Add sticker specific restore flow and fix archive related sticker bugs.

app/src/main/java/org/thoughtcrime/securesms/attachments/LocalStickerAttachment.kt

@@ -0,0 +1,78 @@
+/*
+ * Copyright 2025 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.attachments
+
+import android.net.Uri
+import android.os.Parcel
+import androidx.core.os.ParcelCompat
+import org.thoughtcrime.securesms.database.AttachmentTable
+import org.thoughtcrime.securesms.database.model.StickerRecord
+import org.thoughtcrime.securesms.mms.StickerSlide
+import org.thoughtcrime.securesms.stickers.StickerLocator
+import java.security.SecureRandom
+
+/**
+ * An incoming sticker that is already available locally via an installed sticker pack.
+ */
+class LocalStickerAttachment : Attachment {
+
+  constructor(
+    stickerRecord: StickerRecord,
+    stickerLocator: StickerLocator
+  ) : super(
+    contentType = stickerRecord.contentType,
+    transferState = AttachmentTable.TRANSFER_PROGRESS_DONE,
+    size = stickerRecord.size,
+    fileName = null,
+    cdn = Cdn.CDN_0,
+    remoteLocation = null,
+    remoteKey = null,
+    remoteDigest = null,
+    incrementalDigest = null,
+    fastPreflightId = SecureRandom().nextLong().toString(),
+    voiceNote = false,
+    borderless = false,
+    videoGif = false,
+    width = StickerSlide.WIDTH,
+    height = StickerSlide.HEIGHT,
+    incrementalMacChunkSize = 0,
+    quote = false,
+    uploadTimestamp = 0,
+    caption = null,
+    stickerLocator = stickerLocator,
+    blurHash = null,
+    audioHash = null,
+    transformProperties = null,
+    uuid = null
+  ) {
+    uri = stickerRecord.uri
+  }
+
+  @Suppress("unused")
+  constructor(parcel: Parcel) : super(parcel) {
+    uri = ParcelCompat.readParcelable(parcel, Uri::class.java.classLoader, Uri::class.java)!!
+  }
+
+  override val uri: Uri
+  override val publicUri: Uri? = null
+  override val thumbnailUri: Uri? = null
+
+  val packId: String = stickerLocator!!.packId
+  val stickerId: Int = stickerLocator!!.stickerId
+
+  override fun writeToParcel(dest: Parcel, flags: Int) {
+    super.writeToParcel(dest, flags)
+    dest.writeParcelable(uri, 0)
+  }
+
+  override fun equals(other: Any?): Boolean {
+    return other != null && other is LocalStickerAttachment && other.uri == uri
+  }
+
+  override fun hashCode(): Int {
+    return uri.hashCode()
+  }
+}