refactor(db): normalize module prefix snapshot rows

Строки префиксов в module_prefix_snapshot_row вместо JSONB blobs.

Co-authored-by: Cursor <[email protected]>

migrations/postgres/000019_module_snapshot_rows.up.sql

@@ -0,0 +1,25 @@
+CREATE TABLE module_prefix_snapshot_row (
+    tenant_id     UUID NOT NULL,
+    module_id     UUID NOT NULL,
+    ord           INTEGER NOT NULL,
+    prefix        CIDR NOT NULL,
+    community_id  UUID,
+    source        TEXT NOT NULL DEFAULT '',
+    PRIMARY KEY (tenant_id, module_id, ord),
+    FOREIGN KEY (tenant_id, module_id)
+        REFERENCES module_prefix_snapshot (tenant_id, module_id) ON DELETE CASCADE
+);
+
+INSERT INTO module_prefix_snapshot_row (tenant_id, module_id, ord, prefix, community_id, source)
+SELECT mps.tenant_id,
+    mps.module_id,
+    (t.ordinality - 1)::int,
+    (t.elem->>'prefix')::cidr,
+    NULLIF(t.elem->>'community_id', '')::uuid,
+    COALESCE(NULLIF(t.elem->>'source', ''), '')
+FROM module_prefix_snapshot mps
+CROSS JOIN LATERAL jsonb_array_elements(mps.prefixes_json) WITH ORDINALITY AS t(elem, ordinality)
+WHERE jsonb_typeof(mps.prefixes_json) = 'array'
+  AND jsonb_array_length(mps.prefixes_json) > 0;
+
+ALTER TABLE module_prefix_snapshot DROP COLUMN prefixes_json;