feat(platform): add managed data product history plane

packages/n8n-nodes-ndc/README.md

@@ -9,8 +9,8 @@ qualified:
 
 - `n8n-nodes-ndc.ndcDataProductPublish` — publishes canonical facts into an
   approved Data Product.
-- `n8n-nodes-ndc.ndcDataProductRead` — reads the current snapshot of an
-  approved Data Product.
+- `n8n-nodes-ndc.ndcDataProductRead` — reads the current snapshot or a bounded,
+  cursor-paged history window of an approved Data Product.
 - `n8n-nodes-ndc.ndcFoundryBinding` — creates or updates a declarative Foundry
   page-slot binding. This is a control-plane operation, not a runtime data
   transport.
@@ -42,6 +42,7 @@ never accepts them from a workflow.
 - `GET /internal/data-plane/v1/reader/data-products`
 - `POST /internal/data-plane/v1/data-products/:dataProductId/publish`
 - `GET /internal/data-plane/v1/data-products/:dataProductId/snapshot`
+- `GET /internal/data-plane/v1/data-products/:dataProductId/history`
 - `GET /internal/foundry/v1/data-products`
 - `POST /internal/foundry/v1/data-product-bindings`
 
@@ -58,14 +59,20 @@ materializes actor, owner and exact application/page/binding/product scope from
 that grant; none of those authorization claims are accepted from headers or
 workflow data.
 
-`NDC Data Product Read` supports only the bounded
-`nodedc.data-product.snapshot/v1` contract. Its `Page Size` parameter is a
+`NDC Data Product Read` supports the bounded
+`nodedc.data-product.snapshot/v1` contract. Its snapshot `Page Size` parameter is a
 safety ceiling, not pagination: the complete scoped current projection must fit
 within 5000 entity keys. A larger product returns
 `data_product_snapshot_limit_exceeded`; the node must not assemble independent
 pages or start a patch stream from an incomplete snapshot. Large products need
-stable partition Data Products or a separately versioned query contract with a
-single snapshot barrier.
+stable partition Data Products.
+
+History mode uses `nodedc.data-product.history/v1` and requires a closed
+`from`/`to` interval. It supports provider-neutral `sourceIds`, a resolution
+that is a multiple of the Data Product native sampling interval, a limit up to
+5000 points and an opaque keyset continuation cursor. The response stays as one
+envelope item so L2 logic can preserve `query` and `nextCursor` while iterating.
+The workflow never selects a database, provider, tenant or connection.
 
 ## Publish input