diff --git a/apps/app/src/features/projects/project-session-row.tsx b/apps/app/src/features/projects/project-session-row.tsx
index e23803360..8cb608cb4 100644
--- a/apps/app/src/features/projects/project-session-row.tsx
+++ b/apps/app/src/features/projects/project-session-row.tsx
@@ -29,8 +29,8 @@ export function ProjectSessionRow({
           })
         }
       >
-        <span className="truncate">{session.title ?? "New chat"}</span>
         <SessionStatusIndicator phase={session.status?.phase} />
+        <span className="min-w-0 flex-1 truncate">{session.title ?? "New chat"}</span>
       </SidebarMenuButton>
       <SessionActionsMenu isActive={isActive} session={session} />
     </SidebarMenuItem>
diff --git a/apps/app/src/features/projects/session-status-indicator.test.tsx b/apps/app/src/features/projects/session-status-indicator.test.tsx
new file mode 100644
index 000000000..fee6d070b
--- /dev/null
+++ b/apps/app/src/features/projects/session-status-indicator.test.tsx
@@ -0,0 +1,83 @@
+// @vitest-environment jsdom
+import { act, createElement } from "react";
+import { createRoot, type Root } from "react-dom/client";
+import { afterEach, describe, expect, it } from "vitest";
+
+import { SessionStatusIndicator } from "./session-status-indicator";
+
+(globalThis as unknown as { IS_REACT_ACT_ENVIRONMENT: boolean }).IS_REACT_ACT_ENVIRONMENT = true;
+
+let root: Root | undefined;
+let container: HTMLDivElement | undefined;
+
+const renderIndicator = (phase: Parameters<typeof SessionStatusIndicator>[0]["phase"]) => {
+  container = document.createElement("div");
+  document.body.append(container);
+  root = createRoot(container);
+  act(() => {
+    root?.render(createElement(SessionStatusIndicator, { phase }));
+  });
+  return container;
+};
+
+afterEach(() => {
+  act(() => root?.unmount());
+  container?.remove();
+  root = undefined;
+  container = undefined;
+});
+
+describe("SessionStatusIndicator", () => {
+  it("shows an accessible spinner while running", () => {
+    const node = renderIndicator("running");
+    const slot = node.querySelector<HTMLSpanElement>("[data-slot=session-status]");
+    const loader = node.querySelector("[role=status]");
+    expect(slot?.dataset.state).toBe("loading");
+    expect(slot?.getAttribute("title")).toBe("A turn is running in this session");
+    expect(loader).not.toBeNull();
+    expect(loader?.getAttribute("aria-label")).toBe("A turn is running in this session");
+  });
+
+  it("shows an accessible amber dot while waiting for user action", () => {
+    const node = renderIndicator("requires_action");
+    const slot = node.querySelector<HTMLSpanElement>("[data-slot=session-status]");
+    const dot = slot?.querySelector<HTMLSpanElement>("span");
+    expect(slot?.getAttribute("role")).toBe("img");
+    expect(slot?.getAttribute("aria-label")).toBe("Waiting for your action");
+    expect(slot?.getAttribute("title")).toBe("Waiting for your action");
+    expect(dot?.className).toContain("bg-warning");
+    expect(dot?.getAttribute("aria-hidden")).toBe("true");
+  });
+
+  it("shows an accessible amber dot when recovery is required", () => {
+    const node = renderIndicator("recovery_required");
+    const slot = node.querySelector<HTMLSpanElement>("[data-slot=session-status]");
+    const dot = slot?.querySelector<HTMLSpanElement>("span");
+    expect(slot?.getAttribute("role")).toBe("img");
+    expect(slot?.getAttribute("aria-label")).toBe("This session needs recovery");
+    expect(slot?.getAttribute("title")).toBe("This session needs recovery");
+    expect(dot?.className).toContain("bg-warning");
+    expect(dot?.getAttribute("aria-hidden")).toBe("true");
+  });
+
+  it("shows an accessible red dot when the session crashed", () => {
+    const node = renderIndicator("crashed");
+    const slot = node.querySelector<HTMLSpanElement>("[data-slot=session-status]");
+    const dot = slot?.querySelector<HTMLSpanElement>("span");
+    expect(slot?.getAttribute("role")).toBe("img");
+    expect(slot?.getAttribute("aria-label")).toBe("Session crashed");
+    expect(slot?.getAttribute("title")).toBe("Session crashed");
+    expect(dot?.className).toContain("bg-destructive");
+    expect(dot?.getAttribute("aria-hidden")).toBe("true");
+  });
+
+  it("reserves a fixed slot for idle or missing status", () => {
+    for (const phase of ["idle", undefined] as const) {
+      const node = renderIndicator(phase);
+      const slot = node.querySelector("span");
+      expect(slot?.className).toContain("size-[1em]");
+      expect(slot?.className).toContain("shrink-0");
+      expect(slot?.querySelector("span")).toBeNull();
+    }
+  });
+});
diff --git a/apps/app/src/features/projects/session-status-indicator.tsx b/apps/app/src/features/projects/session-status-indicator.tsx
index 7dfb53bca..051af4f3d 100644
--- a/apps/app/src/features/projects/session-status-indicator.tsx
+++ b/apps/app/src/features/projects/session-status-indicator.tsx
@@ -1,9 +1,9 @@
 import type { SessionPhase } from "@vibest/contract";
 import { Spinner } from "@vibest/ui/components/spinner";
 
