTypes {
         release {
             // Enables code-related app optimization.
@@ -46,6 +54,17 @@ android {
     composeOptions {
         kotlinCompilerExtensionVersion = "1.1.1"
     }
+
+    configurations.all {
+        resolutionStrategy {
+            eachDependency {
+                when (requested.module.toString()) {
+                    // Required for forcing the serialization lib version used by MigrationTestHelper
+                    "org.jetbrains.kotlinx:kotlinx-serialization-core-jvm" -> useVersion("1.8.0")
+                }
+            }
+        }
+    }
 }
 
 dependencies {
@@ -60,15 +79,17 @@ dependencies {
     implementation("androidx.compose.material:material-icons-extended:1.7.8")
     implementation("androidx.navigation:navigation-compose:2.9.5")
     implementation("androidx.hilt:hilt-navigation-compose:1.3.0")
-    implementation("androidx.test.ext:junit-ktx:1.3.0")
     implementation("sh.calvin.reorderable:reorderable:3.0.0")
+    androidTestImplementation("androidx.test.ext:junit-ktx:1.3.0")
     androidTestImplementation(platform("androidx.compose:compose-bom:2025.10.01"))
     androidTestImplementation("androidx.compose.ui:ui-test-junit4")
+    androidTestImplementation("com.google.truth:truth:1.4.4")
     debugImplementation("androidx.compose.ui:ui-tooling")
     debugImplementation("androidx.compose.ui:ui-test-manifest")
 
     val roomVersion = "2.8.3"
     implementation("androidx.room:room-runtime:$roomVersion")
+    androidTestImplementation("androidx.room:room-testing:$roomVersion")
     ksp("androidx.room:room-compiler:$roomVersion")
 
     val hiltVersion = "2.57.2"
diff --git a/donextv2/schemas/com.wismna.geoffroy.donext.data.local.AppDatabase/6.json b/donextv2/schemas/com.wismna.geoffroy.donext.data.local.AppDatabase/6.json
new file mode 100644
index 0000000..65a1260
--- /dev/null
+++ b/donextv2/schemas/com.wismna.geoffroy.donext.data.local.AppDatabase/6.json
@@ -0,0 +1,171 @@
+{
+  "formatVersion": 1,
+  "database": {
+    "version": 6,
+    "identityHash": "a911cf75d24949c0b24bd212cacc860c",
+    "entities": [
+      {
+        "tableName": "tasks",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`_id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, `name` TEXT, `description` TEXT, `cycle` INTEGER NOT NULL, `priority` INTEGER NOT NULL, `done` INTEGER NOT NULL, `deleted` INTEGER NOT NULL, `displayorder` INTEGER NOT NULL, `todayorder` INTEGER NOT NULL, `list` INTEGER NOT NULL, `duedate` TEXT, `todaydate` TEXT, FOREIGN KEY(`list`) REFERENCES `tasklist`(`_id`) ON UPDATE NO ACTION ON DELETE NO ACTION )",
+        "fields": [
+          {
+            "fieldPath": "_id",
+            "columnName": "_id",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "name",
+            "columnName": "name",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "description",
+            "columnName": "description",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "cycle",
+            "columnName": "cycle",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "priority",
+            "columnName": "priority",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "done",
+            "columnName": "done",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "deleted",
+            "columnName": "deleted",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "order",
+            "columnName": "displayorder",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "todayOrder",
+            "columnName": "todayorder",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "taskList",
+            "columnName": "list",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "dueDate",
+            "columnName": "duedate",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "todayDate",
+            "columnName": "todaydate",
+            "affinity": "TEXT",
+            "notNull": false
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": true,
+          "columnNames": [
+            "_id"
+          ]
+        },
+        "indices": [
+          {
+            "name": "index_tasks_list",
+            "unique": false,
+            "columnNames": [
+              "list"
+            ],
+            "orders": [],
+            "createSql": "CREATE INDEX IF NOT EXISTS `index_tasks_list` ON `${TABLE_NAME}` (`list`)"
+          }
+        ],
+        "foreignKeys": [
+          {
+            "table": "tasklist",
+            "onDelete": "NO ACTION",
+            "onUpdate": "NO ACTION",
