Add src:local search alias for Local Source (#2928)

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryItem.kt

@@ -3,9 +3,12 @@ package eu.kanade.tachiyomi.ui.library
 import eu.kanade.tachiyomi.source.getNameForMangaInfo
 import tachiyomi.domain.library.model.LibraryManga
 import tachiyomi.domain.source.service.SourceManager
+import tachiyomi.source.local.LocalSource
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
 
+private const val LOCAL_SOURCE_ID_ALIAS = "local"
+
 data class LibraryItem(
     val libraryManga: LibraryManga,
     val downloadCount: Long = -1,
@@ -28,7 +31,12 @@ data class LibraryItem(
         if (constraint.startsWith("id:", true)) {
             return id == constraint.substringAfter("id:").toLongOrNull()
         } else if (constraint.startsWith("src:", true)) {
-            return source.id == constraint.substringAfter("src:").toLongOrNull()
+            val querySource = constraint.substringAfter("src:")
+            return if (querySource.equals(LOCAL_SOURCE_ID_ALIAS, ignoreCase = true)) {
+                source.id == LocalSource.ID
+            } else {
+                source.id == querySource.toLongOrNull()
+            }
         }
         return libraryManga.manga.title.contains(constraint, true) ||
             (libraryManga.manga.author?.contains(constraint, true) ?: false) ||