fix repeatable migrations

db/routines/R__017_fn_ev_sessions_active.sql

@@ -0,0 +1,49 @@
+create or replace function ems.fn_ev_sessions_active(p_site_id int)
+returns jsonb
+language sql
+stable
+as $fn$
+  select coalesce(
+    jsonb_agg(
+      jsonb_build_object(
+        'id', es.id,
+        'charger_id', es.charger_id,
+        'vehicle_id', es.vehicle_id,
+        'session_start', es.session_start,
+        'energy_delivered_wh', es.energy_delivered_wh,
+        'target_soc_pct', es.target_soc_pct,
+        'target_deadline', es.target_deadline,
+        'make', av.make,
+        'model', av.model,
+        'battery_capacity_kwh', av.battery_capacity_kwh,
+        'default_target_soc_pct', av.default_target_soc_pct,
+        'default_deadline_hour', av.default_deadline_hour,
+        'charger_code', ac.code,
+        'charger_name',
+        coalesce(
+          nullif(
+            trim(
+              concat_ws(
+                ' ',
+                nullif(trim(ac.manufacturer), ''),
+                nullif(trim(ac.model), '')
+              )
+            ),
+            ''
+          ),
+          ac.code
+        )
+      )
+      order by es.session_start desc
+    ),
+    '[]'::jsonb
+  )
+  from ems.ev_session es
+  left join ems.asset_vehicle av on av.id = es.vehicle_id
+  join ems.asset_ev_charger ac on ac.id = es.charger_id
+  where es.site_id = p_site_id
+    and es.session_end is null;
+$fn$;
+
+comment on function ems.fn_ev_sessions_active(int) is
+  'Aktivní EV session pro site (GET /ev/sessions/active).';