Fix tracker-induced duplicate key crash in duplicate detection (#3040)

CHANGELOG.md

@@ -14,6 +14,9 @@ The format is a modified version of [Keep a Changelog](https://keepachangelog.co
 ### Improved
 - Rework internals for better performance ([@Lolle2000la](https://github.com/Lolle2000la)) ([#2955](https://github.com/mihonapp/mihon/pull/2955))
 
+### Fixed
+- Fix tracker-induced duplicate key crash in duplicate detection ([@leodyversemilla07](https://github.com/leodyversemilla07)) ([#3040](https://github.com/mihonapp/mihon/pull/3040))
+
 ## [v0.19.4] - 2026-02-25
 ### Added
 - Automatically remove downloads on Suwayomi after reading, configurable via extension settings ([@cpiber](https://github.com/cpiber)) ([#2673](https://github.com/mihonapp/mihon/pull/2673))

data/src/main/sqldelight/tachiyomi/data/mangas.sq

@@ -119,7 +119,7 @@ AND source = :sourceId;
 getDuplicateLibraryManga:
 WITH
 track_dupes AS (
-    SELECT S2.manga_id
+    SELECT DISTINCT S2.manga_id
     FROM manga_sync S1
     INNER JOIN manga_sync S2
     ON S1.sync_id = S2.sync_id