diff --git a/doc/plans/2026-10-25-chat-run-milestone-sleep-audit.md b/doc/plans/2026-10-25-chat-run-milestone-sleep-audit.md
index eeb159a8e41..bac57a86133 100644
--- a/doc/plans/2026-10-25-chat-run-milestone-sleep-audit.md
+++ b/doc/plans/2026-10-25-chat-run-milestone-sleep-audit.md
@@ -627,3 +627,38 @@ Fresh origin/master inspected at `8c6bd5a83b`; reconciliation of the stack remai
 outstanding. Publication/interaction, conversation/configuration and monitor
 receipt producers remain under audit. Production registration and periodic-loop
 removal are still pending, so this checkpoint is not a completed migration PR.
+
+## Monitor receipt ordering checkpoint
+
+The normal native monitor owner does not need another milestone signal when it
+saves a schedule. `PaperclipRunnerToolAuthority.#setTaskMonitor` writes the issue
+monitor and its semantic tool receipt inside the same `#withMutationReceipt`
+transaction. The future deadline cannot be consumed before that commit. A later
+monitor wake's real queue admission already signals the issue scope, and the
+projector validates the committed receipt through `readNativeMonitorSource`.
+Do not add a redundant signal to the generic semantic tool wrapper merely because
+the projector reads a receipt.
+
+The new test executes the actual `set_task_monitor` tool authority, then admits
+the due wake through the real heartbeat queue after the source has finished. It
+checks the queued notice and idle quiet. Source completion is fixture-controlled
+and provider execution is held by task drain; this is receipt/admission/lineage
+coverage, not full monitor scheduler or harness acceptance. Alternate monitor
+wake rewrites and recovery paths still require audit before the whole producer
+family is declared complete.
+
+The initial proposed late-receipt test seeded an admitted wake before creating
+its future monitor, which did not represent the normal ordering. Its first run
+also failed the actual future-deadline validator after advancing the test clock
+(`/tmp/sleep28-monitor-receipt-before.log`). That failure was a fixture problem,
+not a production regression. The replacement follows the real ownership order
+instead of manufacturing a missing signal for an unsupported ordering.
+
+- `/tmp/sleep28-monitor-admission-tests.log`: targeted real producer path passes.
+- `/tmp/sleep28-monitor-final-tests.log`: all 43 milestone worker cases pass.
+- No production monitor code changed; `git diff --check` passed.
+
+Remote gates refreshed at this checkpoint: #17490 at `31bcd1988823` still has
+failed E2E shard 3 and aggregate checks; #17590 at `e501d6c99d72` still has queued
+Paperclip Review; #17592 at `f53ae3d6d27c` still has neutral Paperclip Review.
+These are not claimed ready and no merge was attempted.
diff --git a/server/src/__tests__/chat-run-milestone-work.test.ts b/server/src/__tests__/chat-run-milestone-work.test.ts
index 15e6bb0d3c7..91d9208cd55 100644
--- a/server/src/__tests__/chat-run-milestone-work.test.ts
+++ b/server/src/__tests__/chat-run-milestone-work.test.ts
@@ -21,6 +21,7 @@ import { CHAT_CONTROL_RECOVERY_ADMISSION_KEY, CHAT_CONTROL_RECOVERY_UNRESOLVED_C
 import { heartbeatService } from "../services/heartbeat.js";
 import { commitNativeStatusDecision, dispatchPendingNativeStatusEffects } from "../services/native-runtime/status-decision-committer.js";
 import { claimQueuedNativeReviewRun } from "../services/native-runtime/native-review-dispatch.js";
+import { PaperclipRunnerToolAuthority } from "../services/native-runtime/paperclip-runner-tool-authority.js";
 import { finalizeNativeRun } from "../services/native-runtime/native-run-finalizer.js";
 import { idleWorkSnapshot } from "../services/task-admission.js";
 
@@ -385,6 +386,36 @@ const support = external ? { supported: true } : await getEmbeddedPostgresTestSu
     await service.releaseRunClaimedJustBeforeSuppression(seeded.id);
     await quiet();
   });
+  it("wakes an admitted monitor through its previously committed source receipt", async () => {
+    const source = await run(f, { runtimeMode: "native", nativeIssueId: f.issueId });
+    await db.update(issues).set({ executionRunId: source.id }).where(eq(issues.id, f.issueId));
+    await start(); await flush(); await quiet();
+    const nextCheckAt = new Date(Date.now() + 60_000).toISOString();
+    const authority = new PaperclipRunnerToolAuthority(db, { ...f, runId: source.id });
+    const request = { tool: "set_task_monitor", callId: randomUUID(), arguments: {
+      idempotencyKey: "milestone-monitor", monitor: { nextCheckAt, notes: "Check the saved task" },
+    } };
+    await expect(authority.execute(request)).resolves.toMatchObject({ taskId: f.issueId, replayed: false });
+    // The monitor and source receipt commit together, before due admission. This
+    // fixture finishes the source without executing a harness; admission below
+    // uses the real queue, with execution held by task drain.
+    await db.update(heartbeatRuns).set({ status: "succeeded" }).where(eq(heartbeatRuns.id, source.id));
+    await db.update(issues).set({ executionRunId: null }).where(eq(issues.id, f.issueId));
+    await quiet();
+    const { service, dependencies } = await queue();
+    dependencies.getSchedulingSuppression.mockResolvedValue({ suppressed: true, reason: "task_drain" });
+    const admitted = await service.enqueueWakeup(f.agentId, { source: "automation", reason: "issue_monitor_due",
+      idempotencyKey: `issue-monitor:${f.issueId}:${nextCheckAt}`,
+      payload: { issueId: f.issueId, nextCheckAt },
+      contextSnapshot: { issueId: f.issueId, source: "issue.monitor" },
+      requestedByActorType: "user", requestedByActorId: f.userId,
+    });
+    expect(admitted).toMatchObject({ status: "queued" });
+    await flush();
+    expect((await publications()).map(row => row.idempotencyKey)).toContain(`run:${admitted!.id}:queued:${f.endpointId}`);
+    expect(dependencies.executeRun).not.toHaveBeenCalled();
+    await quiet();
+  });
   async function nativeFixture(phase = "committed") {
     const contractId = randomUUID(), resultId = randomUUID();
     await db.insert(completionContracts).values({