From 557681cbeb9f9f763e9cc88ee1b4d6185b950eaf Mon Sep 17 00:00:00 2001
From: lamtruong28 <lamtruongpk31@gmail.com>
Date: Thu, 23 Jul 2026 13:20:13 +0700
Subject: [PATCH] Update Readme.md, add docstring

---
 README.md                                     | 91 +++++++++++++------
 .../utils/BluetoothManager.android.kt         |  6 ++
 .../app/torquevaultkmp/App.kt                 |  6 ++
 .../app/torquevaultkmp/AppViewModel.kt        | 31 +++++++
 .../app/torquevaultkmp/NetworkEngine.kt       |  8 ++
 .../app/torquevaultkmp/Platform.kt            |  9 +-
 .../app/torquevaultkmp/components/AppBar.kt   | 10 ++
 .../app/torquevaultkmp/components/BigIcon.kt  |  8 +-
 .../torquevaultkmp/components/FilterButton.kt | 14 ++-
 .../app/torquevaultkmp/components/Hint.kt     | 10 +-
 .../app/torquevaultkmp/components/RssiIcon.kt |  3 +
 .../data/network/api/AuthApi.kt               | 13 +++
 .../data/network/api/Endpoints.kt             |  5 +-
 .../data/network/api/WorkOrderApi.kt          | 12 +++
 .../data/network/dto/WorkOrderDto.kt          |  1 -
 .../data/network/mapper/AuthMapper.kt         |  6 +-
 .../data/network/mapper/WorkOrderMapper.kt    |  9 +-
 .../data/repository/DeviceRepository.kt       | 30 ++++++
 .../data/repository/LogRepository.kt          | 23 +++++
 .../data/repository/ScannerRepository.kt      | 21 ++++-
 .../data/repository/WorkOrderRepository.kt    |  4 +-
 .../repository/WorkOrderRepositoryImpl.kt     |  5 +-
 .../torquevaultkmp/data/storage/AppStorage.kt | 22 +++++
 .../torquevaultkmp/data/storage/ReferKeys.kt  | 12 +++
 .../data/storage/TokenManager.kt              | 12 +++
 .../app/torquevaultkmp/di/Koin.kt             |  6 ++
 .../app/torquevaultkmp/di/Modules.kt          | 15 +++
 .../torquevaultkmp/domain/model/WorkOrder.kt  | 27 ++++--
 .../domain/usecase/FetchWorkOrdersUseCase.kt  | 10 ++
 .../app/torquevaultkmp/kable/BleManager.kt    | 36 ++++++++
 .../app/torquevaultkmp/screens/Destination.kt | 13 ++-
 .../screens/auth/AuthViewModel.kt             | 21 +++++
 .../screens/auth/LoginScreen.kt               |  6 ++
 .../screens/bonded/BondedViewModel.kt         | 14 +++
 .../communication/UartCommunicationScreen.kt  |  8 +-
 .../torquevaultkmp/screens/home/HomeScreen.kt |  5 +
 .../screens/home/HomeViewModel.kt             | 13 +++
 .../torquevaultkmp/screens/logs/LogScreen.kt  |  9 ++
 .../screens/requirement/RequirementWrapper.kt | 25 +++++
 .../screens/scanner/ScannerScreen.kt          | 13 ++-
 .../screens/scanner/ScannerViewModel.kt       | 10 +-
 .../screens/settings/SettingViewModel.kt      | 24 +++++
 .../app/torquevaultkmp/utils/ApiException.kt  | 15 ++-
 .../app/torquevaultkmp/utils/AppInfo.kt       |  8 +-
 .../torquevaultkmp/utils/BluetoothManager.kt  | 28 ++++++
 .../app/torquevaultkmp/utils/Helper.kt        | 53 ++++++++++-
 .../torquevaultkmp/utils/NetworkMonitor.kt    | 19 +++-
 .../app/torquevaultkmp/utils/NoOpAntilog.kt   |  6 +-
 .../torquevaultkmp/utils/PermissionHandler.kt | 26 ++++++
 .../app/torquevaultkmp/utils/ShareLog.kt      | 12 ++-
 .../utils/BluetoothManager.ios.kt             |  6 ++
 51 files changed, 731 insertions(+), 68 deletions(-)

diff --git a/README.md b/README.md
index 7e7d049..a107bea 100644
--- a/README.md
+++ b/README.md
@@ -1,35 +1,72 @@
-This is a Kotlin Multiplatform project targeting Android, iOS.
+# TorqueVaultKMP
 
-* [/composeApp](./composeApp/src) is for code that will be shared across your Compose Multiplatform applications.
-  It contains several subfolders:
-  - [commonMain](./composeApp/src/commonMain/kotlin) is for code that’s common for all targets.
-  - Other folders are for Kotlin code that will be compiled for only the platform indicated in the folder name.
-    For example, if you want to use Apple’s CoreCrypto for the iOS part of your Kotlin app,
-    the [iosMain](./composeApp/src/iosMain/kotlin) folder would be the right place for such calls.
-    Similarly, if you want to edit the Desktop (JVM) specific part, the [jvmMain](./composeApp/src/jvmMain/kotlin)
-    folder is the appropriate location.
+TorqueVaultKMP is a Kotlin Multiplatform (KMP) application designed for managing torque measurements, connecting to digital torque devices via Bluetooth Low Energy (BLE), and handling work orders.
 
-* [/iosApp](./iosApp/iosApp) contains iOS applications. Even if you’re sharing your UI with Compose Multiplatform,
-  you need this entry point for your iOS app. This is also where you should add SwiftUI code for your project.
+The project targets **Android** and **iOS** using **Compose Multiplatform** for a shared UI and logic.
 
-### Build and Run Android Application
+## 🚀 Key Features
 
-To build and run the development version of the Android app, use the run configuration from the run widget
-in your IDE’s toolbar or build it directly from the terminal:
-- on macOS/Linux
-  ```shell
-  ./gradlew :composeApp:assembleDebug
-  ```
-- on Windows
-  ```shell
-  .\gradlew.bat :composeApp:assembleDebug
-  ```
+- **BLE Device Management**: Scan, connect, and bond with digital torque wrenches using the [Kable](https://github.com/JuulLabs/kable) library.
+- **Adaptive Scanning**: Automatically calibrates device discovery expiration by observing advertisement intervals, ensuring a responsive UI when devices stop broadcasting.
+- **Work Order Workflow**: 
+    - Fetch "Open" work orders from a remote API.
+    - Synchronize work order details (License Plate, Make, Torque requirements) with connected BLE devices.
+    - Receive and upload measurement results (Torque values, wheel/nut indices) back to the server.
+- **Bonding & Persistence**: Automatically remembers and auto-connects to bonded devices using **SQLDelight** for local storage.
+- **Diagnostic Logging**: A dedicated in-app logging system (`LogRepository`) that tracks system events, BLE communication, and HTTP requests. Supports exporting logs as CSV or Text for remote debugging.
+- **Theme Support**: Built-in support for Dark and Light modes.
 
-### Build and Run iOS Application
+## 🛠 Tech Stack
 
-To build and run the development version of the iOS app, use the run configuration from the run widget
-in your IDE’s toolbar or open the [/iosApp](./iosApp) directory in Xcode and run it from there.
+- **Kotlin**: `2.3.21`
+- **UI Framework**: [Compose Multiplatform](https://www.jetbrains.com/lp/compose-multiplatform/) `1.11.0`
+- **Dependency Injection**: [Koin](https://insert-koin.io/) `4.2.1`
+- **Networking**: [Ktor](https://ktor.io/) `3.4.3`
+- **Database**: [SQLDelight](https://cashapp.github.io/sqldelight/) `2.3.2`
+- **Bluetooth**: [Kable](https://github.com/JuulLabs/kable) `0.43.0`
+- **Logging**: [Napier](https://github.com/aakira/Napier) `2.7.1`
+- **Time/Date**: [Kotlinx Datetime](https://github.com/Kotlin/kotlinx-datetime) `0.8.0`
+- **Serialization**: [Kotlinx Serialization](https://github.com/Kotlin/kotlinx.serialization) `2.3.21`
+
+## 📁 Project Structure
+
+- `composeApp/src/commonMain`: Shared logic, UI, and data management.
+    - `screens/`: UI modules for Scanner, Logs, Home, Settings, and Auth.
+    - `data/`: Network DTOs, SQLDelight DB schema, and Repositories.
+    - `kable/`: BLE abstraction and manager.
+    - `domain/`: Business logic models and shared interfaces.
+- `composeApp/src/androidMain`: Android-specific implementations (e.g., Bluetooth permissions, Splash screen).
+- `composeApp/src/iosMain`: iOS-specific implementations (e.g., Native sharing sheets, CoreBluetooth delegates).
+- `iosApp`: Entry point for the iOS application.
+
+## 🏗 Getting Started
+
+### Prerequisites
+
+- Android Studio (Ladybug or newer) / IntelliJ IDEA.
+- Xcode 15+ (for iOS development).
+- Kotlin Multiplatform plugin.
+
+### Build and Run
+
+#### Android
+```bash
+./gradlew :composeApp:assembleDebug
+```
+
+#### iOS
+Open the `iosApp` directory in Xcode or use the run configuration in Android Studio.
+
+## ⚙️ Communication Protocol
+
+The app uses a custom UART protocol to communicate with torque devices. Commands include:
+- `START_WO`: Initiate work order fetch.
+- `ACCEPT_WO`: Confirm a specific work order selection.
+- `FINISH_WO`: Send measurement data back to the app for server upload.
+
+## 📜 Logging
+
+Logs are stored in memory (up to 1000 entries) and categorized into **System** and **Device** logs. They can be shared via the **Logs** screen using platform-native sharing components.
 
