Use current panel for chat resume selection

src/features/chat/view.ts

@@ -78,6 +78,7 @@ export interface CodexChatHost {
   readonly vaultPath: string;
   openThreadInNewView(threadId: string): Promise<unknown>;
   openThreadInAvailableView(threadId: string): Promise<void>;
+  focusThreadInOpenView(threadId: string): Promise<boolean>;
   openTurnDiff(state: ChatTurnDiffViewState): Promise<void>;
   notifyThreadArchived(threadId: string): void;
   notifyThreadRenamed(threadId: string, name: string): void;
@@ -1252,7 +1253,8 @@ export class CodexChatView extends ItemView {
       this.addSystemMessage("Finish or interrupt the current turn before switching threads.");
       return;
     }
-    await this.plugin.openThreadInAvailableView(threadId);
+    if (await this.plugin.focusThreadInOpenView(threadId)) return;
+    await this.resumeThread(threadId);
   }
 
   private closeToolbarPanelOnOutsidePointer(event: PointerEvent): void {

tests/features/chat/view-connection.test.ts

@@ -220,10 +220,10 @@ describe("CodexChatView connection lifecycle", () => {
     expect(client.startTurn).toHaveBeenCalledWith("thread-new", "/vault", [{ type: "text", text: "hello", text_elements: [] }]);
   });
 
-  it("routes slash resume through the shared panel selection path", async () => {
-    const openThreadInAvailableView = vi.fn().mockResolvedValue(undefined);
+  it("focuses an open panel instead of resuming a duplicate slash resume thread", async () => {
+    const focusThreadInOpenView = vi.fn().mockResolvedValue(true);
     const host = chatHost({
-      openThreadInAvailableView,
+      focusThreadInOpenView,
     });
     connectionMock.state.client = connectedClient({
       listThreads: vi.fn().mockResolvedValue({ data: [threadFixture("thread-1")] }),
@@ -234,23 +234,38 @@ describe("CodexChatView connection lifecycle", () => {
     view.setComposerText("/resume thread-1");
     await (view as unknown as { submitComposerAction: () => Promise<void> }).submitComposerAction();
 
-    expect(openThreadInAvailableView).toHaveBeenCalledWith("thread-1");
+    expect(focusThreadInOpenView).toHaveBeenCalledWith("thread-1");
     expect(connectionMock.state.client["resumeThread"]).not.toHaveBeenCalled();
   });
 
+  it("resumes slash resume threads in the current panel when they are not already open", async () => {
+    const focusThreadInOpenView = vi.fn().mockResolvedValue(false);
+    const client = connectedClient({
+      listThreads: vi.fn().mockResolvedValue({ data: [threadFixture("thread-1")] }),
+      threadTurnsList: vi.fn().mockResolvedValue({ data: [turnWithUserMessage("restored prompt")], nextCursor: null }),
+    });
+    connectionMock.state.client = client;
+    const view = await chatView({
+      host: chatHost({
+        focusThreadInOpenView,
+      }),
+    });
+
+    await view.connect();
+    view.setComposerText("/resume thread-1");
+    await (view as unknown as { submitComposerAction: () => Promise<void> }).submitComposerAction();
+
+    expect(focusThreadInOpenView).toHaveBeenCalledWith("thread-1");
+    expect(client.resumeThread).toHaveBeenCalledWith("thread-1", "/vault");
+  });
+
   it("keeps resumed messages pinned to bottom after slash resume in the same empty panel", async () => {
     const client = connectedClient({
       listThreads: vi.fn().mockResolvedValue({ data: [threadFixture("thread-1")] }),
       threadTurnsList: vi.fn().mockResolvedValue({ data: [turnWithUserMessage("restored prompt")], nextCursor: null }),
     });
     connectionMock.state.client = client;
-    const view = await chatView({
-      host: chatHost({
-        openThreadInAvailableView: async (threadId) => {
-          await view.openThread(threadId);
-        },
-      }),
-    });
+    const view = await chatView();
 
     await view.onOpen();
     await view.connect();
@@ -549,6 +564,7 @@ function chatHost(overrides: Partial<CodexChatHost> = {}): CodexChatHost {
     vaultPath: "/vault",
     openThreadInNewView: vi.fn(),
     openThreadInAvailableView: vi.fn().mockResolvedValue(undefined),
+    focusThreadInOpenView: vi.fn().mockResolvedValue(false),
     openTurnDiff: vi.fn(),
     notifyThreadArchived: vi.fn(),
     notifyThreadRenamed: vi.fn(),

tests/main.test.ts

@@ -234,9 +234,9 @@ function chatView(CodexChatViewCtor: typeof CodexChatView, leaf: TestLeaf) {
     {
       settings: { ...DEFAULT_SETTINGS, codexPath: "codex", sendShortcut: "enter" },
       vaultPath: "/vault",
-      openNewPanel: vi.fn(),
       openThreadInNewView: vi.fn(),
       openThreadInAvailableView: vi.fn(),
+      focusThreadInOpenView: vi.fn(),
       openTurnDiff: vi.fn(),
       notifyThreadArchived: vi.fn(),
       notifyThreadRenamed: vi.fn(),