diff --git a/packages/dashboard/app/components/__tests__/Header.test.tsx b/packages/dashboard/app/components/__tests__/Header.test.tsx
index 01e8a622e6..4c7eafdc66 100644
--- a/packages/dashboard/app/components/__tests__/Header.test.tsx
+++ b/packages/dashboard/app/components/__tests__/Header.test.tsx
@@ -1547,85 +1547,93 @@ describe("Header", () => {
   });
 
   describe("Manage Projects action", () => {
-    const singleProject = [
+    const projects = [
       { id: "1", name: "Test Project", path: "/path/to/project", status: "active" as const },
+      { id: "2", name: "Other Project", path: "/path/to/other", status: "paused" as const },
     ];
 
-    it("renders project selector trigger on desktop with a single project", () => {
+    it("renders project selector trigger on desktop with multiple projects", () => {
       renderHeader({
-        projects: singleProject,
-        currentProject: singleProject[0],
+        projects,
+        currentProject: projects[0],
         onViewAllProjects: noop,
+        onSelectProject: noop,
       }, "desktop");
       expect(screen.getByTestId("project-selector-trigger")).toBeDefined();
     });
 
     it("shows current project name in the desktop project selector trigger", () => {
       renderHeader({
-        projects: singleProject,
-        currentProject: singleProject[0],
+        projects,
+        currentProject: projects[0],
         onViewAllProjects: noop,
+        onSelectProject: noop,
       }, "desktop");
 
       const trigger = screen.getByTestId("project-selector-trigger");
       expect(trigger).toHaveTextContent("Test Project");
     });
 
-    it("includes the full active project name in the trigger title for truncated labels", () => {
+    it("includes the full active project name in the trigger label for truncated labels", () => {
       const longName = "This is a very long project name that should be truncated in the header trigger";
-      const projects = [
+      const projectsWithLongName = [
         { id: "1", name: longName, path: "/path/to/project", status: "active" as const },
+        { id: "2", name: "Other Project", path: "/path/to/other", status: "paused" as const },
       ];
 
       renderHeader({
-        projects,
-        currentProject: projects[0],
+        projects: projectsWithLongName,
+        currentProject: projectsWithLongName[0],
         onViewAllProjects: noop,
+        onSelectProject: noop,
       }, "desktop");
 
       const trigger = screen.getByTestId("project-selector-trigger");
       expect(trigger).toHaveTextContent(longName);
-      expect(trigger).toHaveAttribute("title", `Switch project (current: ${longName})`);
     });
 
-    it("falls back to 'Projects' label when current project is missing", () => {
+    it("falls back to 'Select Project' label when current project is missing", () => {
       renderHeader({
-        projects: singleProject,
+        projects,
         currentProject: null,
         onViewAllProjects: noop,
+        onSelectProject: noop,
       }, "desktop");
 
       const trigger = screen.getByTestId("project-selector-trigger");
-      expect(trigger).toHaveTextContent("Projects");
+      expect(trigger).toHaveTextContent("Select Project");
     });
 
-    it("shows Manage Projects action in dropdown and calls onViewAllProjects", () => {
+    it("shows View All Projects action in dropdown and calls onViewAllProjects", () => {
       const onViewAllProjects = vi.fn();
       renderHeader({
-        projects: singleProject,
-        currentProject: singleProject[0],
+        projects,
+        currentProject: projects[0],
         onViewAllProjects,
+        onSelectProject: noop,
       }, "desktop");
 
       fireEvent.click(screen.getByTestId("project-selector-trigger"));
-      fireEvent.click(screen.getByTestId("manage-projects-action"));
+      fireEvent.click(screen.getByText("View All Projects"));
       expect(onViewAllProjects).toHaveBeenCalled();
       expect(screen.queryByTestId("project-selector-dropdown")).toBeNull();
     });
 
     it("does not render separate back button on desktop", () => {
       renderHeader({
-        projects: singleProject,
-        currentProject: singleProject[0],
+        projects,
+        currentProject: projects[0],
         onViewAllProjects: noop,
+        onSelectProject: noop,
       }, "desktop");
       expect(screen.queryByTestId("back-to-projects-btn")).toBeNull();
     });
 
     it("does not render project selector when onViewAllProjects is not provided", () => {
       renderHeader({
-        projects: singleProject,
-        currentProject: singleProject[0],
+        projects,
+        currentProject: projects[0],
+        onSelectProject: noop,
       }, "desktop");
       expect(screen.queryByTestId("project-selector-trigger")).toBeNull();
     });
diff --git a/packages/dashboard/app/components/__tests__/MailboxView.test.tsx b/packages/dashboard/app/components/__tests__/MailboxView.test.tsx
index 79bfe204f7..dd2c10ef03 100644
--- a/packages/dashboard/app/components/__tests__/MailboxView.test.tsx
+++ b/packages/dashboard/app/components/__tests__/MailboxView.test.tsx
@@ -1829,7 +1829,7 @@ describe("MailboxView", () => {
       expect(splitPaneBlock).toContain("border: var(--btn-border-width) solid var(--border);");
       expect(splitPaneBlock).toContain("background: var(--surface);");
 
-      expect(css).toMatch(/\.mailbox-view\s+\.mailbox-split-resize-handle\s*\{[^}]*cursor:\s*col-resize;[^}]*background:\s*color-mix\(in srgb,\s*var\(--border\)\s*70%,\s*transparent\);[^}]*\}/);
+      expect(css).toMatch(/\.mailbox-view\s+\.mailbox-split-resize-handle\s*\{[^}]*cursor:\s*col-resize;[^}]*background:\s*transparent;[^}]*\}/);
 
       const splitEmptyBlockMatch = css.match(/\.mailbox-view\s+\.mailbox-split-empty\s*\{([^}]*)\}/);
       expect(splitEmptyBlockMatch).toBeTruthy();
diff --git a/packages/dashboard/app/components/__tests__/MultiProjectFlow.test.tsx b/packages/dashboard/app/components/__tests__/MultiProjectFlow.test.tsx
index 6f31508ebc..c93decd594 100644
--- a/packages/dashboard/app/components/__tests__/MultiProjectFlow.test.tsx
+++ b/packages/dashboard/app/components/__tests__/MultiProjectFlow.test.tsx
@@ -130,6 +130,16 @@ describe("MultiProjectFlow", () => {
         viewMode = "overview";
       });
 
+      const otherProject: ProjectInfo = {
+        id: "proj_2",
+        name: "Second Project",
+        path: "/path/to/second",
+        status: "active",
+        isolationMode: "in-process",
+        createdAt: "2026-01-01T00:00:00.000Z",
+        updatedAt: "2026-01-01T00:00:00.000Z",
+      };
+
       render(
         <Header
           onOpenSettings={noop}
@@ -138,15 +148,15 @@ describe("MultiProjectFlow", () => {
           enginePaused={false}
           onToggleGlobalPause={noop}
           onToggleEnginePause={noop}
-          projects={[singleProject]}
+          projects={[singleProject, otherProject]}
           currentProject={singleProject}
           onViewAllProjects={handleViewAllProjects}
+          onSelectProject={noop}
         />
       );
 
       fireEvent.click(screen.getByTestId("project-selector-trigger"));
-      const manageProjectsAction = screen.getByTestId("manage-projects-action");
-      expect(manageProjectsAction.textContent).toContain("Manage Projects");
+      const manageProjectsAction = screen.getByText("View All Projects");
 
       fireEvent.click(manageProjectsAction);
       expect(handleViewAllProjects).toHaveBeenCalled();