docs(changelog): add fragment for #11326 (KIE Market google-imagen id mapping)

Issue #11225's fix only mapped google-imagen/nano-banana-2 -> nano-banana-2.
Per docs.kie.ai/market/google/*, the other three google-imagen Market
catalog ids also need an explicit upstream mapping, and it is not a
uniform "strip the namespace" rule:

- google-imagen/nano-banana -> google/nano-banana
- google-imagen/nano-banana-pro -> nano-banana-pro
- google-imagen/nano-banana-edit -> google/nano-banana-edit

Verified against the other 27 KIE Market catalog ids (seedream, flux,
ideogram, qwen, wan, grok-imagine, gpt): their catalog ids already match
their real upstream ids byte-for-byte, so KIE_MARKET_UPSTREAM_MODEL_IDS
stays scoped to the google-imagen namespace.

Refs #11296

changelog.d/fixes/11326-kie-market-google-imagen-ids.md

@@ -0,0 +1 @@
+- **fix(kie):** map the remaining `google-imagen/*` KIE Market catalog ids (`nano-banana`, `nano-banana-pro`, `nano-banana-edit`) to their real, KIE-documented upstream `model` values — `#11225`'s fix only covered `nano-banana-2` ([#11326](https://github.com/diegosouzapw/OmniRoute/pull/11326)).

open-sse/handlers/imageGeneration.ts

@@ -91,8 +91,20 @@ interface KieImageOptions {
   } | null;
 }
 
+// KIE Market catalog ids are namespaced for OmniRoute's catalog
+// (`google-imagen/<model>`), but the KIE Market createTask API expects
+// vendor-specific upstream ids that do not follow a single consistent
+// pattern (confirmed against docs.kie.ai/market/google/* — see #11225,
+// #11296): nano-banana-2 and nano-banana-pro drop the vendor namespace
+// entirely, while nano-banana and nano-banana-edit use a `google/` prefix
+// instead of `google-imagen/`. Every other KIE Market namespace (seedream,
+// flux, ideogram, qwen, wan, grok-imagine, gpt) already matches its real
+// upstream id byte-for-byte, so this map stays scoped to google-imagen.
 export const KIE_MARKET_UPSTREAM_MODEL_IDS: ReadonlyMap<string, string> = new Map([
+  ["google-imagen/nano-banana", "google/nano-banana"],
   ["google-imagen/nano-banana-2", "nano-banana-2"],
+  ["google-imagen/nano-banana-pro", "nano-banana-pro"],
+  ["google-imagen/nano-banana-edit", "google/nano-banana-edit"],
 ]);
 
 export function resolveKieMarketUpstreamModelId(publicModelId: string): string {

tests/unit/kie-market-upstream-model-id-11225.test.ts

@@ -103,7 +103,7 @@ function resolveLiveKieMarketCatalog() {
   }));
 }
 
-test("KIE Market resolver changes exactly one id in the live market catalog", () => {
+test("KIE Market resolver changes exactly the 4 google-imagen ids in the live market catalog", () => {
   const roundTrips = resolveLiveKieMarketCatalog();
   const changed = roundTrips.filter(({ publicModelId, upstreamModelId }) => {
     return upstreamModelId !== publicModelId;
@@ -114,12 +114,31 @@ test("KIE Market resolver changes exactly one id in the live market catalog", ()
       publicModelId: "google-imagen/nano-banana-2",
       upstreamModelId: "nano-banana-2",
     },
+    {
+      publicModelId: "google-imagen/nano-banana",
+      upstreamModelId: "google/nano-banana",
+    },
+    {
+      publicModelId: "google-imagen/nano-banana-pro",
+      upstreamModelId: "nano-banana-pro",
+    },
+    {
+      publicModelId: "google-imagen/nano-banana-edit",
+      upstreamModelId: "google/nano-banana-edit",
+    },
   ]);
 });
 
+const REWRITTEN_GOOGLE_IMAGEN_MARKET_IDS = new Set([
+  "google-imagen/nano-banana",
+  "google-imagen/nano-banana-2",
+  "google-imagen/nano-banana-pro",
+  "google-imagen/nano-banana-edit",
+]);
+
 test("KIE Market resolver preserves every other live market catalog id byte-identically", () => {
   for (const { publicModelId, upstreamModelId } of resolveLiveKieMarketCatalog()) {
-    if (publicModelId !== "google-imagen/nano-banana-2") {
+    if (!REWRITTEN_GOOGLE_IMAGEN_MARKET_IDS.has(publicModelId)) {
       assert.equal(
         upstreamModelId,
         publicModelId,
@@ -129,8 +148,8 @@ test("KIE Market resolver preserves every other live market catalog id byte-iden
   }
 });
 
-test("KIE Market resolver keeps exactly one explicit upstream id mapping", () => {
-  assert.equal(KIE_MARKET_UPSTREAM_MODEL_IDS.size, 1);
+test("KIE Market resolver keeps exactly the explicit google-imagen upstream id mappings (#11296)", () => {
+  assert.equal(KIE_MARKET_UPSTREAM_MODEL_IDS.size, 4);
 });
 
 test("KIE Market resolver passes an unknown namespaced id through byte-identically", () => {
@@ -160,6 +179,36 @@ test("KIE Market createTask sends the bare upstream model id for Nano Banana 2 (
   assert.equal(captured.result.data.data[0].url, "https://example.com/kie-market-image.png");
 });
 
+test("KIE Market createTask sends the KIE upstream id for Nano Banana (#11296)", async () => {
+  const captured = await runKieMarketGeneration("kie/google-imagen/nano-banana");
+
+  assert.equal(
+    captured.create.body.model,
+    "google/nano-banana",
+    "KIE Market createTask must send the KIE-documented google/nano-banana upstream id"
+  );
+});
+
+test("KIE Market createTask sends the bare upstream model id for Nano Banana Pro (#11296)", async () => {
+  const captured = await runKieMarketGeneration("kie/google-imagen/nano-banana-pro");
+
+  assert.equal(
+    captured.create.body.model,
+    "nano-banana-pro",
+    "KIE Market createTask must send the KIE-documented nano-banana-pro upstream id"
+  );
+});
+
+test("KIE Market createTask sends the KIE upstream id for Nano Banana Edit (#11296)", async () => {
+  const captured = await runKieMarketGeneration("kie/google-imagen/nano-banana-edit");
+
+  assert.equal(
+    captured.create.body.model,
+    "google/nano-banana-edit",
+    "KIE Market createTask must send the KIE-documented google/nano-banana-edit upstream id"
+  );
+});
+
 test("KIE Market createTask leaves genuinely namespaced upstream ids untouched (#11225 control)", async () => {
   const captured = await runKieMarketGeneration("kie/seedream/4.5-text-to-image");