Close P21 runtime incident journal

migrations/043_create_runtime_incidents.sql

@@ -0,0 +1,21 @@
+create table if not exists runtime_incidents (
+    id bigserial primary key,
+    incident_key text not null unique,
+    severity text not null,
+    source text not null,
+    reason text not null,
+    subject text not null default 'runtime',
+    status text not null default 'open',
+    first_seen_ts timestamptz not null,
+    last_seen_ts timestamptz not null,
+    occurrence_count integer not null default 1,
+    recommended_action text not null default '',
+    last_error text,
+    payload jsonb not null default '{}'::jsonb
+);
+
+create index if not exists idx_runtime_incidents_last_seen_desc
+on runtime_incidents (last_seen_ts desc, id desc);
+
+create index if not exists idx_runtime_incidents_severity_status
+on runtime_incidents (severity, status, last_seen_ts desc);