Refactor: Upgrade Coil to v3 and update dependencies

- Upgraded image loading library from Coil 2 to Coil 3, updating related APIs across the app.
- Migrated `viewModel()` to a singleton pattern for `AgentViewModel` to optimize instantiation.
- Updated various dependencies, including Android Gradle Plugin, Kotlin, Compose, and other libraries.
- Upgraded Gradle wrapper to version 8.11.1.
- Removed deprecated `windowInsets` and `animateItemPlacement` parameters in Compose components to align with latest API versions.

app/src/main/java/com/aiosman/ravenow/utils/FileUtil.kt

@@ -4,14 +4,16 @@ import android.content.ContentValues
 import android.content.Context
 import android.database.Cursor
 import android.graphics.Bitmap
-import android.graphics.drawable.BitmapDrawable
 import android.net.Uri
 import android.os.Build
 import android.os.Environment
 import android.provider.MediaStore
 import android.widget.Toast
-import coil.request.ImageRequest
-import coil.request.SuccessResult
+import androidx.core.graphics.drawable.toBitmap
+import coil3.asDrawable
+import coil3.request.ImageRequest
+import coil3.request.SuccessResult
+import coil3.request.allowHardware
 import com.aiosman.ravenow.utils.Utils.getImageLoader
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
@@ -30,8 +32,9 @@ object FileUtil {
             .allowHardware(false) // Disable hardware bitmaps.
             .build()
 
-        val result = (loader.execute(request) as SuccessResult).drawable
-        val bitmap = (result as BitmapDrawable).bitmap
+        val result = loader.execute(request) as? SuccessResult ?: return
+        val drawable = result.image.asDrawable(context.resources)
+        val bitmap = drawable.toBitmap()
 
         val contentValues = ContentValues().apply {
             put(MediaStore.Images.Media.DISPLAY_NAME, "image_${System.currentTimeMillis()}.jpg")

app/src/main/java/com/aiosman/ravenow/utils/Utils.kt

@@ -4,8 +4,9 @@ import android.content.Context
 import android.graphics.Bitmap
 import android.graphics.BitmapFactory
 import android.net.Uri
-import coil.ImageLoader
-import coil.request.CachePolicy
+import coil3.ImageLoader
+import coil3.network.okhttp.OkHttpNetworkFetcherFactory
+import coil3.request.CachePolicy
 import com.aiosman.ravenow.data.api.AuthInterceptor
 import com.aiosman.ravenow.data.api.getSafeOkHttpClient
 import java.io.File
@@ -32,7 +33,15 @@ object Utils {
 
         val okHttpClient = getSafeOkHttpClient(authInterceptor = AuthInterceptor())
         val loader = ImageLoader.Builder(appContext)
-            .okHttpClient(okHttpClient)
+            .components {
+                add(
+                    OkHttpNetworkFetcherFactory(
+                        callFactory = {
+                            okHttpClient
+                        }
+                    )
+                )
+            }
             .memoryCachePolicy(CachePolicy.ENABLED)
             .diskCachePolicy(CachePolicy.ENABLED)
             .build()