feat(mcp): подготовить сервер и доступ к приёмке

backend/drizzle/0005_flow_facts.sql

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+-- Statistics cube: hour + daily facts (server × iface × country × service × ASN).
+-- Compact types. FILLFACTOR/autovacuum нельзя на partitioned parent (PG 42809) —
+-- задаются на листовых партициях в ensurePartitionFor.
+-- Retention: DROP partitions only (see PARTITION_SPECS).
+
+CREATE TABLE IF NOT EXISTS flow_hour_facts (
+  server_id BIGINT NOT NULL REFERENCES servers(id) ON DELETE CASCADE,
+  bucket_at TIMESTAMPTZ NOT NULL,
+  iface TEXT NOT NULL,
+  country CHAR(2) NOT NULL,
+  service TEXT NOT NULL,
+  asn INTEGER NOT NULL,
+  bytes BIGINT NOT NULL DEFAULT 0,
+  packets BIGINT NOT NULL DEFAULT 0,
+  PRIMARY KEY (server_id, bucket_at, iface, country, service, asn)
+) PARTITION BY RANGE (bucket_at);
+
+CREATE TABLE IF NOT EXISTS flow_daily_facts (
+  server_id BIGINT NOT NULL REFERENCES servers(id) ON DELETE CASCADE,
+  day DATE NOT NULL,
+  iface TEXT NOT NULL,
+  country CHAR(2) NOT NULL,
+  service TEXT NOT NULL,
+  asn INTEGER NOT NULL,
+  bytes BIGINT NOT NULL DEFAULT 0,
+  packets BIGINT NOT NULL DEFAULT 0,
+  PRIMARY KEY (server_id, day, iface, country, service, asn)
+) PARTITION BY RANGE (day);