diff --git a/tests/runner-e2e/chat-catalog-contract.ts b/tests/runner-e2e/chat-catalog-contract.ts
index fe0a01f0c5e..36e73816d07 100644
--- a/tests/runner-e2e/chat-catalog-contract.ts
+++ b/tests/runner-e2e/chat-catalog-contract.ts
@@ -40,6 +40,7 @@ const originalClockExecutionIds = new Set([
   "chat-features.runner-opencode.local.navigation-preferences.quick-search",
   "chat-features.runner-opencode.local.navigation-preferences.edit-profile",
   "chat-features.runner-opencode.local.navigation-preferences.broken-link",
+  "chat-features.runner-opencode.local.navigation-preferences.dismiss-announcement",
   "chat-features.runner-opencode.local.projects.share-project",
   "chat-features.runner-opencode.local.access.cli-authorization",
   "chat-features.runner-opencode.local.access.other-company",
diff --git a/tests/runner-e2e/chat-catalog-descriptors.json b/tests/runner-e2e/chat-catalog-descriptors.json
index d14ae9b3a2f..6e9416beb07 100644
--- a/tests/runner-e2e/chat-catalog-descriptors.json
+++ b/tests/runner-e2e/chat-catalog-descriptors.json
@@ -3587,7 +3587,7 @@
       "../../ui/src/pages/Projects.tsx",
       "../../ui/src/components/AnnouncementWell.tsx"
     ],
-    "oracleVersion": "paperclip.chat-catalog.announcement-dismissal.v2",
+    "oracleVersion": "paperclip.chat-catalog.announcement-dismissal.v3",
     "expectedRunCount": 1,
     "turnTimeoutMs": 120000,
     "attemptTimeoutMs": 300000,
diff --git a/tests/runner-e2e/chat-catalog-domains/identity-announcement-original-clock.test.ts b/tests/runner-e2e/chat-catalog-domains/identity-announcement-original-clock.test.ts
new file mode 100644
index 00000000000..201edad773e
--- /dev/null
+++ b/tests/runner-e2e/chat-catalog-domains/identity-announcement-original-clock.test.ts
@@ -0,0 +1,56 @@
+import { afterEach, expect, it, vi } from "vitest";
+import type { ChatCatalogContext } from "../chat-catalog-contract.js";
+import { navigationBoundaryIdentityCases } from "./identity-navigation-boundaries.js";
+
+const definition = navigationBoundaryIdentityCases.find(row => row.scenarioId === "navigation-preferences.dismiss-announcement")!;
+const boundary = new Error("First actual publication read; no human action performed");
+function fixture(replyAt = 151_600, deadline: number | undefined = 300_000) {
+  const read = vi.fn().mockRejectedValue(boundary);
+  const ctx = { observationDeadlineAt: deadline,
+    input: { execution: { id: "chat-features.runner-opencode.local.navigation-preferences.dismiss-announcement" },
+      page: { url: () => "http://fixture.invalid/ACO/chats/ceo" }, api: { get: read } },
+    refreshIssue: async () => {},
+    issue: () => ({ conversationState: Date.now() >= replyAt ? "waiting" : "active" }),
+    allRuns: async () => [{ id: "native", status: Date.now() >= replyAt ? "succeeded" : "running" }],
+  } as unknown as ChatCatalogContext;
+  return { ctx, read };
+}
+afterEach(() => vi.useRealTimers());
+it("actual announcement act admits the native reply after151.6s within its original clock before human dismissal", async () => {
+  vi.useFakeTimers(); vi.setSystemTime(0);
+  const { ctx, read } = fixture();
+  const pending = definition.act!(ctx, { publication: { id: "publication" } }).catch(error => error);
+  await vi.advanceTimersByTimeAsync(151_000); expect(read).not.toHaveBeenCalled();
+  await vi.advanceTimersByTimeAsync(1000); expect(await pending).toBe(boundary);
+  expect(read).toHaveBeenCalledExactlyOnceWith("/api/announcements/current");
+  expect(definition.attemptTimeoutMs).toBe(300_000);
+});
+it("consumes elapsed setup instead of granting a fresh wait budget", async () => {
+  vi.useFakeTimers(); vi.setSystemTime(200_000);
+  const { ctx, read } = fixture(280_000, 270_000);
+  const pending = definition.act!(ctx, {}).catch(error => error);
+  await vi.advanceTimersByTimeAsync(70_500);
