fix(models): apply Gemini model-id normalization to google-vertex provider (#42435)

* fix(models): apply Gemini model-id normalization to google-vertex provider

The existing normalizeGoogleModelId() (which maps e.g. gemini-3.1-flash-lite
to gemini-3.1-flash-lite-preview) was only applied when the provider was
"google". Users configuring google-vertex/gemini-3.1-flash-lite would get
a "missing" model because the -preview suffix was never appended.

Extend the normalization to google-vertex in both model-selection
(parseModelRef path) and normalizeProviders (config normalization path).

Ref: https://github.com/openclaw/openclaw/issues/36838
Ref: https://github.com/openclaw/openclaw/pull/36918#issuecomment-4032732959


* fix(models): normalize google-vertex flash-lite

* fix(models): place unreleased changelog entry last

* fix(models): place unreleased changelog entry before releases

src/agents/model-selection.test.ts

@@ -241,6 +241,12 @@ describe("model-selection", () => {
         defaultProvider: "anthropic",
         expected: { provider: "openai", model: "gpt-5.3-codex-codex" },
       },
+      {
+        name: "normalizes gemini 3.1 flash-lite ids for google-vertex",
+        variants: ["google-vertex/gemini-3.1-flash-lite", "gemini-3.1-flash-lite"],
+        defaultProvider: "google-vertex",
+        expected: { provider: "google-vertex", model: "gemini-3.1-flash-lite-preview" },
+      },
     ])("$name", ({ variants, defaultProvider, expected }) => {
       expectParsedModelVariants(variants, defaultProvider, expected);
     });
@@ -252,7 +258,6 @@ describe("model-selection", () => {
         "anthropic/claude-opus-4-6",
       );
     });
-
     it.each(["", "  ", "/", "anthropic/", "/model"])("returns null for invalid ref %j", (raw) => {
       expect(parseModelRef(raw, "anthropic")).toBeNull();
     });

src/agents/model-selection.ts

@@ -171,7 +171,7 @@ function normalizeProviderModelId(provider: string, model: string): string {
       return `anthropic/${normalizedAnthropicModel}`;
     }
   }
-  if (provider === "google") {
+  if (provider === "google" || provider === "google-vertex") {
     return normalizeGoogleModelId(model);
   }
   // OpenRouter-native models (e.g. "openrouter/aurora-alpha") need the full

src/agents/models-config.providers.google-antigravity.test.ts

@@ -97,3 +97,33 @@ describe("google-antigravity provider normalization", () => {
     expect(normalized).toBe(providers);
   });
 });
+
+describe("google-vertex provider normalization", () => {
+  it("normalizes gemini flash-lite IDs for google-vertex providers", () => {
+    const agentDir = mkdtempSync(join(tmpdir(), "openclaw-test-"));
+    const providers = {
+      "google-vertex": buildProvider(["gemini-3.1-flash-lite", "gemini-3-flash-preview"]),
+      openai: buildProvider(["gpt-5"]),
+    };
+
+    const normalized = normalizeProviders({ providers, agentDir });
+
+    expect(normalized).not.toBe(providers);
+    expect(normalized?.["google-vertex"]?.models.map((model) => model.id)).toEqual([
+      "gemini-3.1-flash-lite-preview",
+      "gemini-3-flash-preview",
+    ]);
+    expect(normalized?.openai).toBe(providers.openai);
+  });
+
+  it("returns original providers object when no google-vertex IDs need normalization", () => {
+    const agentDir = mkdtempSync(join(tmpdir(), "openclaw-test-"));
+    const providers = {
+      "google-vertex": buildProvider(["gemini-3.1-flash-lite-preview", "gemini-3-flash-preview"]),
+    };
+
+    const normalized = normalizeProviders({ providers, agentDir });
+
+    expect(normalized).toBe(providers);
+  });
+});

src/agents/models-config.providers.ts

@@ -545,7 +545,7 @@ export function normalizeProviders(params: {
       }
     }
 
-    if (normalizedKey === "google") {
+    if (normalizedKey === "google" || normalizedKey === "google-vertex") {
       const googleNormalized = normalizeGoogleProvider(normalizedProvider);
       if (googleNormalized !== normalizedProvider) {
         mutated = true;