+            "columns": [
+              "list"
+            ],
+            "referencedColumns": [
+              "_id"
+            ]
+          }
+        ]
+      },
+      {
+        "tableName": "tasklist",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`_id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, `name` TEXT, `visible` INTEGER NOT NULL, `displayorder` INTEGER NOT NULL, `taskCount` INTEGER NOT NULL)",
+        "fields": [
+          {
+            "fieldPath": "_id",
+            "columnName": "_id",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "name",
+            "columnName": "name",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "visible",
+            "columnName": "visible",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "order",
+            "columnName": "displayorder",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "taskCount",
+            "columnName": "taskCount",
+            "affinity": "INTEGER",
+            "notNull": true
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": true,
+          "columnNames": [
+            "_id"
+          ]
+        },
+        "indices": [],
+        "foreignKeys": []
+      }
+    ],
+    "views": [
+      {
+        "viewName": "TodayTasksView",
+        "createSql": "CREATE VIEW `${VIEW_NAME}` AS SELECT * FROM tasks WHERE todaydate = date('now','localtime')"
+      }
+    ],
+    "setupQueries": [
+      "CREATE TABLE IF NOT EXISTS room_master_table (id INTEGER PRIMARY KEY,identity_hash TEXT)",
+      "INSERT OR REPLACE INTO room_master_table (id,identity_hash) VALUES(42, 'a911cf75d24949c0b24bd212cacc860c')"
+    ]
+  }
+}
\ No newline at end of file
diff --git a/donextv2/schemas/com.wismna.geoffroy.donext.data.local.AppDatabase/7.json b/donextv2/schemas/com.wismna.geoffroy.donext.data.local.AppDatabase/7.json
new file mode 100644
index 0000000..da98cb4
--- /dev/null
+++ b/donextv2/schemas/com.wismna.geoffroy.donext.data.local.AppDatabase/7.json
@@ -0,0 +1,107 @@
+{
+  "formatVersion": 1,
+  "database": {
+    "version": 7,
+    "identityHash": "adb2abaced32bebf52bab45ae8069f40",
+    "entities": [
+      {
+        "tableName": "tasks",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, `name` TEXT NOT NULL, `description` TEXT, `priority` INTEGER NOT NULL, `done` INTEGER NOT NULL, `deleted` INTEGER NOT NULL, `task_list_id` INTEGER NOT NULL, `due_date` INTEGER)",
+        "fields": [
+          {
+            "fieldPath": "id",
+            "columnName": "id",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "name",
+            "columnName": "name",
+            "affinity": "TEXT",
+            "notNull": true
+          },
+          {
+            "fieldPath": "description",
+            "columnName": "description",
+            "affinity": "TEXT"
+          },
+          {
+            "fieldPath": "priority",
+            "columnName": "priority",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "isDone",
+            "columnName": "done",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "isDeleted",
+            "columnName": "deleted",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "taskListId",
+            "columnName": "task_list_id",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "dueDate",
+            "columnName": "due_date",
+            "affinity": "INTEGER"
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": true,
+          "columnNames": [
+            "id"
+          ]
+        }
+      },
+      {
+        "tableName": "task_lists",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, `name` TEXT NOT NULL, `display_order` INTEGER NOT NULL, `deleted` INTEGER NOT NULL)",
+        "fields": [
+          {
+            "fieldPath": "id",
+            "columnName": "id",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "name",
+            "columnName": "name",
+            "affinity": "TEXT",
+            "notNull": true
+          },
+          {
+            "fieldPath": "order",
+            "columnName": "display_order",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "isDeleted",
+            "columnName": "deleted",
+            "affinity": "INTEGER",
+            "notNull": true
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": true,
+          "columnNames": [
+            "id"
+          ]
+        }
+      }
+    ],
+    "setupQueries": [
+      "CREATE TABLE IF NOT EXISTS room_master_table (id INTEGER PRIMARY KEY,identity_hash TEXT)",
