diff --git a/android-app/app/src/main/java/com/korexlabs/dhinspeccion/data/FieldFindingsMobile.kt b/android-app/app/src/main/java/com/korexlabs/dhinspeccion/data/FieldFindingsMobile.kt
new file mode 100644
index 0000000..66099da
--- /dev/null
+++ b/android-app/app/src/main/java/com/korexlabs/dhinspeccion/data/FieldFindingsMobile.kt
@@ -0,0 +1,160 @@
+package com.korexlabs.dhinspeccion.data
+
+import android.content.Context
+import com.korexlabs.dhinspeccion.BuildConfig
+import com.squareup.moshi.Moshi
+import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import okhttp3.OkHttpClient
+import retrofit2.HttpException
+import retrofit2.Retrofit
+import retrofit2.converter.moshi.MoshiConverterFactory
+import retrofit2.http.Body
+import retrofit2.http.GET
+import retrofit2.http.Header
+import retrofit2.http.POST
+import retrofit2.http.Path
+
+data class FieldFindingAct(
+    val id: String,
+    val code: String,
+    val status: String,
+)
+
+data class FieldFindingCatalogItem(
+    val id: String,
+    val categoryId: String,
+    val code: String,
+    val sourceNumber: Int,
+    val title: String,
+    val legalBasis: String? = null,
+    val glossary: String? = null,
+    val suggestedSeverity: Int? = null,
+    val revision: Int = 1,
+    val categoryName: String? = null,
+)
+
+data class FieldFindingOther(
+    val enabled: Boolean = true,
+    val code: String = "OTHER",
+    val label: String = "OTROS",
+    val help: String? = null,
+)
+
+data class FieldFindingCatalog(
+    val typeConfigured: Boolean = false,
+    val configurationReason: String? = null,
+    val items: List<FieldFindingCatalogItem> = emptyList(),
+    val other: FieldFindingOther = FieldFindingOther(),
+)
+
+data class FieldFindingItem(
+    val id: String,
+    val actId: String,
+    val assetId: String,
+    val catalogItemId: String? = null,
+    val findingNumber: Int,
+    val code: String,
+    val status: String,
+    val title: String,
+    val description: String,
+    val severity: Int? = null,
+    val suggestedSeverity: Int? = null,
+    val correctionDueOn: String? = null,
+)
+
+data class FieldFindingOptionsResponse(
+    val act: FieldFindingAct,
+    val capture: CaptureStatus = CaptureStatus(),
+    val catalog: FieldFindingCatalog,
+    val findings: List<FieldFindingItem> = emptyList(),
+    val canAddAnother: Boolean = true,
+)
+
+data class CreateFieldFindingRequest(
+    val catalogItemId: String? = null,
+    val customTitle: String? = null,
+    val customLegalBasis: String? = null,
+    val description: String,
+    val severity: Int? = null,
+    val correctionDueOn: String? = null,
+)
+
+data class FieldFindingCreateResponse(
+    val act: FieldFindingAct,
+    val capture: CaptureStatus = CaptureStatus(),
+    val finding: FieldFindingItem,
+    val canAddAnother: Boolean = true,
+)
+
+private interface FieldFindingsApi {
+    @GET("inspection-visits/{visitId}/field-findings/{assetId}/options")
+    suspend fun options(
+        @Header("Authorization") authorization: String,
+        @Path("visitId") visitId: String,
+        @Path("assetId") assetId: String,
+    ): FieldFindingOptionsResponse
+
+    @POST("inspection-visits/{visitId}/field-findings/{assetId}")
+    suspend fun create(
+        @Header("Authorization") authorization: String,
+        @Path("visitId") visitId: String,
+        @Path("assetId") assetId: String,
+        @Body request: CreateFieldFindingRequest,
+    ): FieldFindingCreateResponse
+
+    @POST("auth/mobile/refresh")
+    suspend fun refresh(@Body request: RefreshRequest): MobileSessionResponse
+}
+
+/**
+ * Cliente separado para F2.3. Comparte el almacén cifrado de sesión de la APK,
+ * pero mantiene el contrato de Hallazgos desacoplado del cliente F2.2.
+ */
+class FieldFindingsRepository(context: Context) {
+    private val store = SecureSessionStore(context.applicationContext)
+    private val refreshMutex = Mutex()
+    private val moshi = Moshi.Builder().addLast(KotlinJsonAdapterFactory()).build()
+    private val api: FieldFindingsApi = Retrofit.Builder()
+        .baseUrl(BuildConfig.API_BASE_URL)
+        .client(OkHttpClient.Builder().build())
+        .addConverterFactory(MoshiConverterFactory.create(moshi))
+        .build()
+        .create(FieldFindingsApi::class.java)
+
+    suspend fun options(visitId: String, assetId: String): FieldFindingOptionsResponse =
+        authorized { session ->
+            api.options("Bearer ${session.accessToken}", visitId, assetId)
+        }
+
+    suspend fun create(
+        visitId: String,
+        assetId: String,
+        request: CreateFieldFindingRequest,
+    ): FieldFindingCreateResponse = authorized { session ->
+        api.create("Bearer ${session.accessToken}", visitId, assetId, request)
+    }
+
+    private suspend fun <T> authorized(block: suspend (StoredSession) -> T): T {
+        var session = store.load() ?: throw IllegalStateException("Sesión no iniciada")
+        try {
+            return block(session)
+        } catch (error: HttpException) {
+            if (error.code() != 401) throw error
+        }
+        session = refresh(session.refreshToken)
+        return block(session)
+    }
+
+    private suspend fun refresh(previousRefreshToken: String): StoredSession = refreshMutex.withLock {
+        val latest = store.load() ?: throw IllegalStateException("Sesión no iniciada")
+        if (latest.refreshToken != previousRefreshToken) return@withLock latest
+        try {
+            store.save(api.refresh(RefreshRequest(previousRefreshToken)))
+        } catch (error: Throwable) {
+            store.clear()
+            throw error
+        }
+    }
+}