sql first refactor

db/migration/V049__planning_config.sql

@@ -0,0 +1,11 @@
+-- volitelné plánovací konstanty per site (horizont, decay, …) – čte fn_planning_site_context
+
+create table if not exists ems.planning_config (
+  site_id int not null references ems.site (id) on delete cascade,
+  config jsonb not null default '{}'::jsonb,
+  updated_at timestamptz not null default now(),
+  primary key (site_id)
+);
+
+comment on table ems.planning_config is
+  'JSON konfigurace pro budoucí přesun konstant z planning_engine.py (slot weights, correction decay, …).';