 ---
-
-Learn more about [Kotlin Multiplatform](https://www.jetbrains.com/help/kotlin-multiplatform-dev/get-started.html)…
\ No newline at end of file
+Developed by **Digitool Solutions**.
diff --git a/composeApp/src/androidMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/BluetoothManager.android.kt b/composeApp/src/androidMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/BluetoothManager.android.kt
index 17ac3d8..2f562cb 100644
--- a/composeApp/src/androidMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/BluetoothManager.android.kt
+++ b/composeApp/src/androidMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/BluetoothManager.android.kt
@@ -16,6 +16,12 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
 
+/**
+ * Android implementation of [BluetoothManager].
+ * 
+ * Manages Bluetooth adapter state and handles runtime permissions (BLUETOOTH_SCAN, 
+ * BLUETOOTH_CONNECT for API 31+, and ACCESS_FINE_LOCATION for older versions).
+ */
 class AndroidBluetoothManager(private val context: Context) : BluetoothManager {
     private val bluetoothManager = context.getSystemService(Context.BLUETOOTH_SERVICE) as AndroidBluetoothManager
     private val bluetoothAdapter: BluetoothAdapter? = bluetoothManager.adapter
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/App.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/App.kt
index 6333e78..4ce66a4 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/App.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/App.kt
@@ -9,6 +9,12 @@ import com.digitoolsolutions.app.torquevaultkmp.screens.scanner.ScannerViewModel
 import com.digitoolsolutions.app.torquevaultkmp.theme.TorqueVaultTheme
 import org.koin.compose.viewmodel.koinViewModel
 
+/**
+ * Entry point for the Compose Multiplatform application.
+ * 
+ * It manages the root theme, ensures system requirements are met via [RequirementWrapper],
+ * and hosts the [MainScreen] which contains the application's navigation graph.
+ */
 @Composable
 @Preview
 fun App(
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/AppViewModel.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/AppViewModel.kt
index 60347f2..55bcbc6 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/AppViewModel.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/AppViewModel.kt
@@ -13,41 +13,72 @@ import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.launch
 
+/**
+ * Core ViewModel for managing global application state across all screens.
+ * 
+ * Responsibilities include:
+ * - Persisting and retrieving theme preferences.
+ * - Monitoring authentication session expiration.
+ * - Controlling visibility of diagnostic logs.
+ */
 class AppViewModel(
     private val tokenManager: TokenManager,
     private val storage: AppStorage
 ) : ViewModel() {
 
+    /**
+     * Observable state for the current theme. 
+     * If null, the system theme is used.
+     */
     private val _isDarkTheme = mutableStateOf<Boolean?>(storage.load(ReferKeys.THEME))
     val isDarkTheme: State<Boolean?> = _isDarkTheme
 
+    /**
+     * Notifies the UI when the authentication token has expired.
+     */
     private val _sessionExpired = mutableStateOf(false)
     val sessionExpired: State<Boolean> = _sessionExpired
 
+    /**
+     * Determines if the Debug Logs tab should be visible in the navigation bar.
+     */
     private val _showLogs = MutableStateFlow(false)
     val showLogs: StateFlow<Boolean> = _showLogs
 
     init {
         viewModelScope.launch {
+            // Observe the token manager for session expiration events
             tokenManager.sessionExpired.collectLatest {
                 _sessionExpired.value = true
             }
         }
     }
 
+    /**
+     * Resets the session expiration alert.
+     */
     fun dismissSessionExpired() {
         _sessionExpired.value = false
     }
 
+    /**
+     * Checks if a valid session exists.
+     */
     fun isLoggedIn(): Boolean {
         return tokenManager.getRefreshToken() != null
     }
 
+    /**
+     * Toggles between Light and Dark mode and persists the choice.
+     */
     fun toggleTheme(isDark: Boolean) {
         _isDarkTheme.value = isDark
         storage.save(ReferKeys.THEME, isDark)
     }
 
+    /**
+     * Enables or disables the visibility of diagnostic logs.
+     */
     fun setShowLogs(enabled: Boolean) {
         _showLogs.value = enabled
     }
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/NetworkEngine.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/NetworkEngine.kt
index a684906..88366b3 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/NetworkEngine.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/NetworkEngine.kt
@@ -4,4 +4,12 @@ import com.digitoolsolutions.app.torquevaultkmp.data.network.api.AuthApi
 import com.digitoolsolutions.app.torquevaultkmp.data.storage.TokenManager
 import io.ktor.client.HttpClient
 
+/**
+ * Factory function to create a platform-specific [HttpClient].
+ * 
+ * Each platform (Android, iOS) provides its own implementation to handle
+ * specific requirements like OkHttp or Darwin engines, and to integrate
+ * with the [TokenManager] for automated auth header injection and 
+ * token refreshing.
+ */
 expect fun createPlatformHttpClient(tokenManager: TokenManager, authApi: AuthApi?): HttpClient
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/Platform.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/Platform.kt
index 946a8e9..43927ea 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/Platform.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/Platform.kt
@@ -1,7 +1,14 @@
 package com.digitoolsolutions.app.torquevaultkmp
 
+/**
+ * Interface representing the current operating platform (Android or iOS).
+ */
 interface Platform {
+    /** The name of the platform (e.g., "Android 34", "iOS 17.2"). */
     val name: String
 }
 
-expect fun getPlatform(): Platform
\ No newline at end of file
+/**
+ * Returns the [Platform] implementation for the current target.
+ */
+expect fun getPlatform(): Platform
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/AppBar.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/AppBar.kt
index 7bf749f..e4d7a24 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/AppBar.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/AppBar.kt
@@ -25,6 +25,16 @@ import torquevaultkmp.composeapp.generated.resources.baseline_menu_24
 import torquevaultkmp.composeapp.generated.resources.menu_item_accessibility
 import torquevaultkmp.composeapp.generated.resources.navigation_item_accessibility
 
+/**
+ * A customized [TopAppBar] consistent with the application's theme.
+ * 
+ * Supports a back button, a hamburger menu button, and custom actions.
+ * 
+ * @param title The composable to be displayed as the title.
+ * @param onNavigationButtonClick Callback for the back navigation button.
+ * @param onHamburgerButtonClick Callback for the side menu button.
+ * @param actions The actions to be displayed on the right side of the app bar.
+ */
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun AppBar(
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/BigIcon.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/BigIcon.kt
index 0dccc47..0732eea 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/BigIcon.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/BigIcon.kt
@@ -12,6 +12,9 @@ import androidx.compose.ui.graphics.vector.ImageVector
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
 
+/**
+ * A large icon component used for placeholder screens or large visual indicators.
+ */
 @Composable
 internal fun BigIcon(
     imageVector: ImageVector,
@@ -27,6 +30,9 @@ internal fun BigIcon(
     )
 }
 
+/**
+ * A version of [BigIcon] that uses a [Painter] instead of an [ImageVector].
+ */
 @Composable
 internal fun BigIcon(
     painterResource: Painter,
@@ -40,4 +46,4 @@ internal fun BigIcon(
         modifier = modifier.size(size),
         colorFilter = ColorFilter.tint(color),
     )
-}
\ No newline at end of file
+}
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/FilterButton.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/FilterButton.kt
index 6dbbb9f..ee15be8 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/FilterButton.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/FilterButton.kt
@@ -14,7 +14,11 @@ import org.jetbrains.compose.resources.painterResource
 import torquevaultkmp.composeapp.generated.resources.Res
 import torquevaultkmp.composeapp.generated.resources.baseline_close_24
 
-
+/**
+ * A customized [FilterChip] component used for toggling filters in lists (e.g., in the Logs screen).
+ * 
+ * When selected, it displays a close icon; otherwise, it displays the provided [icon].
+ */
 @Composable
 fun FilterButton(
     title: String,
@@ -34,6 +38,9 @@ fun FilterButton(
     )
 }
 
+/**
+ * A version of [FilterButton] that takes a [Painter].
+ */
 @Composable
 fun FilterButton(
     title: String,
@@ -60,6 +67,9 @@ fun FilterButton(
     )
 }
 
+/**
+ * A version of [FilterButton] that takes an [ImageVector].
+ */
 @Composable
 fun FilterButton(
     title: String,
@@ -77,4 +87,4 @@ fun FilterButton(
         containerColorDisabled = containerColorDisabled,
         onClick = onClick
     )
-}
\ No newline at end of file
+}
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/Hint.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/Hint.kt
index 91c962a..c0de59f 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/Hint.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/Hint.kt
@@ -10,7 +10,10 @@ import androidx.compose.ui.text.AnnotatedString
 import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.style.TextAlign
 
