fix(tabs): stamp tabs with the conversation's persisted model (conv.model), not activeModel

2 files changed, 37 insertions, 0 deletions

diff --git a/src/adapters/ws/logic.test.ts b/src/adapters/ws/logic.test.ts
index dd2b773..43cf8ff 100644
--- a/src/adapters/ws/logic.test.ts
+++ b/src/adapters/ws/logic.test.ts
@@ -232,6 +232,38 @@ describe("parseServerMessage", () => {
     });
   });
 
+  it("parses a conversation.open message with a persisted model", () => {
+    const data = JSON.stringify({
+      type: "conversation.open",
+      conversationId: "c1",
+      workspaceId: "w1",
+      model: "openrouter/stealth/ox-alpha",
+    });
+    const result = parseServerMessage(data);
+    expect(result).toEqual({
+      type: "conversation.open",
+      conversationId: "c1",
+      workspaceId: "w1",
+      model: "openrouter/stealth/ox-alpha",
+    });
+  });
+
+  it("omits the model when conversation.open carries a non-string/empty model", () => {
+    const result = parseServerMessage(
+      JSON.stringify({
+        type: "conversation.open",
+        conversationId: "c1",
+        workspaceId: "w1",
+        model: 42,
+      }),
+    );
+    expect(result).toEqual({
+      type: "conversation.open",
+      conversationId: "c1",
+      workspaceId: "w1",
+    });
+  });
+
   it("returns null for conversation.open with missing conversationId", () => {
     expect(
       parseServerMessage(JSON.stringify({ type: "conversation.open", workspaceId: "w1" })),
diff --git a/src/adapters/ws/logic.ts b/src/adapters/ws/logic.ts
index 03ef763..72a6338 100644
--- a/src/adapters/ws/logic.ts
+++ b/src/adapters/ws/logic.ts
@@ -116,10 +116,15 @@ export function parseServerMessage(data: string): WsServerMessage | null {
     case "conversation.open": {
       if (typeof parsed.conversationId !== "string") return null;
       if (typeof parsed.workspaceId !== "string") return null;
+      // Forward the persisted per-conversation model when the backend includes
+      // it, so a client can stamp the opened tab with the conversation's ACTUAL
+      // model (fix-toolcall-duplicate-keys plan Part 4).
+      const model = parsed.model;
       const msg: ConversationOpenMessage = {
         type: "conversation.open",
         conversationId: parsed.conversationId,
         workspaceId: parsed.workspaceId,
+        ...(typeof model === "string" && model.length > 0 ? { model } : {}),
       };
       return msg;
     }