Refactor: Use Gradle version catalog

This commit introduces the Gradle version catalog (`libs.versions.toml`) to manage dependencies and plugin versions centrally.

Key changes:
- Added `gradle/libs.versions.toml` defining versions, libraries, plugins, and bundles.
- Updated `app/build.gradle.kts` to reference dependencies and plugins from the version catalog.
- Updated project-level `build.gradle.kts` to use plugin aliases from the version catalog.

gradle/libs.versions.toml

@@ -0,0 +1,137 @@
+[versions]
+# Android and Kotlin
+agp = "8.2.0"
+kotlin = "1.9.20"
+compileSdk = "34"
+minSdk = "26" # API 26 for proper BLE support
+targetSdk = "34"
+
+# AndroidX Core
+core-ktx = "1.12.0"
+lifecycle-runtime = "2.7.0"
+activity-compose = "1.8.2"
+appcompat = "1.6.1"
+
+# Compose
+compose-bom = "2023.10.01"
+compose-compiler = "1.5.5"
+
+# Navigation
+navigation-compose = "2.7.6"
+
+# Accompanist
+accompanist-permissions = "0.32.0"
+
+# Cryptography
+bouncycastle = "1.70"
+tink-android = "1.10.0"
+
+# JSON
+gson = "2.10.1"
+
+# Coroutines
+kotlinx-coroutines = "1.7.3"
+
+# Bluetooth
+nordic-ble = "2.6.1"
+
+# Compression
+lz4-java = "1.8.0"
+
+# Security
+security-crypto = "1.1.0-alpha06"
+
+# Testing
+junit = "4.13.2"
+androidx-test-ext = "1.1.5"
+espresso = "3.5.1"
+
+[libraries]
+# AndroidX Core
+androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "core-ktx" }
+androidx-lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycle-runtime" }
+androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activity-compose" }
+androidx-appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "appcompat" }
+
+# Compose
+androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "compose-bom" }
+androidx-compose-ui = { group = "androidx.compose.ui", name = "ui" }
+androidx-compose-ui-graphics = { group = "androidx.compose.ui", name = "ui-graphics" }
+androidx-compose-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" }
+androidx-compose-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" }
+androidx-compose-material3 = { group = "androidx.compose.material3", name = "material3" }
+androidx-compose-runtime = { group = "androidx.compose.runtime", name = "runtime" }
+androidx-compose-runtime-livedata = { group = "androidx.compose.runtime", name = "runtime-livedata" }
+
+# Lifecycle
+androidx-lifecycle-viewmodel-compose = { group = "androidx.lifecycle", name = "lifecycle-viewmodel-compose", version.ref = "lifecycle-runtime" }
+androidx-lifecycle-livedata-ktx = { group = "androidx.lifecycle", name = "lifecycle-livedata-ktx", version.ref = "lifecycle-runtime" }
+
+# Navigation
+androidx-navigation-compose = { group = "androidx.navigation", name = "navigation-compose", version.ref = "navigation-compose" }
+
+# Accompanist
+accompanist-permissions = { group = "com.google.accompanist", name = "accompanist-permissions", version.ref = "accompanist-permissions" }
+
+# Cryptography
+bouncycastle-bcprov = { group = "org.bouncycastle", name = "bcprov-jdk15on", version.ref = "bouncycastle" }
+google-tink-android = { group = "com.google.crypto.tink", name = "tink-android", version.ref = "tink-android" }
+
+# JSON
+gson = { group = "com.google.code.gson", name = "gson", version.ref = "gson" }
+
+# Coroutines
+kotlinx-coroutines-android = { group = "org.jetbrains.kotlinx", name = "kotlinx-coroutines-android", version.ref = "kotlinx-coroutines" }
+
+# Bluetooth
+nordic-ble = { group = "no.nordicsemi.android", name = "ble", version.ref = "nordic-ble" }
+
+# Compression
+lz4-java = { group = "org.lz4", name = "lz4-java", version.ref = "lz4-java" }
+
+# Security
+androidx-security-crypto = { group = "androidx.security", name = "security-crypto", version.ref = "security-crypto" }
+
+# Testing
+junit = { group = "junit", name = "junit", version.ref = "junit" }
+androidx-test-ext-junit = { group = "androidx.test.ext", name = "junit", version.ref = "androidx-test-ext" }
+androidx-test-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espresso" }
+androidx-compose-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
+androidx-compose-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
+
+[plugins]
+android-application = { id = "com.android.application", version.ref = "agp" }
+android-library = { id = "com.android.library", version.ref = "agp" }
+kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
+kotlin-parcelize = { id = "kotlin-parcelize" }
+
+[bundles]
+compose = [
+    "androidx-compose-ui",
+    "androidx-compose-ui-graphics",
+    "androidx-compose-ui-tooling-preview",
+    "androidx-compose-material3",
+    "androidx-compose-runtime-livedata"
+]
+
+lifecycle = [
+    "androidx-lifecycle-runtime-ktx",
+    "androidx-lifecycle-viewmodel-compose",
+    "androidx-lifecycle-livedata-ktx"
+]
+
+cryptography = [
+    "bouncycastle-bcprov",
+    "google-tink-android"
+]
+
+testing = [
+    "junit",
+    "androidx-test-ext-junit",
+    "androidx-test-espresso-core"
+]
+
+compose-testing = [
+    "androidx-compose-ui-test-junit4",
+    "androidx-compose-ui-test-manifest"
+]