-
+/**
+ * A reusable text component typically used for displaying hints or 
+ * instructional labels with centered alignment by default.
+ */
 @Composable
 internal fun Hint(
     text: String,
@@ -28,6 +31,9 @@ internal fun Hint(
     )
 }
 
+/**
+ * An [AnnotatedString] version of the [Hint] component.
+ */
 @Composable
 internal fun Hint(
     text: AnnotatedString,
@@ -43,4 +49,4 @@ internal fun Hint(
         modifier = modifier,
         textAlign = textAlign
     )
-}
\ No newline at end of file
+}
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/RssiIcon.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/RssiIcon.kt
index ceb9f84..d448b40 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/RssiIcon.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/components/RssiIcon.kt
@@ -47,6 +47,9 @@ fun RssiIcon(rssi: Int) {
         )
     }
 }
+/**
+ * Determines the appropriate signal strength icon resource based on the RSSI value.
+ */
 private fun getImageRes(rssi: Int): DrawableResource = when {
     rssi < MEDIUM_RSSI -> Res.drawable.ic_signal_min
     rssi < MAX_RSSI -> Res.drawable.ic_signal_medium
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/api/AuthApi.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/api/AuthApi.kt
index acb4b34..8f2e3e4 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/api/AuthApi.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/api/AuthApi.kt
@@ -14,6 +14,11 @@ import io.ktor.http.ContentType
 import io.ktor.http.contentType
 
 
+/**
+ * API service for authentication-related operations.
+ * 
+ * Handles user login and authentication token refreshing.
+ */
 class AuthApi(
     private val client: HttpClient,
     private val tokenManager: TokenManager
@@ -21,6 +26,9 @@ class AuthApi(
     private val baseUrl: String?
         get() = tokenManager.getServerUrl()
 
+    /**
+     * Attempts to authenticate the user and stores the received tokens.
+     */
     suspend fun login(username: String, password: String): Boolean {
         return try {
             val res: LoginResponseDto = client.post("$baseUrl${Endpoints.AUTH_TOKEN}") {
@@ -34,6 +42,11 @@ class AuthApi(
             false
         }
     }
+    /**
+     * Attempts to refresh the access token using the stored refresh token.
+     * 
+     * @return The new access token if successful, or null if the refresh token is invalid/expired.
+     */
     suspend fun refreshToken(): String? {
         val refreshToken = tokenManager.getRefreshToken() ?: return null
         return try {
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/api/Endpoints.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/api/Endpoints.kt
index 40f43cb..e521f32 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/api/Endpoints.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/api/Endpoints.kt
@@ -1,5 +1,8 @@
 package com.digitoolsolutions.app.torquevaultkmp.data.network.api
 
+/**
+ * Constant values for API endpoints.
+ */
 object Endpoints {
     const val AUTH_TOKEN = "/token/"
     const val AUTH_REFRESH = "/token/refresh/"
@@ -9,4 +12,4 @@ object Endpoints {
     const val MEASURE = "measure/"
     const val RE_MEASURE = "remeasure/"
     const val CANCEL = "cancel-by-wrench/"
-}
\ No newline at end of file
+}
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/api/WorkOrderApi.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/api/WorkOrderApi.kt
index 3314b7e..0f16ccb 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/api/WorkOrderApi.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/api/WorkOrderApi.kt
@@ -20,6 +20,9 @@ import io.ktor.http.HttpStatusCode
 import io.ktor.http.contentType
 import io.ktor.http.path
 
+/**
+ * API service for managing work orders and torque measurements.
+ */
 class WorkOrderApi(
     private val client: HttpClient,
     private val tokenManager: TokenManager
@@ -27,6 +30,9 @@ class WorkOrderApi(
     private val baseUrl: String?
         get() = tokenManager.getServerUrl()
 
+    /**
+     * Retrieves a list of work orders available for the device.
+     */
     suspend fun fetchAbleWorkOrders(woID: String, action: String): List<WorkOrderDto> {
         return client.get("$baseUrl/${Endpoints.ABLE_WO}") {
             parameter("wo_id", woID)
@@ -34,6 +40,9 @@ class WorkOrderApi(
         }.body()
     }
 
+    /**
+     * Confirms that a specific device is handling a work order.
+     */
     suspend fun confirm(woID: String, deviceId: String, type: Int): Boolean {
         return try {
             val response = client.patch("$baseUrl/${Endpoints.WORK_ORDERS}/$woID/${Endpoints.CONFIRM}"){
@@ -46,6 +55,9 @@ class WorkOrderApi(
             false
         }
     }
+    /**
+     * Uploads measurement results for a specific work order.
+     */
     suspend fun sendMeasurement(woID: String, bodyPayload: SendMeasureDto, isRemeasure: Boolean = false): Result<MeasureResDto> {
         return try {
             val endPath = if(isRemeasure) Endpoints.RE_MEASURE else Endpoints.MEASURE
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/dto/WorkOrderDto.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/dto/WorkOrderDto.kt
index e855179..1b9a31d 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/dto/WorkOrderDto.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/dto/WorkOrderDto.kt
@@ -2,7 +2,6 @@ package com.digitoolsolutions.app.torquevaultkmp.data.network.dto
 
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
-import kotlinx.serialization.json.JsonElement
 
 @Serializable
 data class WorkOrderDto(
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/mapper/AuthMapper.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/mapper/AuthMapper.kt
index 2bd94f8..5a2a82a 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/mapper/AuthMapper.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/mapper/AuthMapper.kt
@@ -9,6 +9,10 @@ import com.digitoolsolutions.app.torquevaultkmp.domain.model.LoginResponse
 import com.digitoolsolutions.app.torquevaultkmp.domain.model.RefreshRequest
 import com.digitoolsolutions.app.torquevaultkmp.domain.model.RefreshResponse
 
+/**
+ * Extension functions to map Authentication Network DTOs to Domain models.
+ */
+
 fun LoginRequestDto.toDomain(): LoginRequest {
     return LoginRequest(username,password)
 }
@@ -21,4 +25,4 @@ fun RefreshRequestDto.toDomain(): RefreshRequest {
 }
 fun RefreshResponseDto.toDomain(): RefreshResponse {
     return RefreshResponse(access)
-}
\ No newline at end of file
+}
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/mapper/WorkOrderMapper.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/mapper/WorkOrderMapper.kt
index ab6e25c..d655435 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/mapper/WorkOrderMapper.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/network/mapper/WorkOrderMapper.kt
@@ -6,8 +6,10 @@ import com.digitoolsolutions.app.torquevaultkmp.domain.model.MeasResult
 import com.digitoolsolutions.app.torquevaultkmp.domain.model.MeasureResult
 import com.digitoolsolutions.app.torquevaultkmp.domain.model.Service
 import com.digitoolsolutions.app.torquevaultkmp.domain.model.WorkOrder
-import kotlinx.serialization.json.doubleOrNull
-import kotlinx.serialization.json.jsonPrimitive
+
+/**
+ * Extension functions to map Work Order Network DTOs to Domain models.
+ */
 
 fun WorkOrderDto.toDomain(): WorkOrder {
     return WorkOrder(
@@ -46,10 +48,11 @@ fun WorkOrderDto.toDomain(): WorkOrder {
         updatedAt = updatedAt
     )
 }
+
 fun MeasureResDto.toDomain(): MeasureResult {
     return MeasureResult(
         status = status,
         message = message,
         data = data.toDomain()
     )
-}
\ No newline at end of file
+}
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/DeviceRepository.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/DeviceRepository.kt
index 9a5bccd..b8ac019 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/DeviceRepository.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/DeviceRepository.kt
@@ -8,24 +8,48 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.IO
 import kotlinx.coroutines.flow.Flow
 
+/**
+ * Repository for managing bonded BLE devices in the local database.
+ * 
+ * It uses SQLDelight to persist device identifiers and names, facilitating
+ * automatic reconnection features.
+ */
 class DeviceRepository(
     private val dbQueries: AppDatabaseQueries
 ) {
     companion object {
         const val PAGE_SIZE = 20L
     }
+
+    /**
+     * Persists a device to the local database. 
+     * If the device already exists, it will be updated.
+     */
     suspend fun saveDevice(id: String, name: String) {
         dbQueries.insertDevice(id, name)
     }
 
+    /**
+     * Returns a flow of all saved devices.
+     */
     fun getAllDevices(): Flow<List<Device>> = 
         dbQueries.getAllDevices()
             .asFlow()
             .mapToList(Dispatchers.IO)
 
