diff --git a/packages/server/src/server/agent/providers/omp/agent.test.ts b/packages/server/src/server/agent/providers/omp/agent.test.ts
index c0e6193bb5..a1dc9130a8 100644
--- a/packages/server/src/server/agent/providers/omp/agent.test.ts
+++ b/packages/server/src/server/agent/providers/omp/agent.test.ts
@@ -215,6 +215,55 @@ function createToolCatalog(): PaseoToolCatalog {
 }
 
 describe("OMP agent client and session", () => {
+  test("failed manual compact closes its progress row and shows the error", async () => {
+    const omp = new OmpHarness();
+    await omp.start();
+
+    const events = await omp.compact({}, new Error("compaction refused"));
+
+    expect(events).toEqual([
+      expect.objectContaining({
+        item: { type: "compaction", status: "loading", trigger: "manual" },
+      }),
+      expect.objectContaining({
+        item: { type: "compaction", status: "completed", trigger: "manual" },
+      }),
+      expect.objectContaining({
+        item: {
+          type: "assistant_message",
+          text: "[Error] Failed to compact context: compaction refused",
+        },
+      }),
+    ]);
+  });
+
+  test("manual compact shows its progress and publishes the compacted context usage", async () => {
+    const omp = new OmpHarness();
+    await omp.start();
+
+    const events = await omp.compact({
+      contextUsage: { tokens: 13_447, contextWindow: 272_000 },
+    });
+
+    expect(events).toEqual([
+      expect.objectContaining({
+        type: "timeline",
+        item: { type: "compaction", status: "loading", trigger: "manual" },
+      }),
+      expect.objectContaining({
+        type: "timeline",
+        item: { type: "compaction", status: "completed", trigger: "manual" },
+      }),
+      expect.objectContaining({
+        type: "usage_updated",
+        usage: expect.objectContaining({
+          contextWindowUsedTokens: 13_447,
+          contextWindowMaxTokens: 272_000,
+        }),
+      }),
+    ]);
+  });
+
   test("owns launch configuration and registers native host tools", async () => {
     const omp = new OmpHarness();
     await omp.start({ modeId: "ask" }, createToolCatalog());
diff --git a/packages/server/src/server/agent/providers/omp/agent.ts b/packages/server/src/server/agent/providers/omp/agent.ts
index 2dc6c58dea..5413364cdb 100644
--- a/packages/server/src/server/agent/providers/omp/agent.ts
+++ b/packages/server/src/server/agent/providers/omp/agent.ts
@@ -714,9 +714,7 @@ export class OmpAgentSession implements AgentSession {
   private readonly pendingPromptResults = new Map<string, OmpPromptResult>();
   private pendingNoTurnCompletionAbort: AbortController | null = null;
   private lastKnownThinkingOptionId: string | null;
-  private outOfBandCompactionEmit: ((event: AgentStreamEvent) => void) | null = null;
-  private outOfBandCompactionStarted = false;
-  private outOfBandCompactionCompleted = false;
+  private manualCompactionRunning = false;
   private commandCache: AgentSlashCommand[] | null = null;
   private readonly subagentIndex = new OmpSubagentIndex();
   private readonly subagentCardTracker: OmpSubagentCardTracker;
@@ -1407,30 +1405,24 @@ export class OmpAgentSession implements AgentSession {
     customInstructions: string | undefined,
     emit: (event: AgentStreamEvent) => void,
   ): Promise<void> {
-    if (this.outOfBandCompactionEmit) {
+    if (this.manualCompactionRunning) {
       throw new Error("An OMP compact command is already running");
     }
-    this.outOfBandCompactionEmit = emit;
-    this.outOfBandCompactionStarted = false;
-    this.outOfBandCompactionCompleted = false;
+    // OMP answers a manual compact with its RPC response alone, without
+    // compaction_start or compaction_end, so the request owns both rows.
+    this.manualCompactionRunning = true;
+    const emitCompaction = (status: "loading" | "completed") =>
+      emit({
+        type: "timeline",
+        provider: this.provider,
+        item: { type: "compaction", status, trigger: "manual" },
+      });
+    emitCompaction("loading");
     try {
       await this.runtimeSession.compact(customInstructions);
     } catch (error) {
       const message = error instanceof Error ? error.message : String(error);
-      if (
-        this.outOfBandCompactionEmit === emit &&
-        this.outOfBandCompactionStarted &&
-        !this.outOfBandCompactionCompleted
-      ) {
-        this.emitCompactionTimeline({
-          turnId: undefined,
-          item: {
-            type: "compaction",
-            status: "completed",
-            trigger: "manual",
-          },
-        });
-      }
+      emitCompaction("completed");
       emit({
         type: "timeline",
         provider: this.provider,
@@ -1439,13 +1431,12 @@ export class OmpAgentSession implements AgentSession {
           text: `[Error] Failed to compact context: ${message}`,
         },
       });
+      return;
     } finally {
-      if (this.outOfBandCompactionEmit === emit && !this.outOfBandCompactionStarted) {
-        this.outOfBandCompactionEmit = null;
-        this.outOfBandCompactionStarted = false;
-        this.outOfBandCompactionCompleted = false;
-      }
+      this.manualCompactionRunning = false;
     }
+    emitCompaction("completed");
+    await this.usagePoller.refresh();
   }
 
