fix(FN-2297): remove duplicate mobile chat access path

- Remove the Chat action from the mobile More sheet and drop the unused onOpenQuickChat prop wiring
- Keep chat access through the dedicated mobile Chat tab and update helper copy in Settings to match
- Update MobileNavBar and mobile feature-access regression tests to assert chat is not listed in More
- Stabilize MissionManager activity pagination test by adding an explicit waitFor timeout

packages/dashboard/app/App.tsx

@@ -773,7 +773,6 @@ function AppInner() {
         onOpenUsage={modalManager.openUsage}
         onViewAllProjects={handleViewAllProjects}
         onRunScript={modalManager.runScript}
-        onOpenQuickChat={() => setQuickChatOpen(true)}
         projectId={currentProject?.id}
         showSkillsTab={skillsEnabled}
         experimentalFeatures={{

packages/dashboard/app/__tests__/mobile-feature-access-regression.test.tsx

@@ -59,7 +59,6 @@ const createDefaultMobileNavProps = () => ({
   activePlanningSessionCount: 0,
   onOpenUsage: vi.fn(),
   onRunScript: vi.fn(),
-  onOpenQuickChat: vi.fn(),
   projectId: "proj_1",
 });
 
@@ -159,18 +158,19 @@ describe("Mobile Feature Access Regression Guard", () => {
     expect(screen.getByTestId("mobile-more-item-schedules")).toBeDefined();
     expect(screen.getByTestId("mobile-more-item-github")).toBeDefined();
     expect(screen.getByTestId("mobile-more-item-usage")).toBeDefined();
-    expect(screen.getByTestId("mobile-more-item-chat")).toBeDefined();
+    expect(screen.queryByTestId("mobile-more-item-chat")).toBeNull();
     expect(screen.getByTestId("mobile-more-item-settings")).toBeDefined();
   });
 
-  it("chat is accessible via more sheet even when FAB is hidden", () => {
+  it("chat is accessible via the bottom nav while remaining absent from the More sheet", () => {
     const props = createDefaultMobileNavProps();
-    render(<MobileNavBar {...props} />);
+    render(<MobileNavBar {...props} view="board" />);
+
+    fireEvent.click(screen.getByTestId("mobile-nav-tab-chat"));
+    expect(props.onChangeView).toHaveBeenCalledWith("chat");
 
     fireEvent.click(screen.getByTestId("mobile-nav-tab-more"));
-    fireEvent.click(screen.getByTestId("mobile-more-item-chat"));
-
-    expect(props.onOpenQuickChat).toHaveBeenCalledOnce();
+    expect(screen.queryByTestId("mobile-more-item-chat")).toBeNull();
   });
 
   it("mobile nav bar renders only on mobile viewport and hides for modal or desktop", () => {

packages/dashboard/app/components/MobileNavBar.tsx

@@ -55,7 +55,6 @@ export interface MobileNavBarProps {
   activePlanningSessionCount?: number;
   onOpenUsage?: () => void;
   onRunScript?: (name: string, command: string) => void;
-  onOpenQuickChat?: () => void;
   projectId?: string;
   onViewAllProjects?: () => void;
   /** Whether to show the skills tab */
@@ -103,7 +102,6 @@ export function MobileNavBar({
   activePlanningSessionCount = 0,
   onOpenUsage,
   onRunScript,
-  onOpenQuickChat,
   projectId,
   onViewAllProjects,
   showSkillsTab,
@@ -511,16 +509,6 @@ export function MobileNavBar({
               <span>Projects</span>
             </button>
 
-            <button
-              type="button"
-              className="mobile-more-item"
-              data-testid="mobile-more-item-chat"
-              onClick={() => handleMoreAction(onOpenQuickChat)}
-            >
-              <MessageSquare />
-              <span>Chat</span>
-            </button>
-
             <button
               type="button"
               className="mobile-more-item"

packages/dashboard/app/components/SettingsModal.tsx

@@ -1046,7 +1046,7 @@ export function SettingsModal({
                 />
                 Show quick chat button
               </label>
-              <small>Show the floating chat button in the dashboard. Chat is still accessible from the More menu.</small>
+              <small>Show the floating chat button in the dashboard. Chat is still accessible from the Chat tab in the mobile navigation.</small>
             </div>
           </>
         );

packages/dashboard/app/components/__tests__/MissionManager.test.tsx

@@ -953,7 +953,7 @@ describe("MissionManager", () => {
     await waitFor(() => {
       expect(screen.getByText("Mission event 65")).toBeDefined();
       expect(screen.queryByTestId("mission-activity-load-more")).toBeNull();
-    });
+    }, { timeout: 5000 });
   });
 
   it("auto-scrolls to latest mission activity on initial load", async () => {

packages/dashboard/app/components/__tests__/MobileNavBar.test.tsx

@@ -47,7 +47,6 @@ const createDefaultProps = () => ({
   onOpenUsage: vi.fn(),
   onViewAllProjects: vi.fn(),
   onRunScript: vi.fn(),
-  onOpenQuickChat: vi.fn(),
   projectId: "proj_1",
 });
 
@@ -231,7 +230,7 @@ describe("MobileNavBar", () => {
     expect(screen.getByTestId("mobile-more-item-github")).toBeDefined();
     expect(screen.getByTestId("mobile-more-item-usage")).toBeDefined();
     expect(screen.getByTestId("mobile-more-item-projects")).toBeDefined();
-    expect(screen.getByTestId("mobile-more-item-chat")).toBeDefined();
+    expect(screen.queryByTestId("mobile-more-item-chat")).toBeNull();
     expect(screen.queryByTestId("mobile-more-item-roadmaps")).toBeNull();
     expect(screen.queryByTestId("mobile-more-item-insights")).toBeNull();
     expect(screen.getByTestId("mobile-more-item-settings")).toBeDefined();
@@ -305,15 +304,16 @@ describe("MobileNavBar", () => {
     expect(props.onViewAllProjects).toHaveBeenCalledOnce();
   });
 
-  it("calls onOpenQuickChat from the Chat more-sheet item", () => {
+  it("chat remains accessible via the primary mobile tab and is absent from More", () => {
     const props = createDefaultProps();
-    const { container } = render(<MobileNavBar {...props} />);
+    const { container } = render(<MobileNavBar {...props} view="board" />);
+
+    fireEvent.click(screen.getByTestId("mobile-nav-tab-chat"));
+    expect(props.onChangeView).toHaveBeenCalledWith("chat");
 
     fireEvent.click(screen.getByTestId("mobile-nav-tab-more"));
-    fireEvent.click(screen.getByTestId("mobile-more-item-chat"));
-
-    expect(container.querySelector(".mobile-more-sheet")).toBeNull();
-    expect(props.onOpenQuickChat).toHaveBeenCalledOnce();
+    expect(container.querySelector(".mobile-more-sheet")).not.toBeNull();
+    expect(screen.queryByTestId("mobile-more-item-chat")).toBeNull();
   });
 
   it("closes sheet on backdrop click", () => {