refactor(core): consolidate references (#31539)

packages/core/test/session-runner-message.test.ts

@@ -4,7 +4,7 @@ import * as OpenAIChat from "@opencode-ai/llm/protocols/openai-chat"
 import { ModelV2 } from "@opencode-ai/core/model"
 import { ProviderV2 } from "@opencode-ai/core/provider"
 import { SessionMessage } from "@opencode-ai/core/session/message"
-import { AgentAttachment, FileAttachment, ReferenceAttachment } from "@opencode-ai/core/session/prompt"
+import { AgentAttachment, FileAttachment } from "@opencode-ai/core/session/prompt"
 import { toLLMMessages } from "@opencode-ai/core/session/runner/to-llm-message"
 import { SessionV2 } from "@opencode-ai/core/session"
 import { ToolOutput } from "@opencode-ai/core/tool-output"
@@ -17,7 +17,6 @@ const model = Model.make({ id: "model", provider: "provider", route: OpenAIChat.
 describe("toLLMMessages", () => {
   test("maps every top-level V2 Session message type", () => {
     const file = new FileAttachment({ uri: "data:image/png;base64,aGVsbG8=", mime: "image/png", name: "hello.png" })
-    const reference = new ReferenceAttachment({ name: "docs", kind: "local", uri: "file:///docs" })
     const messages = toLLMMessages(
       [
         new SessionMessage.AgentSwitched({
@@ -44,7 +43,6 @@ describe("toLLMMessages", () => {
           text: "Inspect this image",
           files: [file],
           agents: [new AgentAttachment({ name: "build" })],
-          references: [reference],
           time: { created },
         }),
         new SessionMessage.Synthetic({
@@ -84,7 +82,7 @@ describe("toLLMMessages", () => {
           { type: "text", text: "Inspect this image" },
           { type: "media", mediaType: "image/png", data: "data:image/png;base64,aGVsbG8=", filename: "hello.png" },
         ],
-        metadata: { agents: [{ name: "build" }], references: [reference] },
+        metadata: { agents: [{ name: "build" }] },
       }),
     )
     expect(messages.slice(2).map((message) => message.content)).toEqual([