   private async executeAutoCompactCommand(
@@ -1853,24 +1844,8 @@ export class OmpAgentSession implements AgentSession {
         return;
       }
       case "compaction_start":
-        this.emitCompactionTimeline({
-          turnId,
-          item: {
-            type: "compaction",
-            status: "loading",
-            trigger: event.reason === "manual" ? "manual" : "auto",
-          },
-        });
-        return;
       case "compaction_end":
-        this.emitCompactionTimeline({
-          turnId,
-          item: {
-            type: "compaction",
-            status: "completed",
-            trigger: event.reason === "manual" ? "manual" : "auto",
-          },
-        });
+        this.handleCompactionEvent(event, turnId);
         return;
       case "agent_end": {
         const messages = event.messages ?? [];
@@ -1924,35 +1899,24 @@ export class OmpAgentSession implements AgentSession {
     }
   }
 
-  private emitCompactionTimeline(input: {
-    turnId: string | undefined;
-    item: Extract<AgentStreamEvent, { type: "timeline" }>["item"];
-  }): void {
-    const emitOutOfBand = this.outOfBandCompactionEmit;
-    if (emitOutOfBand && input.item.type === "compaction") {
-      if (input.item.status === "loading") {
-        this.outOfBandCompactionStarted = true;
-      }
-      if (input.item.status === "completed") {
-        this.outOfBandCompactionCompleted = true;
-      }
-    }
-    const event: AgentStreamEvent = {
-      type: "timeline",
-      provider: this.provider,
-      ...(emitOutOfBand ? {} : { turnId: input.turnId }),
-      item: input.item,
-    };
-    if (emitOutOfBand) {
-      emitOutOfBand(event);
-      if (input.item.type === "compaction" && input.item.status === "completed") {
-        this.outOfBandCompactionEmit = null;
-        this.outOfBandCompactionStarted = false;
-        this.outOfBandCompactionCompleted = false;
-      }
+  private handleCompactionEvent(
+    event: Extract<OmpAgentSessionEvent, { type: "compaction_start" | "compaction_end" }>,
+    turnId: string | undefined,
+  ): void {
+    // A manual compact emits its own rows around the request.
+    if (this.manualCompactionRunning) {
       return;
     }
-    this.emit(event);
+    this.emit({
+      type: "timeline",
+      provider: this.provider,
+      turnId,
+      item: {
+        type: "compaction",
+        status: event.type === "compaction_start" ? "loading" : "completed",
+        trigger: event.reason === "manual" ? "manual" : "auto",
+      },
+    });
   }
 
   private handleMessageUpdate(
diff --git a/packages/server/src/server/agent/providers/omp/test-utils/fake-omp.ts b/packages/server/src/server/agent/providers/omp/test-utils/fake-omp.ts
index 403a389647..58688c245d 100644
--- a/packages/server/src/server/agent/providers/omp/test-utils/fake-omp.ts
+++ b/packages/server/src/server/agent/providers/omp/test-utils/fake-omp.ts
@@ -168,7 +168,6 @@ export class FakeOmpSession implements OmpRuntimeSession {
   subagents: FakeOmpSubagentSnapshot[] = [];
   readonly subagentSubscriptionErrors = new Map<FakeOmpSubagentSubscriptionLevel, Error>();
   compactError: Error | null = null;
-  emitCompactEnd = true;
   getStateError: Error | null = null;
   promptAck: OmpPromptAck = {};
   branchResponse: { text?: string; cancelled?: boolean } = { text: "" };
@@ -266,11 +265,8 @@ export class FakeOmpSession implements OmpRuntimeSession {
   }
 
