Add office gap management: Introduced new queries and logic in PoliticsWorker to identify and create elections for office type/region combinations with insufficient seats. Implemented trimming of excess offices to ensure compliance with configured seat limits. Updated UserCharacterWorker to delete political offices and maintain seat integrity post-deletion.

src/worker/user_character.rs

@@ -378,9 +378,56 @@ const QUERY_DELETE_DEBTORS_PRISM: &str = r#"
      WHERE character_id = $1;
 "#;
 
+/// Löscht alle Ämter eines Charakters und stellt anschließend sicher, dass
+/// für die betroffenen Amtstyp/Region-Kombinationen nicht mehr Ämter
+/// besetzt sind als durch `seats_per_region` vorgesehen.
+///
+/// Die überzähligen Ämter werden deterministisch nach `created_at DESC`
+/// gekappt, d. h. neuere Amtsinhaber bleiben bevorzugt im Amt.
 const QUERY_DELETE_POLITICAL_OFFICE: &str = r#"
+    WITH removed AS (
+        DELETE FROM falukant_data.political_office
+         WHERE character_id = $1
+        RETURNING office_type_id, region_id
+    ),
+    affected AS (
+        SELECT DISTINCT office_type_id, region_id
+          FROM removed
+    ),
+    seats AS (
+        SELECT
+            pot.id               AS office_type_id,
+            rt.id                AS region_id,
+            pot.seats_per_region AS seats_total
+        FROM falukant_type.political_office_type AS pot
+        JOIN falukant_type.region AS rt
+          ON pot.region_type = rt.label_tr
+        JOIN affected AS a
+          ON a.office_type_id = pot.id
+         AND a.region_id      = rt.id
+    ),
+    ranked AS (
+        SELECT
+            po.id,
+            po.office_type_id,
+            po.region_id,
+            s.seats_total,
+            ROW_NUMBER() OVER (
+                PARTITION BY po.office_type_id, po.region_id
+                ORDER BY po.created_at DESC
+            ) AS rn
+        FROM falukant_data.political_office AS po
+        JOIN seats AS s
+          ON s.office_type_id = po.office_type_id
+         AND s.region_id      = po.region_id
+    ),
+    to_delete AS (
+        SELECT id
+          FROM ranked
+         WHERE rn > seats_total
+    )
     DELETE FROM falukant_data.political_office
-     WHERE character_id = $1;
+     WHERE id IN (SELECT id FROM to_delete);
 "#;
 
 const QUERY_DELETE_ELECTION_CANDIDATE: &str = r#"