+    /**
+     * Returns a flow containing only the identifiers of all saved devices.
+     */
     suspend fun getAllDeviceIdsFlow(): Flow<List<String>> {
         return dbQueries.getAllDeviceIds().asFlow().mapToList(Dispatchers.IO)
     }
+
+    /**
+     * Retrieves a paged list of devices for efficient UI rendering.
+     * 
+     * @param limit Maximum number of items to return.
+     * @param lastId The identifier of the last item in the previous page for cursor-based pagination.
+     */
     suspend fun getDevicesPaged(limit: Long = PAGE_SIZE, lastId: String? = null): List<Device> {
         return if (lastId == null) {
             dbQueries.getDevicesFirstPage(limit).executeAsList()
@@ -34,8 +58,14 @@ class DeviceRepository(
         }
     }
 
+    /**
+     * Retrieves a specific device by its identifier.
+     */
     suspend fun getDeviceById(id: String): Device? =
         dbQueries.getDeviceById(id).executeAsOneOrNull()
 
+    /**
+     * Removes a device from the bonded list.
+     */
     suspend fun deleteDevice(id: String) = dbQueries.deleteDeviceById(id)
 }
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/LogRepository.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/LogRepository.kt
index 0dd8b63..c9ab70d 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/LogRepository.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/LogRepository.kt
@@ -11,6 +11,16 @@ import kotlin.time.Clock
 import kotlin.uuid.ExperimentalUuidApi
 import kotlin.uuid.Uuid
 
+/**
+ * Represents a single log entry captured within the application.
+ * 
+ * @property id Unique identifier for the log entry.
+ * @property title A short descriptive title of the event.
+ * @property content Detailed information about the event.
+ * @property timestamp Epoch time in milliseconds when the log was created.
+ * @property deviceId The identifier of the BLE device if the log is device-specific.
+ * @property source Categorization of the log (e.g., SYSTEM or DEVICE).
+ */
 data class Log(
     val id: String,
     val title: String,
@@ -19,12 +29,25 @@ data class Log(
     val deviceId: String?,
     val source: String,
 )
+
+/**
+ * Repository responsible for managing diagnostic logs in memory.
+ * It maintains a buffer of the last [MAX_LOGS] entries and provides
+ * filtering capabilities for the UI.
+ */
 class LogRepository() {
     companion object {
         private const val MAX_LOGS = 1000
     }
     private val _logs = MutableStateFlow<List<Log>>(emptyList())
     val logs: StateFlow<List<Log>> = _logs
+    /**
+     * Appends a new log entry to the buffer.
+     * 
+     * @param title The title of the log.
+     * @param content The message or data to log.
+     * @param deviceId Optional device identifier. If null, the log is marked as [LogFilter.SYSTEM].
+     */
     @OptIn(ExperimentalUuidApi::class)
     fun appendLog(title: String, content: String, deviceId: String? = null) {
         val source = if (deviceId == null) LogFilter.SYSTEM else LogFilter.DEVICE
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/ScannerRepository.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/ScannerRepository.kt
index 6f9122a..5948dbb 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/ScannerRepository.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/ScannerRepository.kt
@@ -1,25 +1,40 @@
 package com.digitoolsolutions.app.torquevaultkmp.data.repository
 
-import com.digitoolsolutions.app.torquevaultkmp.data.network.api.WorkOrderApi
-import com.digitoolsolutions.app.torquevaultkmp.data.network.dto.MeasureResDto
 import com.digitoolsolutions.app.torquevaultkmp.data.network.dto.SendMeasureDto
-import com.digitoolsolutions.app.torquevaultkmp.data.network.mapper.toDomain
 import com.digitoolsolutions.app.torquevaultkmp.domain.model.MeasureResult
 import com.digitoolsolutions.app.torquevaultkmp.domain.model.WorkOrder
 
+/**
+ * High-level repository used by [ScannerViewModel] to manage work order state 
+ * for connected BLE devices.
+ * 
+ * It acts as a bridge between the BLE scanning logic and the [WorkOrderRepository].
+ */
 class ScannerRepository(private val woRepository: WorkOrderRepository) {
+    /**
+     * Fetches a list of work orders available for a device.
+     */
     suspend fun getAbleWorkOrders(woID: String = "0", action: String = "next"): List<WorkOrder> {
         return woRepository.fetchAbleWorkOrders(woID, action)
     }
 
+    /**
+     * Confirms the selection of a specific work order on a device.
+     */
     suspend fun confirmWorkOrder(woID: String, deviceId: String, type: Int): Boolean {
         return woRepository.confirm(woID, deviceId, type)
     }
 
+    /**
+     * Uploads measurement results received from the BLE device to the server.
+     */
     suspend fun sendMeasurementResult(woId: String, data: SendMeasureDto, isReTorque: Boolean = false): Result<MeasureResult> {
        return woRepository.sendMeasurement(woId, data, isReTorque)
     }
 
+    /**
+     * Notifies the server that a work order has been cancelled by the operator on the device.
+     */
     suspend fun sendCancelWorkOrder(woId: String, data: SendMeasureDto): Result<WorkOrder> {
         return woRepository.cancelWorkOrder(woId, data)
     }
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/WorkOrderRepository.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/WorkOrderRepository.kt
index af09345..e49fd63 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/WorkOrderRepository.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/WorkOrderRepository.kt
@@ -1,10 +1,12 @@
 package com.digitoolsolutions.app.torquevaultkmp.data.repository
 
-import com.digitoolsolutions.app.torquevaultkmp.data.network.dto.MeasureResDto
 import com.digitoolsolutions.app.torquevaultkmp.data.network.dto.SendMeasureDto
 import com.digitoolsolutions.app.torquevaultkmp.domain.model.MeasureResult
 import com.digitoolsolutions.app.torquevaultkmp.domain.model.WorkOrder
 
+/**
+ * Interface defining the operations for managing work orders via remote API.
+ */
 interface WorkOrderRepository {
     suspend fun fetchAbleWorkOrders(woId: String, action: String): List<WorkOrder>
     suspend fun confirm(woID: String, deviceId: String, type: Int): Boolean
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/WorkOrderRepositoryImpl.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/WorkOrderRepositoryImpl.kt
index 1dbea7c..fe8b9c9 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/WorkOrderRepositoryImpl.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/repository/WorkOrderRepositoryImpl.kt
@@ -5,6 +5,9 @@ import com.digitoolsolutions.app.torquevaultkmp.data.network.dto.SendMeasureDto
 import com.digitoolsolutions.app.torquevaultkmp.data.network.mapper.toDomain
 import com.digitoolsolutions.app.torquevaultkmp.domain.model.MeasureResult
 import com.digitoolsolutions.app.torquevaultkmp.domain.model.WorkOrder
+/**
+ * Implementation of [WorkOrderRepository] that communicates with the backend API.
+ */
 class WorkOrderRepositoryImpl(private val api: WorkOrderApi) : WorkOrderRepository {
     override suspend fun fetchAbleWorkOrders(woId: String, action: String): List<WorkOrder> {
         val dto = api.fetchAbleWorkOrders(woId, action)
@@ -16,7 +19,7 @@ class WorkOrderRepositoryImpl(private val api: WorkOrderApi) : WorkOrderReposito
         deviceId: String,
         type: Int
     ): Boolean {
-        return api.confirm(woID,deviceId, type)
+        return api.confirm(woID, deviceId, type)
     }
 
     override suspend fun sendMeasurement(woId: String, data: SendMeasureDto, isReTorque: Boolean): Result<MeasureResult> {
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/storage/AppStorage.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/storage/AppStorage.kt
index eedfbca..437c0d9 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/storage/AppStorage.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/storage/AppStorage.kt
@@ -3,10 +3,32 @@ package com.digitoolsolutions.app.torquevaultkmp.data.storage
 import kotlinx.coroutines.flow.Flow
 import kotlin.reflect.KClass
 
+/**
+ * Platform-agnostic interface for persistent key-value storage.
+ * 
+ * Implementations should handle storing simple data types like Booleans,
+ * Strings, and Numbers using native mechanisms (e.g., SharedPreferences on Android,
+ * NSUserDefaults on iOS).
+ */
 interface AppStorage {
+    /**
+     * Persists a value for the given key.
+     */
     fun <T : Any> save(key: String, value: T)
+
+    /**
+     * Retrieves a value for the given key.
+     */
     fun <T : Any> load(key: String, type: KClass<T>): T?
+
+    /**
+     * Removes the data associated with the given key.
+     */
     fun remove(key: String)
+
+    /**
+     * Returns a flow that emits updates whenever the value for the given key changes.
+     */
     fun <T : Any> observe(key: String, type: KClass<T>): Flow<T>
 }
 
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/storage/ReferKeys.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/storage/ReferKeys.kt
index c86da1b..3bbbb3e 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/storage/ReferKeys.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/storage/ReferKeys.kt
@@ -1,9 +1,21 @@
 package com.digitoolsolutions.app.torquevaultkmp.data.storage
 
+/**
+ * Constants used as keys for persistent storage throughout the application.
+ */
 object ReferKeys {
+    /** The access token used for authenticated API requests. */
     const val ACCESS_TOKEN = "access_token"
+    
+    /** The refresh token used to obtain new access tokens. */
     const val REFRESH_TOKEN = "refresh_token"
+    
+    /** The base URL of the remote server. */
     const val SERVER_URL = "server_url"
+    
+    /** User preference for Dark Mode (Boolean). */
     const val THEME = "theme"
+    
+    /** User preference for automatic reconnection to bonded devices (Boolean). */
     const val DEVICE_AUTO_CONNECT = "device_auto_connect"
 }
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/storage/TokenManager.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/storage/TokenManager.kt
index 7d01c7f..4695d0c 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/storage/TokenManager.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/data/storage/TokenManager.kt
@@ -3,10 +3,22 @@ package com.digitoolsolutions.app.torquevaultkmp.data.storage
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.asSharedFlow
 