-const SLOT_CLASS = "ms-auto inline-flex size-3 shrink-0 items-center justify-center";
+const SLOT_CLASS = "inline-flex size-[1em] shrink-0 items-center justify-center";
 
-/** Server-derived session phase after the title. Idle rows omit the slot. */
+/** Server-derived session phase before the title; slot is 1em so it matches the title. */
 export function SessionStatusIndicator({ phase }: { readonly phase: SessionPhase | undefined }) {
   switch (phase) {
     case "running":
@@ -14,40 +14,51 @@ export function SessionStatusIndicator({ phase }: { readonly phase: SessionPhase
           data-state="loading"
           title="A turn is running in this session"
         >
-          <Spinner className="size-3" aria-label="A turn is running in this session" />
+          <Spinner className="size-[1em]" aria-label="A turn is running in this session" />
         </span>
       );
     case "requires_action":
       return (
         <span
           className={SLOT_CLASS}
-          aria-hidden
+          aria-label="Waiting for your action"
           data-slot="session-status"
           data-state="requires-action"
+          role="img"
+          title="Waiting for your action"
         >
-          <span className="bg-warning size-2 rounded-full" title="Waiting for your action" />
+          <span className="bg-warning size-2 rounded-full" aria-hidden />
         </span>
       );
     case "recovery_required":
       return (
         <span
           className={SLOT_CLASS}
-          aria-hidden
+          aria-label="This session needs recovery"
           data-slot="session-status"
           data-state="recovery-required"
+          role="img"
+          title="This session needs recovery"
         >
-          <span className="bg-warning size-2 rounded-full" title="This session needs recovery" />
+          <span className="bg-warning size-2 rounded-full" aria-hidden />
         </span>
       );
     case "crashed":
       return (
-        <span className={SLOT_CLASS} aria-hidden data-slot="session-status" data-state="crashed">
-          <span className="bg-destructive size-2 rounded-full" title="Session crashed" />
+        <span
+          className={SLOT_CLASS}
+          aria-label="Session crashed"
+          data-slot="session-status"
+          data-state="crashed"
+          role="img"
+          title="Session crashed"
+        >
+          <span className="bg-destructive size-2 rounded-full" aria-hidden />
         </span>
       );
     case "idle":
     case undefined:
-      return null;
+      return <span className={SLOT_CLASS} aria-hidden data-slot="session-status" />;
     default: {
       const exhaustive: never = phase;
       return exhaustive;
diff --git a/apps/app/vitest.config.ts b/apps/app/vitest.config.ts
index 0d35ca79d..1392dde70 100644
--- a/apps/app/vitest.config.ts
+++ b/apps/app/vitest.config.ts
@@ -1,8 +1,10 @@
 import url from "node:url";
 
+import react from "@vitejs/plugin-react";
 import { defineConfig } from "vitest/config";
 
 export default defineConfig({
+  plugins: [react()],
   resolve: {
     alias: { "@": url.fileURLToPath(new URL("./src", import.meta.url)) },
   },