Stabilize news provider chain

migrations/033_create_news_provider_snapshots.sql

@@ -0,0 +1,13 @@
+create table if not exists news_provider_snapshots (
+    id bigserial primary key,
+    provider_name text not null unique,
+    fetched_ts timestamptz,
+    freshness_code text not null,
+    event_count integer not null default 0,
+    is_active boolean not null default false,
+    code text not null,
+    active_events jsonb not null default '[]'::jsonb,
+    error text,
+    raw_payload jsonb not null default '{}'::jsonb,
+    updated_at timestamptz not null default now()
+);