+/**
+ * Manages authentication tokens and server URL configuration.
+ * 
+ * This class handles token caching, persistence via [AppStorage], and 
+ * notifies the application when the user session has expired.
+ */
 class TokenManager(private val storage: AppStorage) {
+    /**
+     * A flow that emits when the authentication session has expired.
+     */
     private val _sessionExpired = MutableSharedFlow<Unit>(extraBufferCapacity = 1)
     val sessionExpired = _sessionExpired.asSharedFlow()
 
+    /**
+     * Triggers the session expiration event, typically called by a Ktor interceptor.
+     */
     fun triggerSessionExpired() {
         _sessionExpired.tryEmit(Unit)
     }
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/di/Koin.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/di/Koin.kt
index 0a490f8..091fa10 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/di/Koin.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/di/Koin.kt
@@ -3,6 +3,12 @@ package com.digitoolsolutions.app.torquevaultkmp.di
 import org.koin.core.context.startKoin
 import org.koin.dsl.KoinAppDeclaration
 
+/**
+ * Initializes the Koin dependency injection framework.
+ * 
+ * This function is called from both Android and iOS entry points to
+ * set up the shared and platform-specific modules.
+ */
 fun initKoin(config: KoinAppDeclaration? = null) {
      startKoin {
         config?.invoke(this)
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/di/Modules.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/di/Modules.kt
index ca05c84..bbb6b3b 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/di/Modules.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/di/Modules.kt
@@ -25,14 +25,23 @@ import org.koin.core.module.dsl.singleOf
 import org.koin.core.qualifier.named
 import org.koin.dsl.module
 
+/**
+ * Platform-specific module to be provided by each target (Android, iOS).
+ */
 expect val platformModule: Module
 
+/**
+ * Shared application module providing core utility classes.
+ */
 val appModule = module {
     // TokenManager use AppStorage
     single { TokenManager(get()) }
     singleOf(::BleManager)
 }
 
+/**
+ * Shared storage module providing database, repositories, and local persistence logic.
+ */
 val storageModule = module {
     single { AppDatabase(get()) }
     single { get<AppDatabase>().appDatabaseQueries }
@@ -41,6 +50,9 @@ val storageModule = module {
     single { ScannerRepository(get()) }
 }
 
+/**
+ * Shared network module providing Ktor clients, API services, and network-bound repositories.
+ */
 val networkModule = module {
     // Auth client (no interceptor to avoid circular dependency and recursion)
     single(named("authClient")) { createPlatformHttpClient(get(), null) }
@@ -56,6 +68,9 @@ val networkModule = module {
     factory { FetchWorkOrdersUseCase(get()) }
 }
 
+/**
+ * Shared ViewModel module providing state management for the UI screens.
+ */
 val viewModelModule = module {
     factoryOf(::HomeViewModel)
     factory { AuthViewModel(get(), get()) }
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/domain/model/WorkOrder.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/domain/model/WorkOrder.kt
index 72fa20c..98d98ed 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/domain/model/WorkOrder.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/domain/model/WorkOrder.kt
@@ -1,13 +1,21 @@
 package com.digitoolsolutions.app.torquevaultkmp.domain.model
+/**
+ * Mapping of wheel positions to bitmask values for the UART protocol.
+ */
 val wheelsCode = mapOf(
-    "DF" to 0b0001,
-    "PF" to 0b0010,
-    "DR" to 0b0100,
-    "PR" to 0b1000,
-    "DRO" to 0b00010000,
-    "PRO" to 0b100000
+    "DF" to 0b0001,   // Driver Front
+    "PF" to 0b0010,   // Passenger Front
+    "DR" to 0b0100,   // Driver Rear
+    "PR" to 0b1000,   // Passenger Rear
+    "DRO" to 0b00010000, // Driver Rear Outer
+    "PRO" to 0b100000    // Passenger Rear Outer
 )
 
+/**
+ * Computes a bitmask representing the wheels and the number of nuts for the protocol.
+ * The resulting 16-bit integer contains the wheel mask in the upper 8 bits
+ * and the nut count in the lower 8 bits.
+ */
 fun WorkOrder.computeWheelsNuts(): Int {
     var wNut = 0
     var nutCount = 0
@@ -22,6 +30,9 @@ fun WorkOrder.computeWheelsNuts(): Int {
     return (wNut shl 8) or nutCount
 }
 
+/**
+ * Domain model representing a Work Order.
+ */
 data class WorkOrder(
     val id: String,
     val status: String,
@@ -35,6 +46,10 @@ data class WorkOrder(
     val createdAt: String,
     val updatedAt: String?
 )
+
+/**
+ * Details of a service requested within a [WorkOrder], specifically for torque tasks.
+ */
 data class Service(
     val nut: Int?,
     val status: Int,
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/domain/usecase/FetchWorkOrdersUseCase.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/domain/usecase/FetchWorkOrdersUseCase.kt
index 7285164..0fafe2e 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/domain/usecase/FetchWorkOrdersUseCase.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/domain/usecase/FetchWorkOrdersUseCase.kt
@@ -3,7 +3,17 @@ package com.digitoolsolutions.app.torquevaultkmp.domain.usecase
 import com.digitoolsolutions.app.torquevaultkmp.data.repository.WorkOrderRepository
 import com.digitoolsolutions.app.torquevaultkmp.domain.model.WorkOrder
 
+/**
+ * Use case responsible for retrieving work orders from the repository.
+ */
 class FetchWorkOrdersUseCase(private val repository: WorkOrderRepository) {
+    /**
+     * Executes the use case to fetch work orders.
+     * 
+     * @param page Current page index (for pagination).
+     * @param woId Pivot work order identifier for cursor-based navigation.
+     * @param action Navigation direction: "next" or "back".
+     */
     suspend operator fun invoke(page: Int, woId: String = "0", action: String = "next"): List<WorkOrder> {
         return repository.fetchAbleWorkOrders(woId, action)
     }
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/kable/BleManager.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/kable/BleManager.kt
index 8f7a186..a20fdc7 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/kable/BleManager.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/kable/BleManager.kt
@@ -15,11 +15,22 @@ import kotlin.uuid.ExperimentalUuidApi
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 
+/**
+ * A wrapper around the Kable library to handle Bluetooth Low Energy operations.
+ * 
+ * This manager provides high-level abstractions for scanning, connecting, and 
+ * communicating with digital torque devices using a custom UART protocol.
+ */
 @OptIn(ExperimentalUuidApi::class)
 class BleManager {
     companion object {
+        /** The primary Service UUID for the torque device UART protocol. */
         val SERVICE_UUID = Uuid.parse("6E400001-B5A3-F393-E0A9-E50E24DCCA9E")
+        
+        /** The characteristic used to send commands to the device. */
         val RX_CHAR = characteristicOf(SERVICE_UUID, Uuid.parse("6E400002-B5A3-F393-E0A9-E50E24DCCA9E"))
+        
+        /** The characteristic used to receive data from the device. */
         val TX_CHAR = characteristicOf(SERVICE_UUID, Uuid.parse("6E400003-B5A3-F393-E0A9-E50E24DCCA9E"))
     }
 
@@ -31,6 +42,11 @@ class BleManager {
     fun getAdvertisement(identifier: String): Advertisement? = advertisements[identifier]
     fun getAdvertisementName(identifier: String): String = advertisements[identifier]?.name.toString()
 
+    /**
+     * Scans for nearby torque devices that support the [SERVICE_UUID].
+     * 
+     * @return A flow of [Advertisement] discovered during the scan.
+     */
     fun scanDevices(): Flow<Advertisement> = Scanner {
         filters {
             match {
@@ -47,6 +63,12 @@ class BleManager {
         it
     }
 
+    /**
+     * Establishes a connection to a specific peripheral.
+     * 
+     * @param advertisement The advertisement discovered during scanning.
+     * @return A [Peripheral] instance for further interaction.
+     */
     suspend fun connect(advertisement: Advertisement): Peripheral {
         val identifier = advertisement.identifier.toString()
         Napier.d(">>>>> Connecting to $identifier")
@@ -57,23 +79,37 @@ class BleManager {
         }
     }
 
+    /**
+     * Disconnects a peripheral by its identifier.
+     */
     suspend fun disconnect(identifier: String) {
         mutex.withLock {
             peripherals.remove(identifier)?.disconnect()
         }
     }
 
