chore: rename toModelMessage -> toModelMessages

packages/opencode/src/session/compaction.ts

@@ -149,7 +149,7 @@ export namespace SessionCompaction {
       tools: {},
       system: [],
       messages: [
-        ...MessageV2.toModelMessage(input.messages),
+        ...MessageV2.toModelMessages(input.messages),
         {
           role: "user",
           content: [

packages/opencode/src/session/message-v2.ts

@@ -432,7 +432,7 @@ export namespace MessageV2 {
   })
   export type WithParts = z.infer<typeof WithParts>
 
-  export function toModelMessage(input: WithParts[]): ModelMessage[] {
+  export function toModelMessages(input: WithParts[]): ModelMessage[] {
     const result: UIMessage[] = []
 
     for (const msg of input) {

packages/opencode/src/session/prompt.ts

@@ -598,7 +598,7 @@ export namespace SessionPrompt {
         sessionID,
         system: [...(await SystemPrompt.environment()), ...(await SystemPrompt.custom())],
         messages: [
-          ...MessageV2.toModelMessage(sessionMessages),
+          ...MessageV2.toModelMessages(sessionMessages),
           ...(isLastStep
             ? [
                 {
@@ -1800,7 +1800,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
         },
         ...(hasOnlySubtaskParts
           ? [{ role: "user" as const, content: subtaskParts.map((p) => p.prompt).join("\n") }]
-          : MessageV2.toModelMessage(contextMessages)),
+          : MessageV2.toModelMessages(contextMessages)),
       ],
     })
     const text = await result.text.catch((err) => log.error("failed to generate title", { error: err }))

packages/opencode/test/session/message-v2.test.ts

@@ -66,7 +66,7 @@ describe("session.message-v2.toModelMessage", () => {
       },
     ]
 
-    expect(MessageV2.toModelMessage(input)).toStrictEqual([
+    expect(MessageV2.toModelMessages(input)).toStrictEqual([
       {
         role: "user",
         content: [{ type: "text", text: "hello" }],
@@ -91,7 +91,7 @@ describe("session.message-v2.toModelMessage", () => {
       },
     ]
 
-    expect(MessageV2.toModelMessage(input)).toStrictEqual([])
+    expect(MessageV2.toModelMessages(input)).toStrictEqual([])
   })
 
   test("includes synthetic text parts", () => {
@@ -122,7 +122,7 @@ describe("session.message-v2.toModelMessage", () => {
       },
     ]
 
-    expect(MessageV2.toModelMessage(input)).toStrictEqual([
+    expect(MessageV2.toModelMessages(input)).toStrictEqual([
       {
         role: "user",
         content: [{ type: "text", text: "hello" }],
@@ -189,7 +189,7 @@ describe("session.message-v2.toModelMessage", () => {
       },
     ]
 
-    expect(MessageV2.toModelMessage(input)).toStrictEqual([
+    expect(MessageV2.toModelMessages(input)).toStrictEqual([
       {
         role: "user",
         content: [
@@ -259,7 +259,7 @@ describe("session.message-v2.toModelMessage", () => {
       },
     ]
 
-    expect(MessageV2.toModelMessage(input)).toStrictEqual([
+    expect(MessageV2.toModelMessages(input)).toStrictEqual([
       {
         role: "user",
         content: [{ type: "text", text: "run tool" }],
@@ -341,7 +341,7 @@ describe("session.message-v2.toModelMessage", () => {
       },
     ]
 
-    expect(MessageV2.toModelMessage(input)).toStrictEqual([
+    expect(MessageV2.toModelMessages(input)).toStrictEqual([
       {
         role: "user",
         content: [{ type: "text", text: "run tool" }],
@@ -408,7 +408,7 @@ describe("session.message-v2.toModelMessage", () => {
       },
     ]
 
-    expect(MessageV2.toModelMessage(input)).toStrictEqual([
+    expect(MessageV2.toModelMessages(input)).toStrictEqual([
       {
         role: "user",
         content: [{ type: "text", text: "run tool" }],
@@ -461,7 +461,7 @@ describe("session.message-v2.toModelMessage", () => {
       },
     ]
 
-    expect(MessageV2.toModelMessage(input)).toStrictEqual([])
+    expect(MessageV2.toModelMessages(input)).toStrictEqual([])
   })
 
   test("includes aborted assistant messages only when they have non-step-start/reasoning content", () => {
@@ -504,7 +504,7 @@ describe("session.message-v2.toModelMessage", () => {
       },
     ]
 
-    expect(MessageV2.toModelMessage(input)).toStrictEqual([
+    expect(MessageV2.toModelMessages(input)).toStrictEqual([
       {
         role: "assistant",
         content: [
@@ -540,7 +540,7 @@ describe("session.message-v2.toModelMessage", () => {
       },
     ]
 
-    expect(MessageV2.toModelMessage(input)).toStrictEqual([
+    expect(MessageV2.toModelMessages(input)).toStrictEqual([
       {
         role: "assistant",
         content: [{ type: "text", text: "first" }],
@@ -567,7 +567,7 @@ describe("session.message-v2.toModelMessage", () => {
       },
     ]
 
-    expect(MessageV2.toModelMessage(input)).toStrictEqual([])
+    expect(MessageV2.toModelMessages(input)).toStrictEqual([])
   })
 
   test("converts pending/running tool calls to error results to prevent dangling tool_use", () => {
@@ -614,7 +614,7 @@ describe("session.message-v2.toModelMessage", () => {
       },
     ]
 
-    const result = MessageV2.toModelMessage(input)
+    const result = MessageV2.toModelMessages(input)
 
     expect(result).toStrictEqual([
       {