fix: escape 'key' as reserved word in all MySQL queries with backticks

handlers/repos.go

@@ -100,7 +100,7 @@ func (h *ReposHandler) CleanupRepos(c *gin.Context) {
 	}
 
 	var maxAgeDays string
-	h.db.QueryRow(`SELECT value FROM user_settings WHERE user_id = ? AND key = 'cache.max_age_days'`, user.ID).Scan(&maxAgeDays)
+	h.db.QueryRow("SELECT value FROM user_settings WHERE user_id = ? AND `key` = 'cache.max_age_days'", user.ID).Scan(&maxAgeDays)
 	if maxAgeDays == "" {
 		maxAgeDays = "7"
 	}