+    /**
+     * Disconnects all currently active BLE connections.
+     */
     suspend fun disconnectAll() {
         mutex.withLock {
             peripherals.values.forEach { it.disconnect() }
             peripherals.clear()
         }
     }
+
+    /**
+     * Sends a UART command string to the connected peripheral.
+     */
     suspend fun sendCommand(peripheral: Peripheral, command: String) {
         Napier.d(">>>>> Sent to uart: $command")
         val cmd = command.replace("\\n", "\n")
         peripheral.write(RX_CHAR, cmd.encodeToByteArray())
     }
+
+    /**
+     * Returns a flow that emits incoming UART data from the peripheral.
+     */
     fun observeRx(peripheral: Peripheral): Flow<String> =
         peripheral.observe(TX_CHAR).map { it.decodeToString() }
 }
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/Destination.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/Destination.kt
index 2ddb152..5b4d7c5 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/Destination.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/Destination.kt
@@ -3,13 +3,24 @@ package com.digitoolsolutions.app.torquevaultkmp.screens
 import androidx.compose.ui.graphics.vector.ImageVector
 import org.jetbrains.compose.resources.DrawableResource
 
+/**
+ * Wrapper for different types of icons used in the navigation system.
+ */
 sealed class AppIcon {
+    /** Uses a compiled Compose Multiplatform resource. */
     data class Resource(val resId: DrawableResource) : AppIcon()
+    
+    /** Uses a standard Material [ImageVector]. */
     data class Vector(val imageVector: ImageVector) : AppIcon()
 }
 
+/**
+ * Base class for all navigation destinations within the app.
+ * 
+ * Each destination defines its display [label], associated [icon], and unique [route].
+ */
 open class Destinations(
     val label: String,
     val icon: AppIcon,
     val route: String = label.lowercase().replace(" ", "_")
-)
\ No newline at end of file
+)
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/auth/AuthViewModel.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/auth/AuthViewModel.kt
index 8aafa3d..2741061 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/auth/AuthViewModel.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/auth/AuthViewModel.kt
@@ -8,6 +8,9 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
 
+/**
+ * Represents the state of the login process.
+ */
 sealed class LoginUiState {
     object Idle : LoginUiState()
     object Loading : LoginUiState()
@@ -15,21 +18,39 @@ sealed class LoginUiState {
     data class Error(val message: String) : LoginUiState()
 }
 
+/**
+ * ViewModel for the Login screen.
+ * 
+ * Handles user authentication and server URL configuration during the login process.
+ */
 class AuthViewModel(
     private val authApi: AuthApi,
     private val tokenManager: TokenManager
 ) : ViewModel() {
 
+    /**
+     * Observable state of the login operation.
+     */
     private val _loginState = MutableStateFlow<LoginUiState>(LoginUiState.Idle)
     val loginState = _loginState.asStateFlow()
 
+    /**
+     * The current server URL entered by the user or loaded from storage.
+     */
     private val _serverUrl = MutableStateFlow(tokenManager.getBaseUrl() ?: "http://digitoolsolutions.synology.me:3000")
     val serverUrl = _serverUrl.asStateFlow()
 
+    /**
+     * Updates the server URL in the UI state.
+     */
     fun onChangeServerUrl(url: String) {
         _serverUrl.value = url
     }
 
+    /**
+     * Attempts to log in the user with the provided credentials.
+     * Before logging in, it saves the current [serverUrl] to [TokenManager].
+     */
     fun login(username: String, password: String) {
         viewModelScope.launch {
             _loginState.value = LoginUiState.Loading
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/auth/LoginScreen.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/auth/LoginScreen.kt
index eac16a6..486d4f1 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/auth/LoginScreen.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/auth/LoginScreen.kt
@@ -68,6 +68,9 @@ import torquevaultkmp.composeapp.generated.resources.lbl_server_url
 import torquevaultkmp.composeapp.generated.resources.lbl_username
 import torquevaultkmp.composeapp.generated.resources.server_url_placeholder
 
+/**
+ * Screen for user authentication.
+ */
 @Composable
 fun LoginScreen(
     navController: NavController
@@ -92,6 +95,9 @@ fun LoginScreen(
     )
 }
 
+/**
+ * Stateless UI content for the login screen.
+ */
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun LoginScreenContent(
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/bonded/BondedViewModel.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/bonded/BondedViewModel.kt
index 0c5b4e9..b36f8cd 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/bonded/BondedViewModel.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/bonded/BondedViewModel.kt
@@ -10,16 +10,27 @@ import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
 import kotlin.random.Random
 
+/**
+ * ViewModel for the Bonded Devices screen.
+ * 
+ * Manages the list of devices that have been previously connected and saved 
+ * to the local database, supporting cursor-based pagination.
+ */
 class BondedViewModel(
     private val deviceRepository: DeviceRepository
 ) : ViewModel() {
 
+    /**
+     * Observable list of bonded devices.
+     */
     private val _bondedDevices = MutableStateFlow<List<Device>>(emptyList())
     val bondedDevices: StateFlow<List<Device>> = _bondedDevices.asStateFlow()
 
     private var lastId: String? = null
     private val pageSize = DeviceRepository.PAGE_SIZE
     private var isLastPage = false
+    
+    /** Indicates if a background data fetch is currently in progress. */
     var isLoading = MutableStateFlow(false)
         private set
 
@@ -27,6 +38,9 @@ class BondedViewModel(
         loadNextPage()
     }
 
+    /**
+     * Fetches the next page of bonded devices from the database.
+     */
     fun loadNextPage() {
         if (isLoading.value || isLastPage) return
 
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/communication/UartCommunicationScreen.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/communication/UartCommunicationScreen.kt
index 343246d..9877d8e 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/communication/UartCommunicationScreen.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/communication/UartCommunicationScreen.kt
@@ -27,6 +27,12 @@ import torquevaultkmp.composeapp.generated.resources.Res
 import torquevaultkmp.composeapp.generated.resources.action_cancel
 import torquevaultkmp.composeapp.generated.resources.action_retry
 
+/**
+ * Screen responsible for real-time UART communication with a connected BLE device.
+ * 
+ * It manages different UI states based on the connection status (Connecting, Connected, Disconnected)
+ * and provides a terminal-like interface for sending and receiving messages.
+ */
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun UartCommunicationScreen(
@@ -122,4 +128,4 @@ fun UartCommunicationScreen(
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/home/HomeScreen.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/home/HomeScreen.kt
index 36747e1..58149d5 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/home/HomeScreen.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/home/HomeScreen.kt
@@ -29,6 +29,11 @@ import torquevaultkmp.composeapp.generated.resources.Res
 import torquevaultkmp.composeapp.generated.resources.home_title
 import kotlin.uuid.ExperimentalUuidApi
 
+/**
+ * The landing screen after a successful login.
+ * 
+ * Displays currently connected devices and provides a gateway to communicate with them.
+ */
 @OptIn(ExperimentalMaterial3Api::class, ExperimentalUuidApi::class)
 @Composable
 fun HomeScreen(
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/home/HomeViewModel.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/home/HomeViewModel.kt
index 9035ed2..7508d95 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/home/HomeViewModel.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/home/HomeViewModel.kt
@@ -12,11 +12,24 @@ import kotlinx.coroutines.flow.asSharedFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
 
+/**
+ * ViewModel for the Home Screen.
+ * 
+ * Manages the fetching and display of the list of work orders available
+ * for processing.
+ */
 class HomeViewModel(
     private val fetchWorkOrdersUseCase: FetchWorkOrdersUseCase
 ): ViewModel() {
+    /**
+     * Observable list of work orders.
+     */
     private val _workOrders = MutableStateFlow<List<WorkOrder>>(emptyList())
     val workOrders = _workOrders.asStateFlow()
+
+    /**
+     * Loads the initial page of work orders.
+     */
     fun loadWorkOrders() {
         viewModelScope.launch {
             try {
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/logs/LogScreen.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/logs/LogScreen.kt
index daaa9a5..c5e6031 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/logs/LogScreen.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/logs/LogScreen.kt
@@ -62,6 +62,12 @@ import org.koin.compose.viewmodel.koinViewModel
 import torquevaultkmp.composeapp.generated.resources.Res
 import torquevaultkmp.composeapp.generated.resources.log_title
 
+/**
+ * Screen used to view, filter, and export diagnostic logs.
+ * 
+ * Logs are displayed in chronological order (newest first) and can be filtered by source 
+ * (System or specific Device). Users can also export logs as Plain Text or CSV files.
+ */
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun LogScreen(
@@ -80,6 +86,9 @@ fun LogScreen(
     )
 }
 
+/**
+ * Stateless UI content for the diagnostic logs screen.
+ */
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 internal fun LogContent(
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/requirement/RequirementWrapper.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/requirement/RequirementWrapper.kt
index 58f42cd..24f50c4 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/requirement/RequirementWrapper.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/requirement/RequirementWrapper.kt
@@ -29,15 +29,27 @@ import com.digitoolsolutions.app.torquevaultkmp.utils.NetworkStatus
 import com.digitoolsolutions.app.torquevaultkmp.utils.PermissionHandler
 import org.koin.compose.koinInject
 
