Key legal question
Whether the public law appeal could seek annulment of the cantonal department decision as well as the last cantonal judgment.
Extracted holding
The appeal was inadmissible to the extent it also sought annulment of the first-instance departmental decision, because only the last cantonal decision may be challenged.
Extracted reasoning
Public law appeal lies only against final cantonal decisions; absent special exceptions, prior-instance decisions cannot be attacked in parallel.