test(ai): keep image bridge fixture type safe

infrastructure/ai/sdkProviders.test.ts

@@ -1,5 +1,8 @@
 import assert from "node:assert/strict";
 import test from "node:test";
+import { generateText, streamText } from "ai";
+import { buildCattySdkMessages, createContinuationContext } from "./harness/turnDrivers/cattyMessageBuilder";
+import { ToolOutputStore } from "./harness/toolOutputStore";
 
 import { createModelFromConfig, resolveProviderEndpoint } from "./sdk/providers";
 import type { ProviderConfig } from "./types";
@@ -280,3 +283,43 @@ test("SDK requests forward custom headers and scope OpenCode sessions", async (t
   }
   assert.equal(requests.length, 16);
 });
+
+test("OpenAI Chat sends inline image attachments as data URLs through the bridge", async (t) => {
+  const browserGlobal = globalThis as typeof globalThis & { window?: unknown };
+  const originalWindow = browserGlobal.window;
+  t.after(() => { browserGlobal.window = originalWindow; });
+  const requests: Array<{ url: string; body: Record<string, unknown> }> = [];
+  Reflect.set(globalThis, "window", { netcatty: {
+    aiFetch: async (url: string, _method: string, _headers: Record<string, string>, body: string) => {
+      requests.push({ url, body: JSON.parse(body) });
+      return { ok: false, status: 400, data: '{"error":{"message":"captured request"}}' };
+    },
+    aiChatStream: async (_requestId: string, url: string, _headers: Record<string, string>, body: string) => {
+      requests.push({ url, body: JSON.parse(body) });
+      return { ok: false, error: "captured request" };
+    },
+    onAiStreamData: () => () => {},
+    onAiStreamEnd: () => () => {},
+    onAiStreamError: () => () => {},
+  } });
+
+  for (const [mediaType, base64Data] of [["image/png", "iVBORw0KGgo="], ["image/jpeg", "/9j/4A=="]]) {
+    const messages = buildCattySdkMessages({
+      allMessages: [], includeCurrentUserMessage: true, trimmed: "Read this image",
+      attachments: [{ mediaType, base64Data }],
+      continuationContext: createContinuationContext("p", "openai", "m", false),
+      chatSessionId: "images", toolOutputStore: new ToolOutputStore(), fieldsByMessage: new Map(),
+    });
+    const model = createModelFromConfig(makeConfig({ openaiApi: "chat", apiKey: "test-key", baseURL: "https://example.test/v1" }));
+    await assert.rejects(generateText({ model, messages, maxRetries: 0 }), /captured request/);
+    await assert.rejects(async () => await streamText({ model, messages, maxRetries: 0, onError: () => {} }).text);
+    for (const request of requests.slice(-2)) {
+      assert.equal(request.url, "https://example.test/v1/chat/completions");
+      assert.deepEqual(request.body.messages, [{ role: "user", content: [
+        { type: "text", text: "Read this image" },
+        { type: "image_url", image_url: { url: `data:${mediaType};base64,${base64Data}` } },
+      ] }]);
+    }
+  }
+  assert.equal(requests.length, 4);
+});

package-lock.json

@@ -16,7 +16,7 @@
       "dependencies": {
         "@ai-sdk/anthropic": "^4.0.0",
         "@ai-sdk/google": "^4.0.0",
-        "@ai-sdk/openai": "^4.0.0",
+        "@ai-sdk/openai": "4.0.8",
         "@aws-sdk/client-s3": "^3.956.0",
         "@eslint-community/regexpp": "4.12.2",
         "@fontsource/jetbrains-mono": "^5.2.8",
@@ -197,13 +197,43 @@
       }
     },
     "node_modules/@ai-sdk/openai": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/@ai-sdk/openai/-/openai-4.0.0.tgz",
-      "integrity": "sha512-XcI/bJEG+Ymx8ZwQMY9GE9waHdEcSzT6wn2o+YW80hOQPf8IAGQvdNWKaD0mxLi6AmOM0L01y/p626w7rImblQ==",
+      "version": "4.0.8",
+      "resolved": "https://registry.npmjs.org/@ai-sdk/openai/-/openai-4.0.8.tgz",
+      "integrity": "sha512-yW2UuS6jlu2LRYCd+cSpVdu/umf+QjypihYAiGvKk5HnpqQf21ffNjFbke9xo9jhT+TBt2YR30Fs5Sy0md/dfA==",
       "license": "Apache-2.0",
       "dependencies": {
-        "@ai-sdk/provider": "4.0.0",
-        "@ai-sdk/provider-utils": "5.0.0"
+        "@ai-sdk/provider": "4.0.2",
+        "@ai-sdk/provider-utils": "5.0.5"
+      },
+      "engines": {
+        "node": ">=22"
+      },
+      "peerDependencies": {
+        "zod": "^3.25.76 || ^4.1.8"
+      }
+    },
+    "node_modules/@ai-sdk/openai/node_modules/@ai-sdk/provider": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/@ai-sdk/provider/-/provider-4.0.2.tgz",
+      "integrity": "sha512-pfPoy9J1B1xV7cqJ8MYHOsDYrMv5tR3+EMNfI249OhkD2uRakvav3Fo7XpD2luuN/YNCBY7KfEQc7vEV7KEtyw==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "json-schema": "^0.4.0"
+      },
+      "engines": {
+        "node": ">=22"
+      }
+    },
+    "node_modules/@ai-sdk/openai/node_modules/@ai-sdk/provider-utils": {
+      "version": "5.0.5",
+      "resolved": "https://registry.npmjs.org/@ai-sdk/provider-utils/-/provider-utils-5.0.5.tgz",
+      "integrity": "sha512-oI0t3dvCoqWNV1I8o1Rybi2DXDvHES5r/TrwtJW90tuFLVepgJlftPxrcjh8vaSvjqC2diTuA2vXyjKAyHJm4A==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@ai-sdk/provider": "4.0.2",
+        "@standard-schema/spec": "^1.1.0",
+        "@workflow/serde": "4.1.0",
+        "eventsource-parser": "^3.0.8"
       },
       "engines": {
         "node": ">=22"

package.json

@@ -76,7 +76,7 @@
   "dependencies": {
     "@ai-sdk/anthropic": "^4.0.0",
     "@ai-sdk/google": "^4.0.0",
-    "@ai-sdk/openai": "^4.0.0",
+    "@ai-sdk/openai": "4.0.8",
     "@aws-sdk/client-s3": "^3.956.0",
     "@eslint-community/regexpp": "4.12.2",
     "@fontsource/jetbrains-mono": "^5.2.8",