+/**
+ * Data class representing the current state of system requirements.
+ */
 data class Requirements(
+    /** Whether the device supports Bluetooth Low Energy. */
     val hasBleFeature: Boolean,
+    /** Whether Bluetooth is currently turned on. */
     val isEnabled: Boolean,
+    /** Whether the app has been granted necessary Bluetooth/Location permissions. */
     val hasPermission: Boolean,
+    /** Whether the user has permanently denied the required permissions. */
     val hasPermanentlyDenied: Boolean,
+    /** Whether Location services are enabled (required for BLE on some Android versions). */
     val isLocationEnabled: Boolean,
+    /** Whether the device has active internet connectivity. */
     val networkAvailable: Boolean,
 )
 
+/**
+ * Sealed class representing the mutually exclusive states of requirement fulfillment.
+ */
 sealed class RequirementState {
     object BleUnsupported : RequirementState()
     object BluetoothDisabled : RequirementState()
@@ -48,6 +60,9 @@ sealed class RequirementState {
     object Ready : RequirementState()
 }
 
+/**
+ * Maps the raw [Requirements] data into a simplified [RequirementState].
+ */
 fun Requirements.toState(): RequirementState {
     return when {
         !hasBleFeature -> RequirementState.BleUnsupported
@@ -64,6 +79,16 @@ fun Requirements.toState(): RequirementState {
         else -> RequirementState.Ready
     }
 }
+/**
+ * A wrapper component that ensures all system requirements (BLE, Permissions, Location, Network)
+ * are met before allowing interaction with the main application content.
+ * 
+ * It displays an overlay if any requirement is missing and provides actions to resolve them.
+ * 
+ * @param onReady Callback triggered when all requirements are satisfied.
+ * @param onPause Callback triggered when a requirement is lost.
+ * @param content The main application content to be displayed (usually behind the requirement overlay).
+ */
 @Composable
 fun RequirementWrapper(
     onReady: () -> Unit,
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/scanner/ScannerScreen.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/scanner/ScannerScreen.kt
index a9d52c0..d80e4fd 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/scanner/ScannerScreen.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/scanner/ScannerScreen.kt
@@ -33,6 +33,12 @@ import torquevaultkmp.composeapp.generated.resources.scan_empty_title
 import torquevaultkmp.composeapp.generated.resources.scanner_title
 import kotlin.uuid.ExperimentalUuidApi
 
+/**
+ * Screen used to discover nearby Bluetooth Low Energy devices.
+ * 
+ * Users can initiate scans, view a list of found devices with their signal strength (RSSI),
+ * and tap on a device to connect or navigate to its communication interface.
+ */
 @OptIn(ExperimentalMaterial3Api::class, ExperimentalUuidApi::class)
 @Composable
 fun ScannerScreen(
@@ -113,12 +119,11 @@ fun ScannerScreen(
             }
         }
     }
-
-//    LaunchedEffect(Unit) {
-//        viewModel.startScan()
-//    }
 }
 
+/**
+ * A list item representing a discovered Bluetooth device.
+ */
 @OptIn(ExperimentalUuidApi::class)
 @Composable
 fun DeviceListItem(
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/scanner/ScannerViewModel.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/scanner/ScannerViewModel.kt
index efce7d5..73e34b9 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/scanner/ScannerViewModel.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/scanner/ScannerViewModel.kt
@@ -111,8 +111,14 @@ class ScannerViewModel(
     private var stabilized = false
 
     /**
-     * Record advertisement: collect (20 times) intervals between consecutive ads
-     * to calibrate the cleanup expiration time when a device stops advertising.
+     * Records advertisement intervals to calibrate the cleanup expiration time.
+     * 
+     * Digital torque wrenches may have different advertising intervals. By observing the
+     * time delta between consecutive advertisements, the app calculates a dynamic 
+     * [ADV_EXPIRATION_TIME]. This ensures that when a device stops advertising, 
+     * it is removed from the list promptly but without flickering.
+     * 
+     * Calibration stabilizes after collecting 20 samples from a single device.
      */
     private fun calibrateCleanupTime(deviceId: String, now: TimeMark) {
         if (stabilized) return
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/settings/SettingViewModel.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/settings/SettingViewModel.kt
index a72ae6e..43ddb28 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/settings/SettingViewModel.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/settings/SettingViewModel.kt
@@ -9,36 +9,60 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
 
+/**
+ * ViewModel for the Settings screen.
+ * 
+ * Allows users to configure application-wide preferences such as server URL,
+ * authentication tokens, and automatic reconnection settings.
+ */
 class SettingViewModel(
     private val tokenManager: TokenManager,
     private val storage: AppStorage
 ) : ViewModel() {
+    /** The base server URL. */
     private val _serverUrl = MutableStateFlow(tokenManager.getBaseUrl() ?: "")
     val serverUrl: StateFlow<String> = _serverUrl.asStateFlow()
 
+    /** The current refresh token. */
     private val _refreshToken = MutableStateFlow(tokenManager.getRefreshToken() ?: "")
     val refreshToken: StateFlow<String> = _refreshToken.asStateFlow()
 
+    /** Whether the app should automatically attempt to connect to known devices. */
     private val _autoConnect = MutableStateFlow(storage.load<Boolean>(ReferKeys.DEVICE_AUTO_CONNECT) ?: false)
     val autoConnect: StateFlow<Boolean> = _autoConnect.asStateFlow()
 
+    /**
+     * Updates the server URL in the UI state.
+     */
     fun updateServerUrl(url: String) {
         _serverUrl.value = url
     }
 
+    /**
+     * Updates the refresh token in the UI state.
+     */
     fun updateRefreshToken(token: String) {
         _refreshToken.value = token
     }
 
+    /**
+     * Persists the current server URL and tokens to storage.
+     */
     fun saveSettings() {
         tokenManager.saveServerUrl(_serverUrl.value)
         tokenManager.saveTokens("", _refreshToken.value)
     }
 
+    /**
+     * Clears all authentication tokens and logs the user out.
+     */
     fun logout() {
         tokenManager.clearTokens()
     }
 
+    /**
+     * Updates the auto-connect preference and persists it.
+     */
     fun updateAutoConnect(enabled: Boolean) {
         _autoConnect.value = enabled
         storage.save(ReferKeys.DEVICE_AUTO_CONNECT, enabled)
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/ApiException.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/ApiException.kt
index 3418223..1a2231f 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/ApiException.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/ApiException.kt
@@ -2,10 +2,23 @@ package com.digitoolsolutions.app.torquevaultkmp.utils
 
 import io.ktor.http.HttpStatusCode
 
+/**
+ * Exception thrown when a remote API request fails with a non-success status code.
+ * 
+ * @property status The HTTP status code returned by the server.
+ * @property body The raw response body containing error details.
+ */
 class ApiException(val status: HttpStatusCode, val body: String) : Exception(
     "API error ${status.value}: $body"
 )
 
+/**
+ * Exception used internally to trigger a token refresh and request retry.
+ */
 class RetryWithNewTokenException : Exception(">>>>> Access token expired, retry with new token")
-class ForceLogoutException : Exception(">>>>> Refresh token expired, force logout")
 
+/**
+ * Exception used to signal that both access and refresh tokens are invalid, 
+ * requiring the user to re-authenticate.
+ */
+class ForceLogoutException : Exception(">>>>> Refresh token expired, force logout")
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/AppInfo.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/AppInfo.kt
index 897b0a7..279230a 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/AppInfo.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/AppInfo.kt
@@ -1,5 +1,11 @@
 package com.digitoolsolutions.app.torquevaultkmp.utils
 
+/**
+ * Interface providing basic application metadata.
+ */
 interface AppInfo {
+    /**
+     * The human-readable version name of the application (e.g., "1.0.2").
+     */
     val version: String?
-}
\ No newline at end of file
+}
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/BluetoothManager.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/BluetoothManager.kt
index d177489..f3d5f93 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/BluetoothManager.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/BluetoothManager.kt
@@ -2,14 +2,42 @@ package com.digitoolsolutions.app.torquevaultkmp.utils
 
 import kotlinx.coroutines.flow.StateFlow
 
+/**
+ * Interface defining the platform-specific operations for managing Bluetooth state and permissions.
+ */
 interface BluetoothManager {
+    /**
+     * Observable state indicating if Bluetooth is currently enabled on the device.
+     */
     val isBluetoothEnabled: StateFlow<Boolean>
+
+    /**
+     * Observable state indicating if the app has the necessary Bluetooth permissions.
+     */
     val hasBluetoothPermission: StateFlow<Boolean>
 
+    /**
+     * Triggers a check of the current Bluetooth hardware state.
+     */
     fun checkBluetoothState()
+
+    /**
+     * Triggers a check of the current Bluetooth permission status.
+     */
     fun checkBluetoothPermission()
+
+    /**
+     * Opens the system settings for the application, allowing the user to grant permissions.
+     */
     fun openSettings()
+
+    /**
+     * Requests the user to enable Bluetooth if it is currently disabled.
+     */
     fun enableBluetooth()
 }
 
+/**
+ * Factory function to create a platform-specific [BluetoothManager].
+ */
 expect fun createBluetoothManager(): BluetoothManager
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/Helper.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/Helper.kt
index 27b7c41..c6d826d 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/Helper.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/Helper.kt
@@ -1,16 +1,28 @@
 package com.digitoolsolutions.app.torquevaultkmp.utils
 