+      "INSERT OR REPLACE INTO room_master_table (id,identity_hash) VALUES(42, 'adb2abaced32bebf52bab45ae8069f40')"
+    ]
+  }
+}
\ No newline at end of file
diff --git a/donextv2/src/androidTest/java/com/wismna/geoffroy/donext/data/local/DatabaseTests.kt b/donextv2/src/androidTest/java/com/wismna/geoffroy/donext/data/local/DatabaseTests.kt
new file mode 100644
index 0000000..c66fee8
--- /dev/null
+++ b/donextv2/src/androidTest/java/com/wismna/geoffroy/donext/data/local/DatabaseTests.kt
@@ -0,0 +1,107 @@
+package com.wismna.geoffroy.donext.data.local
+
+import android.content.ContentValues
+import androidx.room.Room
+import androidx.room.testing.MigrationTestHelper
+import androidx.sqlite.db.SupportSQLiteDatabase
+import androidx.sqlite.db.framework.FrameworkSQLiteOpenHelperFactory
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import com.google.common.truth.Truth.assertThat
+import com.wismna.geoffroy.donext.domain.model.Priority
+import kotlinx.coroutines.runBlocking
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import java.io.IOException
+
+@RunWith(AndroidJUnit4::class)
+class DatabaseMigrationTest {
+
+    private val TEST_DB = "migration-test.db"
+
+    @get:Rule
+    val helper = MigrationTestHelper(
+        InstrumentationRegistry.getInstrumentation(),
+        AppDatabase::class.java,
+        listOf(),
+        FrameworkSQLiteOpenHelperFactory()
+    )
+
+    /**
+     * This test recreates the old SQLite schema (v6 from DatabaseHelper),
+     * inserts sample legacy rows, runs AppDatabase.MIGRATION_6_7 and then
+     * validates the migrated data by calling the real DAOs you provided.
+     */
+    @Test
+    @Throws(IOException::class)
+    fun migrate_v6_to_v7_preserves_data_and_transforms_columns() {
+        // Arrange
+        val context = InstrumentationRegistry.getInstrumentation().targetContext
+
+        val db: SupportSQLiteDatabase = helper.createDatabase(TEST_DB, 6)
+
+        val listValues = ContentValues().apply {
+            put("_id", 1)
+            put("name", "Legacy List")
+            put("displayorder", 10)
+            put("visible", 1)
+            put("taskCount", 0)
+        }
+        db.insert("tasklist", 0, listValues)
+
+        val taskValues = ContentValues().apply {
+            put("_id", 1) // explicit id
+            put("name", "Legacy Task")
+            put("description", "Old task description")
+            put("priority", 2)
+            put("cycle", 0)
+            put("done", 0)
+            put("deleted", 0)
+            put("displayorder", 5)
+            put("todayorder", 0)
+            put("list", 1) // references tasklist _id = 1
+            put("duedate", "2025-09-15") // legacy text date format that migration converts
+            put("todaydate", null as String?)
+        }
+        db.insert("tasks", 0, taskValues)
+        db.close()
+
+        // Act
+        helper.runMigrationsAndValidate(TEST_DB, 7, true, AppDatabase.MIGRATION_6_7)
+
+        val migratedRoom = Room.databaseBuilder(context, AppDatabase::class.java, TEST_DB)
+            .addMigrations(AppDatabase.MIGRATION_6_7)
+            .build()
+
+        // Assert
+        try {
+            val listDao = migratedRoom.taskListDao()
+            val taskDao = migratedRoom.taskDao()
+
+            runBlocking {
+                val migratedList = listDao.getTaskListById(1L)
+                assertThat(migratedList).isNotNull()
+                assertThat(migratedList!!.id).isEqualTo(1L)
+                assertThat(migratedList.name).isEqualTo("Legacy List")
+                assertThat(migratedList.isDeleted).isEqualTo(false)
+            }
+
+            runBlocking {
+                val migratedTask = taskDao.getTaskById(1L)
+                assertThat(migratedTask).isNotNull()
+                assertThat(migratedTask!!.id).isEqualTo(1L)
+                assertThat(migratedTask.name).isEqualTo("Legacy Task")
+                assertThat(migratedTask.description).isEqualTo("Old task description")
+                assertThat(migratedTask.priority).isEqualTo(Priority.HIGH)
+                assertThat(migratedTask.isDone).isEqualTo(false)
+                assertThat(migratedTask.isDeleted).isEqualTo(false)
+                assertThat(migratedTask.dueDate).isNotNull()
+                assertThat(migratedTask.dueDate!!).isGreaterThan(0L)
+                assertThat(migratedTask.taskListId).isEqualTo(1L)
+            }
+        } finally {
+            migratedRoom.close()
+        }
+    }
+}