   async compact(customInstructions?: string): Promise<void> {
+    // Like OMP, answer a manual compact with the response alone, no compaction events.
     this.compactRequests.push(customInstructions === undefined ? {} : { customInstructions });
-    this.emit({ type: "compaction_start", reason: "manual" });
-    if (this.emitCompactEnd) {
-      this.emit({ type: "compaction_end", reason: "manual" });
-    }
     if (this.compactError) {
       throw this.compactError;
     }
diff --git a/packages/server/src/server/agent/providers/omp/test-utils/omp-harness.ts b/packages/server/src/server/agent/providers/omp/test-utils/omp-harness.ts
index 1820c187c9..8be53f1742 100644
--- a/packages/server/src/server/agent/providers/omp/test-utils/omp-harness.ts
+++ b/packages/server/src/server/agent/providers/omp/test-utils/omp-harness.ts
@@ -19,7 +19,12 @@ import {
   type OmpProviderIdleScheduler,
 } from "../agent.js";
 import type { OmpUsagePollScheduler } from "../usage-poller.js";
-import type { OmpAgentMessage, OmpRpcSlashCommand, OmpRuntimeEvent } from "../rpc-types.js";
+import type {
+  OmpAgentMessage,
+  OmpRpcSlashCommand,
+  OmpRuntimeEvent,
+  OmpSessionStats,
+} from "../rpc-types.js";
 import { FakeOmp } from "./fake-omp.js";
 
 const CWD = "/tmp/paseo-omp-agent-test";
@@ -169,6 +174,18 @@ export class OmpHarness {
     return events;
   }
 
+  async compact(statsAfter: OmpSessionStats, error?: Error): Promise<AgentStreamEvent[]> {
+    const handler = this.requireSession().tryHandleOutOfBand("/compact");
+    if (!handler) throw new Error("OMP session did not handle /compact out-of-band");
+    const runtime = this.omp.latestSession();
+    const sessionEventCount = this.events.length;
+    const emitted: AgentStreamEvent[] = [];
+    runtime.stats = statsAfter;
+    runtime.compactError = error ?? null;
+    await handler.run({ emit: (event) => emitted.push(event) });
+    return [...emitted, ...this.events.slice(sessionEventCount)];
+  }
+
   async runPrompt(
     input: string,
     output: string,
diff --git a/packages/server/src/server/agent/providers/omp/usage-poller.test.ts b/packages/server/src/server/agent/providers/omp/usage-poller.test.ts
index 9750ec59ef..56b9dc667a 100644
--- a/packages/server/src/server/agent/providers/omp/usage-poller.test.ts
+++ b/packages/server/src/server/agent/providers/omp/usage-poller.test.ts
@@ -36,6 +36,27 @@ function deferred<T>() {
 }
 
 describe("OMP usage poller", () => {
+  test("refresh publishes usage without ending an active turn's polling", async () => {
+    const scheduler = new ManualPollScheduler();
+    const used: Array<number | undefined> = [];
+    let stats: OmpSessionStats = { contextUsage: { contextWindow: 200_000, tokens: 9_000 } };
+    const poller = new OmpUsagePoller({
+      scheduler,
+      readStats: async () => stats,
+      onUsage: (update) => used.push(update.contextWindowUsedTokens),
+      onPollError: (error) => {
+        throw error;
+      },
+    });
+
+    poller.startTurn();
+    stats = { contextUsage: { contextWindow: 200_000, tokens: 2_000 } };
+    await poller.refresh();
+
+    expect(used).toEqual([2_000]);
+    expect(scheduler.activePollCount()).toBe(1);
+  });
+
   test("emits only changed usage while active", async () => {
     const scheduler = new ManualPollScheduler();
     const updates: AgentUsage[] = [];
diff --git a/packages/server/src/server/agent/providers/omp/usage-poller.ts b/packages/server/src/server/agent/providers/omp/usage-poller.ts
index 4e41708b5a..bc3bc1c968 100644
--- a/packages/server/src/server/agent/providers/omp/usage-poller.ts
+++ b/packages/server/src/server/agent/providers/omp/usage-poller.ts
@@ -105,6 +105,17 @@ export class OmpUsagePoller {
     this.publishUsage(usage, turnId);
   }
 
