feat(platform): add replaceable geozone data layer

packages/external-provider-contract/test/data-product.test.mjs

@@ -72,6 +72,32 @@ assert.equal(validateDataProductPublish({
   ...publish,
   facts: [{ ...fact, geometry: { type: "Point", coordinates: [37.6173, 90.0001] } }],
 }).errors.includes("facts[0].geometry.latitude_out_of_range"), true);
+const zoneGenerationAt = "2026-07-15T10:10:00.000Z";
+const zoneFact = {
+  sourceId: "gelios-zone-42",
+  semanticType: "map.zone",
+  observedAt: zoneGenerationAt,
+  attributes: { display_name: "Zone 42" },
+  geometry: {
+    type: "Polygon",
+    coordinates: [[[37.60, 55.74], [37.62, 55.74], [37.62, 55.76], [37.60, 55.74]]],
+  },
+};
+const replacement = {
+  ...publish,
+  batch: { ...publish.batch, mode: "replace", generationAt: zoneGenerationAt },
+  facts: [zoneFact],
+};
+assert.equal(validateDataProductPublish(replacement).ok, true);
+assert.equal(validateDataProductPublish({ ...replacement, facts: [] }).ok, true);
+assert.equal(validateDataProductPublish({
+  ...replacement,
+  facts: [{ ...zoneFact, observedAt: "2026-07-15T10:09:59.000Z" }],
+}).errors.includes("facts[0].observedAt_must_equal_generationAt"), true);
+assert.equal(validateDataProductPublish({
+  ...replacement,
+  facts: [{ ...zoneFact, geometry: { ...zoneFact.geometry, coordinates: [[[37.60, 55.74], [37.62, 55.74], [37.62, 55.76], [37.61, 55.75]]] } }],
+}).errors.includes("facts[0].geometry[0]_linear_ring_must_be_closed"), true);
 
 const canonicalFact = { ...fact, receivedAt: "2026-07-15T10:00:01.000Z" };
 const snapshot = {
@@ -147,7 +173,11 @@ assert.equal(validateDataProductPatch(patch).ok, true);
 assert.equal(validateDataProductPatch({
   ...patch,
   operations: [{ op: "delete", fact: canonicalFact }],
-}).errors.includes("operations[0].op_must_be_upsert"), true);
+}).errors.includes("operations[0].op_invalid"), true);
+assert.equal(validateDataProductPatch({
+  ...patch,
+  operations: [{ op: "remove", sourceId: "gelios-zone-42", semanticType: "map.zone" }],
+}).ok, true);
 assert.equal(validateDataProductPatch({
   ...patch,
   operations: [{ op: "upsert", fact: { ...canonicalFact, attributes: attributesWithSerializedSize((64 * 1024) + 1) } }],