+  expect(String(await pending)).toContain("Timed out waiting for initial identity response");
+  expect(read).not.toHaveBeenCalled();
+});
+it.each(["failed", "cancelled", "timed_out"])("does not turn a %s native run into a human dismissal", async status => {
+  vi.useFakeTimers(); vi.setSystemTime(0);
+  const { ctx, read } = fixture(); ctx.allRuns = async () => [{ status }] as never;
+  await expect(definition.act!(ctx, {})).rejects.toThrow("Initial response failed");
+  expect(read).not.toHaveBeenCalled();
+});
+it.each([undefined, NaN, Infinity, 200_000, 199_999])("rejects missing or exhausted original deadline %s before observing", async deadline => {
+  vi.useFakeTimers(); vi.setSystemTime(200_000);
+  const { ctx, read } = fixture(0); ctx.observationDeadlineAt = deadline;
+  await expect(definition.act!(ctx, {})).rejects.toThrow("Original native observation budget exhausted or missing");
+  expect(read).not.toHaveBeenCalled();
+});
+it("rejects a successful observation that completes after the original deadline", async () => {
+  vi.useFakeTimers(); vi.setSystemTime(269_000);
+  const { ctx, read } = fixture(0, 270_000);
+  ctx.refreshIssue = async () => { vi.setSystemTime(270_001); };
+  const pending = definition.act!(ctx, {}).catch(error => error);
+  await vi.advanceTimersByTimeAsync(1500);
+  expect(String(await pending)).toContain("Timed out waiting for initial identity response");
+  expect(read).not.toHaveBeenCalled();
+});
diff --git a/tests/runner-e2e/chat-catalog-domains/identity-navigation-boundaries.ts b/tests/runner-e2e/chat-catalog-domains/identity-navigation-boundaries.ts
index 76783899c28..9c137dfe1ef 100644
--- a/tests/runner-e2e/chat-catalog-domains/identity-navigation-boundaries.ts
+++ b/tests/runner-e2e/chat-catalog-domains/identity-navigation-boundaries.ts
@@ -122,9 +122,9 @@ export const navigationBoundaryIdentityCases: readonly ChatCatalogCase[] = [
         observerBeforePublicationId: observerPublication?.id, invalidAuditCompanyStatus };
     } catch (error) { try { await observer.dispose(); } finally { observers.delete(ctx); const id = otherCompanies.get(ctx); if (id) await ctx.input.api.delete(`/api/companies/${id}`, { allowNotFound: true }); otherCompanies.delete(ctx); } throw error; }
   }, gradeNavigationBoundary, {
-    sourceFiles: [...sources, "chat-announcement-fixture.ts", "harness-env.ts", "../../packages/shared/src/announcements.ts", "../../server/src/services/announcement-feed.ts", "../../server/src/routes/announcements.ts", "../../ui/src/pages/Projects.tsx", "../../ui/src/components/AnnouncementWell.tsx"], authentication: "human-session", oracleVersion: "paperclip.chat-catalog.announcement-dismissal.v2",
+    sourceFiles: [...sources, "chat-announcement-fixture.ts", "harness-env.ts", "../../packages/shared/src/announcements.ts", "../../server/src/services/announcement-feed.ts", "../../server/src/routes/announcements.ts", "../../ui/src/pages/Projects.tsx", "../../ui/src/components/AnnouncementWell.tsx"], authentication: "human-session", oracleVersion: "paperclip.chat-catalog.announcement-dismissal.v3",
     async act(ctx, state) {
-      await waitForReply(ctx); const publication = state.publication as Publication; const source = ctx.input.page.url();
+      await waitForReply(ctx, chatCatalogOriginalPhaseDeadline(ctx)); const publication = state.publication as Publication; const source = ctx.input.page.url();
       state.beforeHumanPublicationId = (await ctx.input.api.get<Publication | null>("/api/announcements/current"))?.id;
       state.agentDismissStatus = await probeAgentPermission(ctx, `/api/announcements/${encodeURIComponent(publication.id)}/dismiss`, "POST", { companyId: ctx.input.fixtures.company.id });
       const response = ctx.input.page.waitForResponse(row => row.request().method() === "POST" && new URL(row.url()).pathname === `/api/announcements/${publication.id}/dismiss`);