+/**
+ * Utility object containing protocol constants and helper functions for 
+ * decoding and encoding data exchanged with torque devices.
+ */
 object Helper {
     const val START_CHARACTER ="$"
     const val END_LINE_FEED = "#\n"
     const val SECURITY_CRC16 = "00cr16"
-    const val CMD_EMPTY_WO = "START_WO;empty\n$SECURITY_CRC16"
+    
+    /** Command sent to indicate no work orders are available. */
+    const val CMD_EMPTY_WO = "START_WO;empty"
     const val WO_RES = "WO_RES"
-    val CMD_RES_OK: (String) -> String = { cmd -> "$cmd;OK\n$SECURITY_CRC16" }
-    val CMD_RES_NG: (String) -> String = { cmd -> "$cmd;NG\n$SECURITY_CRC16" }
+    
+    /** Generates a success response for a specific command. */
+    val CMD_RES_OK: (String) -> String = { cmd -> "$cmd;OK" }
+    
+    /** Generates a failure response for a specific command. */
+    val CMD_RES_NG: (String) -> String = { cmd -> "$cmd;NG" }
 
     const val BLE_NUTS_POS = 2
     const val BLE_TORQUE_POS = BLE_NUTS_POS + 1
+
+    /** Commands recognized by the torque device protocol. */
     enum class Command {
         START_WO,
         NEXT_WO,
@@ -22,6 +34,8 @@ object Helper {
                 try { valueOf(code) } catch (e: IllegalArgumentException) { null }
         }
     }
+
+    /** Categories of devices supported by the protocol. */
     enum class TypeOfDevice(val code: Int) {
         WHEEL(0),
         OIL_FILTER(1),
@@ -36,11 +50,17 @@ object Helper {
             }
         }
     }
+
+    /** Action codes sent by the device during the finish workflow. */
     object TorqueAction {
         const val TORQUE = "0"
         const val RE_TORQUE = "1"
         const val CANCEL = "2"
     }
+
+    /** 
+     * Represents a decoded message received from a torque device. 
+     */
     data class RxMessage(
         val command: String,
         val type: String, // Type of device
@@ -49,12 +69,24 @@ object Helper {
         val securityCode: String,
         val crc16: String
     )
+
+    /**
+     * Wraps a command string with the protocol's start, security, crc16 and end characters.
+     */
     fun buildUartCommand(cmd: String): String {
-        return "$START_CHARACTER$cmd$END_LINE_FEED"
+        return "$START_CHARACTER$cmd\n$SECURITY_CRC16$END_LINE_FEED"
     }
+
+    /**
+     * Decodes a raw string message received from the device into an [RxMessage].
+     * 
+     * The protocol format is: $COMMAND;TYPE;[WOID;DATA...]\nSECURITYCRC#\n
+     * 
+     * @return The decoded message or null if the format is invalid.
+     */
     fun decodeRxData(msg: String): RxMessage? {
         /** Check header and footer*/
-        if (!msg.startsWith("$") && !msg.endsWith("#\n")) return null
+        if (!msg.startsWith("$") || !msg.endsWith("#\n")) return null
         /** Remove $ and trim end */
         val payload = msg.drop(1).trimEnd('*', '#',' ', '\r', '\n')
         val parts = payload.split(";", limit = 3)
@@ -75,6 +107,13 @@ object Helper {
         return RxMessage(cmd, type, woId, data, security, crc16)
     }
 
+    /**
+     * Parses the torque result data for multiple wheels and nuts.
+     * 
+     * @param torqueData List of strings containing wheel names followed by nut torque values.
+     * @param nutsPerWheel The expected number of nuts for each wheel.
+     * @return A map where keys are wheel identifiers and values are lists of torque measurements.
+     */
     fun parseWheelTorqueData(torqueData: List<String>, nutsPerWheel: Int): Map<String, List<Double>> {
         val result = mutableMapOf<String, List<Double>>()
         var i = 0
@@ -93,6 +132,10 @@ object Helper {
         }
         return result
     }
+
+    /**
+     * Standardizes device identifiers (MAC addresses or UUIDs) for display.
+     */
     fun formatDeviceId(deviceId: String?): String {
         if(deviceId == null) return ""
         return if (deviceId.contains(":")) {
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/NetworkMonitor.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/NetworkMonitor.kt
index 824e9eb..71574d0 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/NetworkMonitor.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/NetworkMonitor.kt
@@ -2,12 +2,29 @@ package com.digitoolsolutions.app.torquevaultkmp.utils
 
 import kotlinx.coroutines.flow.StateFlow
 
+/**
+ * Represents the connectivity status of the device.
+ */
 enum class NetworkStatus {
     Available, Unavailable
 }
 
+/**
+ * Interface for monitoring real-time network connectivity changes.
+ */
 interface NetworkMonitor {
+    /**
+     * Observable stream of the current [NetworkStatus].
+     */
     val status: StateFlow<NetworkStatus>
+
+    /**
+     * Starts the network monitoring process.
+     */
     fun start()
+
+    /**
+     * Stops the network monitoring process.
+     */
     fun stop()
-}
\ No newline at end of file
+}
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/NoOpAntilog.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/NoOpAntilog.kt
index 5ecb272..8979a19 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/NoOpAntilog.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/NoOpAntilog.kt
@@ -3,7 +3,11 @@ package com.digitoolsolutions.app.torquevaultkmp.utils
 import io.github.aakira.napier.Antilog
 import io.github.aakira.napier.LogLevel
 
+/**
+ * A silent logger implementation for Napier that discards all log messages.
+ * Used in production builds or specific scenarios where console logging is not desired.
+ */
 class NoOpAntilog : Antilog() {
     override fun isEnable(priority: LogLevel, tag: String?): Boolean = false
     override fun performLog(priority: LogLevel, tag: String?, throwable: Throwable?, message: String?) {}
-}
\ No newline at end of file
+}
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/PermissionHandler.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/PermissionHandler.kt
index 9b3df51..09857f5 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/PermissionHandler.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/PermissionHandler.kt
@@ -3,14 +3,40 @@ package com.digitoolsolutions.app.torquevaultkmp.utils
 import androidx.compose.runtime.Composable
 import kotlinx.coroutines.flow.StateFlow
 
+/**
+ * Interface defining platform-specific logic for handling runtime permissions and hardware features.
+ */
 interface PermissionHandler {
+    /**
+     * Composable function that encapsulates the logic for requesting permissions.
+     * 
+     * @param onPermissionResult Callback invoked with `true` if permissions were permanently denied.
+     * @param content Composable providing a function to trigger the permission request.
+     */
     @Composable
     fun HandlePermissionRequest(
         onPermissionResult: (Boolean) -> Unit,
         content: @Composable (requestPermissions: () -> Unit) -> Unit
     )
+
+    /**
+     * Indicates if the device hardware supports Bluetooth Low Energy.
+     */
     val hasBleFeature: Boolean
+
+    /**
+     * Observable state indicating if Location services are currently enabled.
+     * (Location is often a prerequisite for BLE scanning on Android).
+     */
     val isLocationEnabled: StateFlow<Boolean>
+
+    /**
+     * Requests the user to enable Location services.
+     */
     fun enableLocation()
+
+    /**
+     * Triggers a check of the current Location service state.
+     */
     fun checkLocationState()
 }
diff --git a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/ShareLog.kt b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/ShareLog.kt
index 7fa271f..e16693f 100644
--- a/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/ShareLog.kt
+++ b/composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/ShareLog.kt
@@ -1,6 +1,16 @@
 package com.digitoolsolutions.app.torquevaultkmp.utils
 
+/**
+ * Interface defining platform-specific logic for sharing log files.
+ */
 interface ShareLog {
+    /**
+     * Exports and shares the provided [content] as a plain text file.
+     */
     fun exportTextFile(content: String)
+
+    /**
+     * Exports and shares the provided [content] as a CSV file.
+     */
     fun exportCSVFile(content: String)
-}
\ No newline at end of file
+}
diff --git a/composeApp/src/iosMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/BluetoothManager.ios.kt b/composeApp/src/iosMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/BluetoothManager.ios.kt
index 0e60641..ee89b28 100644
--- a/composeApp/src/iosMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/BluetoothManager.ios.kt
+++ b/composeApp/src/iosMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/utils/BluetoothManager.ios.kt
@@ -10,6 +10,12 @@ import platform.darwin.NSObject
 import platform.darwin.dispatch_async
 import platform.darwin.dispatch_get_main_queue
 
+/**
+ * iOS implementation of [BluetoothManager] using CoreBluetooth.
+ * 
+ * This class monitors the CBCentralManager state to track Bluetooth availability
+ * and manages permission status on iOS devices.
+ */
 class IosBluetoothManager : BluetoothManager {
     private val _isBluetoothEnabled = MutableStateFlow(false)
     override val isBluetoothEnabled: StateFlow<Boolean> = _isBluetoothEnabled.asStateFlow()