+  async refresh(): Promise<void> {
+    let usage: AgentUsage | undefined;
+    try {
+      usage = toAgentUsage(await this.options.readStats());
+    } catch (error) {
+      if (!this.closed) this.options.onPollError(error);
+      return;
+    }
+    if (!this.closed) this.publishUsage(usage);
+  }
+
   close(): void {
     this.closed = true;
     this.active = false;
diff --git a/packages/server/src/server/daemon-e2e/omp.real.e2e.test.ts b/packages/server/src/server/daemon-e2e/omp.real.e2e.test.ts
index 7149b16864..ab407e31bc 100644
--- a/packages/server/src/server/daemon-e2e/omp.real.e2e.test.ts
+++ b/packages/server/src/server/daemon-e2e/omp.real.e2e.test.ts
@@ -131,10 +131,10 @@ async function timeline(client: DaemonClient, agentId: string): Promise<AgentTim
   return result.entries.map((entry) => entry.item);
 }
 
-function compactionFiller(): string {
+function compactionFiller(records = 1200): string {
   const teas = ["assam", "darjeeling", "sencha", "oolong"];
   return Array.from(
-    { length: 1200 },
+    { length: records },
     (_, index) =>
       `Record ${String(index).padStart(5, "0")}: tea=${teas[index % teas.length]} origin=region-${index % 37} notes=lorem ipsum dolor sit amet`,
   ).join("\n");
@@ -234,6 +234,27 @@ afterEach(() => {
   roots.clear();
 });
 
+async function waitForTimelineItem(
+  client: DaemonClient,
+  agentId: string,
+  predicate: (item: AgentTimelineItem) => boolean,
+): Promise<AgentTimelineItem> {
+  const deadline = Date.now() + 60_000;
+  let items: AgentTimelineItem[] = [];
+  while (Date.now() < deadline) {
+    items = await timeline(client, agentId);
+    const item = items.find(predicate);
+    if (item) return item;
+    await new Promise((resolve) => setTimeout(resolve, 250));
+  }
+  throw new Error(`Timed out waiting for OMP timeline item: ${JSON.stringify(items)}`);
+}
+
+async function contextWindowUsedTokens(client: DaemonClient, agentId: string) {
+  const result = await client.fetchAgent(agentId);
+  return result?.agent.lastUsage?.contextWindowUsedTokens;
+}
+
 describe("daemon E2E (real OMP)", () => {
   test(
     "a prompt OMP rejects before its agent runs fails the turn with OMP's error",
@@ -258,6 +279,48 @@ describe("daemon E2E (real OMP)", () => {
     TIMEOUT_MS,
   );
 
+  test(
+    "manual compact shows its progress and refreshes context usage",
+    async () => {
+      const harness = await createHarness();
+      try {
+        const agent = await createAgent(harness, "manual-compact");
+        await promptAndFinish(harness, agent.id, "Reply exactly: ready");
+        await promptAndFinish(
+          harness,
+          agent.id,
+          `${compactionFiller(2500)}\n\nWhich tea is in record 00007? Reply with one word.`,
+        );
+        await promptAndFinish(harness, agent.id, "Reply exactly: after-filler");
+        const usedBefore = await contextWindowUsedTokens(harness.client, agent.id);
+        expect(usedBefore).toBeGreaterThan(20_000);
+
+        await harness.client.sendMessage(agent.id, "/compact");
+        await waitForTimelineItem(
+          harness.client,
+          agent.id,
+          (item) => item.type === "compaction" && item.status === "completed",
+        );
+
+        expect(await timeline(harness.client, agent.id)).toEqual(
+          expect.arrayContaining([
+            expect.objectContaining({ type: "compaction", status: "loading", trigger: "manual" }),
+            expect.objectContaining({ type: "compaction", status: "completed", trigger: "manual" }),
+          ]),
+        );
+        await harness.client.waitForAgentUpsert(
+          agent.id,
+          (snapshot) =>
+            (snapshot.lastUsage?.contextWindowUsedTokens ?? Infinity) < (usedBefore ?? 0),
+          60_000,
+        );
+      } finally {
+        await closeHarness(harness);
+      }
+    },
+    TIMEOUT_MS,
+  );
+
   test(
     "prompt, native tool, and resumed follow-up",
     async () => {