diff --git a/AGENTS.md b/AGENTS.md
index 9494667..39ab94a 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -23,11 +23,14 @@ cd backend && go test ./...
 mise up_mobile [device|emulator]  # défaut: emulator
 cd mobile-kotlin && ./gradlew :app:assembleDebug
 
+# Frontend tests (JVM, Robolectric + Room in-memory)
+cd mobile-kotlin && ./gradlew :app:testDebugUnitTest
+
 # PostgreSQL (via docker-compose)
 docker compose up postgres -d
 ```
 
-Il n'y a **pas** de tests mobiles (pas de dossier `src/test` ni `src/androidTest`).
+Tests mobiles : JVM unit tests dans `app/src/test` (JUnit + Robolectric + Room in-memory), lancés via `:app:testDebugUnitTest`. Pas de tests instrumentés (`androidTest`).
 
 ## Backend Structure
 
diff --git a/mobile-kotlin/app/build.gradle.kts b/mobile-kotlin/app/build.gradle.kts
index 31aa8a5..c9f0a78 100644
--- a/mobile-kotlin/app/build.gradle.kts
+++ b/mobile-kotlin/app/build.gradle.kts
@@ -40,6 +40,11 @@ android {
         compose = true
         buildConfig = true
     }
+    testOptions {
+        unitTests {
+            isIncludeAndroidResources = true
+        }
+    }
 }
 
 dependencies {
@@ -81,4 +86,11 @@ dependencies {
     implementation(libs.coil.compose)
 
     debugImplementation(libs.androidx.compose.ui.tooling)
+
+    testImplementation(libs.junit)
+    testImplementation(libs.robolectric)
+    testImplementation(libs.androidx.test.core)
+    testImplementation(libs.androidx.arch.core.testing)
+    testImplementation(libs.kotlinx.coroutines.test)
+    testImplementation(libs.androidx.room.testing)
 }
\ No newline at end of file
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FileRepository.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FileRepository.kt
index ca78539..ff46ba1 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FileRepository.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FileRepository.kt
@@ -8,6 +8,7 @@ import com.vaultdrop.mobile.data.local.entity.FileStatus
 import com.vaultdrop.mobile.data.remote.ApiClient
 import com.vaultdrop.mobile.data.remote.dto.FileDto
 import com.vaultdrop.mobile.domain.GenerateId
+import com.vaultdrop.mobile.domain.SyncPlacement
 import com.vaultdrop.mobile.domain.computeCategory
 import kotlinx.coroutines.flow.Flow
 import javax.inject.Inject
@@ -173,7 +174,7 @@ class FileRepository @Inject constructor(
             // Le snapshot serveur confirme la présence cloud : si une copie
             // physique existe aussi, placement local-cloud (jamais d'écrasement
             // de l'uri / de régression du placement).
-            syncStatus = if (existing?.uri != null) FileStatus.LOCAL_CLOUD else FileStatus.CLOUD,
+            syncStatus = SyncPlacement.confirmed(existing?.uri != null),
             processed = existing?.processed ?: false,
             addedAt = existing?.addedAt ?: now,
             updatedAt = now,
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FolderRepository.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FolderRepository.kt
index 7dc57d0..497cb0b 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FolderRepository.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FolderRepository.kt
@@ -9,6 +9,7 @@ import com.vaultdrop.mobile.data.remote.ApiClient
 import com.vaultdrop.mobile.data.remote.dto.FolderDto
 import com.vaultdrop.mobile.domain.DeviceIdentity
 import com.vaultdrop.mobile.domain.GenerateId
+import com.vaultdrop.mobile.domain.SyncPlacement
 import kotlinx.coroutines.flow.Flow
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -77,7 +78,7 @@ class FolderRepository @Inject constructor(
             // Le snapshot serveur confirme la présence cloud : si une copie
             // physique existe aussi, placement local-cloud (jamais d'écrasement
             // de l'uri / de régression du placement).
-            syncStatus = if (existing?.uri != null) FolderStatus.LOCAL_CLOUD else FolderStatus.CLOUD,
+            syncStatus = SyncPlacement.confirmed(existing?.uri != null),
             addedAt = existing?.addedAt ?: now,
             updatedAt = now,
         )
diff --git a/mobile-kotlin/gradle/libs.versions.toml b/mobile-kotlin/gradle/libs.versions.toml
index 8f4dc14..12a6e9e 100644
--- a/mobile-kotlin/gradle/libs.versions.toml
+++ b/mobile-kotlin/gradle/libs.versions.toml
@@ -17,6 +17,11 @@ moshi = "1.15.1"
 securityCrypto = "1.0.0"
 timber = "5.0.1"
 coil = "2.7.0"
+junit = "4.13.2"
+robolectric = "4.14.1"
+androidxTestCore = "1.6.1"
+archCore = "2.2.0"
+coroutinesTest = "1.9.0"
 
 [libraries]
 androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
@@ -50,6 +55,12 @@ moshi-kotlin = { group = "com.squareup.moshi", name = "moshi-kotlin", version.re
 androidx-security-crypto = { group = "androidx.security", name = "security-crypto", version.ref = "securityCrypto" }
 timber = { group = "com.jakewharton.timber", name = "timber", version.ref = "timber" }
 coil-compose = { group = "io.coil-kt", name = "coil-compose", version.ref = "coil" }
+junit = { group = "junit", name = "junit", version.ref = "junit" }
+robolectric = { group = "org.robolectric", name = "robolectric", version.ref = "robolectric" }
+androidx-test-core = { group = "androidx.test", name = "core-ktx", version.ref = "androidxTestCore" }
+androidx-arch-core-testing = { group = "androidx.arch.core", name = "core-testing", version.ref = "archCore" }
+kotlinx-coroutines-test = { group = "org.jetbrains.kotlinx", name = "kotlinx-coroutines-test", version.ref = "coroutinesTest" }
+androidx-room-testing = { group = "androidx.room", name = "room-testing", version.ref = "room" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }