fix(gateway): keep agent image attachment checks accurate

CHANGELOG.md

@@ -37,6 +37,7 @@ Docs: https://docs.openclaw.ai
 - Gateway/sessions: keep agent runtime metadata on lightweight `sessions.list` rows so model-only session patches do not make Control UI lose runtime identity. Thanks @vincentkoc.
 - Gateway/sessions: keep bulk `sessions.list` rows lightweight by skipping per-row transcript usage fallback, display model inference, and plugin projection, avoiding event-loop stalls in large session stores. Thanks @Marvinthebored and @vincentkoc.
 - Gateway/models: keep read-only `models.list` fallbacks on persisted/current metadata and configured rows while using static auth checks, so missing `models.json` files no longer runtime-load provider discovery or stall gateway after restart. Fixes #76382; refs #76360 and #75707. Thanks @trojy13, @RayWoo, @AnathemaOfficial, and @vincentkoc.
+- Gateway/models: keep agent image attachment capability checks on the full catalog while preserving the read-only `models.list` path, so image sends are not rejected after static catalog fallback.
 - CLI/plugins: reject missing plugin ids before config writes in `plugins enable` and `plugins disable` so a typo no longer persists a stale config entry. (#73554) Thanks @ai-hpc.
 - Agents/sessions: preserve delivered trailing assistant replies during session-file repair so Telegram/WebChat history is not rewritten to drop already-delivered responses. Fixes #76329. Thanks @obviyus.
 - Gateway/chat history: preserve oversized transcript turns as explicit omitted-message placeholders while avoiding large JSONL parse stalls. Thanks @Marvinthebored and @vincentkoc.

src/gateway/server.models-voicewake-misc.test.ts

@@ -518,7 +518,7 @@ describe("gateway server models + voicewake", () => {
     );
   });
 
-  test("models.list configured view includes auth-backed provider catalog entries", async () => {
+  test("models.list configured view does not run runtime discovery without a read-only catalog", async () => {
     await withEnvAsync(
       {
         ANTHROPIC_API_KEY: undefined,
@@ -528,21 +528,11 @@ describe("gateway server models + voicewake", () => {
       async () => {
         await withModelsConfig({}, async () => {
           await seedPiCatalog();
+          const discoverCallsBefore = piSdkMock.discoverCalls;
           const res = await listModels({ view: "configured" });
           expect(res.ok).toBe(true);
-          expect(res.payload?.models).toEqual([
-            {
-              id: "gpt-test-a",
-              name: "A-Model",
-              provider: "openai",
-              contextWindow: 8000,
-            },
-            {
-              id: "gpt-test-z",
-              name: "gpt-test-z",
-              provider: "openai",
-            },
-          ]);
+          expect(res.payload?.models).toEqual([]);
+          expect(piSdkMock.discoverCalls).toBe(discoverCallsBefore);
         });
       },
     );
@@ -654,9 +644,8 @@ describe("gateway server models + voicewake", () => {
       expected: [
         {
           id: "claude-test-a",
-          name: "A-Model",
+          name: "claude-test-a",
           provider: "anthropic",
-          contextWindow: 200_000,
         },
         {
           id: "gpt-test-z",

src/gateway/session-utils.ts

@@ -1257,7 +1257,7 @@ export function resolveSessionModelRef(
 }
 
 export async function resolveGatewayModelSupportsImages(params: {
-  loadGatewayModelCatalog: () => Promise<ModelCatalogEntry[]>;
+  loadGatewayModelCatalog: (params?: { readOnly?: boolean }) => Promise<ModelCatalogEntry[]>;
   provider?: string;
   model?: string;
 }): Promise<boolean> {
@@ -1266,7 +1266,7 @@ export async function resolveGatewayModelSupportsImages(params: {
   }
 
   try {
-    const catalog = await params.loadGatewayModelCatalog();
+    const catalog = await params.loadGatewayModelCatalog({ readOnly: false });
     const modelEntry = findModelCatalogEntry(catalog, {
       provider: params.provider,
       modelId: params.model,