Add expandable runtime warning details to the work log

apps/server/src/orchestration/Layers/ProviderRuntimeIngestion.ts

@@ -352,7 +352,7 @@ function runtimeEventToActivities(
           createdAt: event.createdAt,
           tone: "info",
           kind: "runtime.warning",
-          summary: "Runtime warning",
+          summary: "Runtime Warning",
           payload: {
             message: truncateDetail(event.payload.message),
             ...(event.payload.detail !== undefined ? { detail: event.payload.detail } : {}),

apps/web/src/components/chat/MessagesTimeline.test.tsx

@@ -131,7 +131,7 @@ describe("MessagesTimeline", () => {
     expect(markup).toContain('data-user-message-collapsed="true"');
     expect(markup).toContain('data-user-message-fade="true"');
     expect(markup).toContain('data-user-message-footer="true"');
-  });
+  }, 20_000);
 
   it("does not render collapse controls for short user messages", async () => {
     const { MessagesTimeline } = await import("./MessagesTimeline");
@@ -144,7 +144,7 @@ describe("MessagesTimeline", () => {
 
     expect(markup).not.toContain("Show full message");
     expect(markup).toContain('data-user-message-collapsible="false"');
-  });
+  }, 20_000);
 
   it("renders inline terminal labels with the composer chip UI", async () => {
     const { MessagesTimeline } = await import("./MessagesTimeline");
@@ -212,6 +212,65 @@ describe("MessagesTimeline", () => {
     expect(markup).toContain("Work log");
   });
 
+  it("renders a warning detail toggle without exposing the details by default", async () => {
+    const { MessagesTimeline } = await import("./MessagesTimeline");
+    const markup = renderToStaticMarkup(
+      <MessagesTimeline
+        {...buildProps()}
+        timelineEntries={[
+          {
+            id: "entry-1",
+            kind: "work",
+            createdAt: "2026-03-17T19:12:28.000Z",
+            entry: {
+              id: "work-1",
+              createdAt: "2026-03-17T19:12:28.000Z",
+              label: "Runtime Warning",
+              tone: "info",
+              runtimeWarningMessage: "Provider got slow",
+              runtimeWarningDetail: {
+                code: "slow_provider",
+                retryInSeconds: 5,
+              },
+            },
+          },
+        ]}
+      />,
+    );
+
+    expect(markup).toContain("Runtime Warning");
+    expect(markup).toContain('aria-label="Show runtime warning details"');
+    expect(markup).not.toContain("slow_provider");
+    expect(markup).not.toContain("Provider got slow");
+    expect(markup).not.toContain(">Warning<");
+  });
+
+  it("renders whitespace-only runtime warning messages as a plain runtime warning row", async () => {
+    const { MessagesTimeline } = await import("./MessagesTimeline");
+    const markup = renderToStaticMarkup(
+      <MessagesTimeline
+        {...buildProps()}
+        timelineEntries={[
+          {
+            id: "entry-1",
+            kind: "work",
+            createdAt: "2026-03-17T19:12:28.000Z",
+            entry: {
+              id: "work-1",
+              createdAt: "2026-03-17T19:12:28.000Z",
+              label: "Runtime Warning",
+              tone: "info",
+              runtimeWarningMessage: "   ",
+            },
+          },
+        ]}
+      />,
+    );
+
+    expect(markup).toContain("Runtime Warning");
+    expect(markup).not.toContain('aria-label="Show runtime warning details"');
+  });
+
   it("formats changed file paths from the workspace root", async () => {
     const { MessagesTimeline } = await import("./MessagesTimeline");
     const markup = renderToStaticMarkup(