diff --git a/packages/paperclip-runner/devtools/browser/src/App.tsx b/packages/paperclip-runner/devtools/browser/src/App.tsx
index e15236e6645..c7d395043f4 100644
--- a/packages/paperclip-runner/devtools/browser/src/App.tsx
+++ b/packages/paperclip-runner/devtools/browser/src/App.tsx
@@ -7,7 +7,11 @@ import type {
   Phase2RunTrace,
   Phase2Scenario,
 } from "../../../src/contracts/phase2";
-import type { Phase3RunTrace } from "../../../src/contracts/phase3";
+import {
+  PHASE3_FAULTS,
+  type Phase3Fault,
+  type Phase3RunTrace,
+} from "../../../src/contracts/phase3";
 import {
   applyPhase2LiveEvent,
   createPhase2LiveSnapshot,
@@ -49,15 +53,53 @@ const liveScenarios: Array<{ key: Phase2Scenario; label: string }> = [
   { key: "duplicate-terminal", label: "Duplicate terminal guard" },
 ];
 
+type BrowserMode = "recovery" | "live" | "replay";
+type LiveStatus = "idle" | "starting" | "running" | "terminal" | "error";
+
+const phase3FaultLabels: Record<Phase3Fault, string> = {
+  none: "Normal connection",
+  "socket-drop": "Socket drop",
+  "lost-ack": "Lost ACK",
+  "duplicate-command": "Duplicate command",
+  "runner-restart": "Runner restart",
+  "harness-restart": "Harness restart",
+  "malformed-input": "Malformed input",
+  "lease-expiry": "Lease expiry",
+  "storage-pressure": "Storage pressure",
+  drain: "Drain",
+  revoke: "Revoke",
+};
+
+const modeCopy: Record<
+  BrowserMode,
+  { eyebrow: string; title: string; description: string }
+> = {
+  recovery: {
+    eyebrow: "Paperclip Runner Protocol · Phase 3",
+    title: "Durable recovery diagnostics",
+    description:
+      "Break the outbound transport, recover the same session, and inspect durable state.",
+  },
+  live: {
+    eyebrow: "Paperclip Runner Protocol · Phase 2",
+    title: "Live runner diagnostics",
+    description:
+      "Run the local harness, stream validated events, and compare the live and replayed state.",
+  },
+  replay: {
+    eyebrow: "Paperclip Runner Protocol · Phase 1",
+    title: "Static protocol replay",
+    description:
+      "Validate a protocol fixture, replay its events, and inspect the resulting session state.",
+  },
+};
+
 interface BrowserFixture {
   key: string;
   label: string;
   source: string;
 }
 
-type BrowserMode = "recovery" | "live" | "replay";
-type LiveStatus = "idle" | "starting" | "running" | "terminal" | "error";
-
 type Phase2StreamRecord =
   | { kind: "event"; event: unknown }
   | { kind: "diagnostic"; message: string }
@@ -86,11 +128,22 @@ function terminalTone(snapshot: SessionSnapshot) {
 }
 
 function humanizeProtocolLabel(value: string): string {
-  const words = value.replaceAll("_", " ");
+  const words = value.replaceAll(/[_-]/g, " ");
   return words.length === 0 ? words : `${words[0]?.toUpperCase()}${words.slice(1)}`;
 }
 
+function recoveryOutcomeTone(outcome: Phase3RunTrace["diagnostics"]["recovery"]["outcome"]) {
+  if (outcome === "recovered") {
+    return "success" as const;
+  }
+  if (outcome === "unrecoverable") {
+    return "danger" as const;
+  }
+  return "warning" as const;
+}
+
 function RecoveryDiagnostics() {
+  const [fault, setFault] = useState<Phase3Fault>("lost-ack");
   const [trace, setTrace] = useState<Phase3RunTrace | null>(null);
   const [status, setStatus] = useState<"idle" | "running" | "complete" | "error">("idle");
   const [error, setError] = useState<string | null>(null);
@@ -102,7 +155,7 @@ function RecoveryDiagnostics() {
       const response = await fetch("/api/phase3/recovery", {
         method: "POST",
         headers: { "content-type": "application/json" },
-        body: JSON.stringify({ fault: "lost-ack" }),
+        body: JSON.stringify({ fault }),
       });
       const result = (await response.json()) as Phase3RunTrace & { error?: string };
       if (!response.ok) throw new Error(result.error ?? "The recovery trace failed.");
@@ -124,6 +177,19 @@ function RecoveryDiagnostics() {
           </CardDescription>
         </CardHeader>
         <CardContent className="editor-content">
+          <label htmlFor="recovery-fault">Fault</label>
+          <select
+            id="recovery-fault"
+            value={fault}
+            disabled={status === "running"}
+            onChange={(event) => setFault(event.target.value as Phase3Fault)}
+          >
+            {PHASE3_FAULTS.map((candidate) => (
+              <option key={candidate} value={candidate}>
+                {phase3FaultLabels[candidate]}
+              </option>
+            ))}
+          </select>
           <Button type="button" disabled={status === "running"} onClick={() => void runRecovery()}>
             {status === "running" ? "Running recovery…" : "Run Phase 3 recovery"}
           </Button>
@@ -151,17 +217,118 @@ function RecoveryDiagnostics() {
           ) : (
             <>
               <dl className="recovery-grid" data-testid="phase3-diagnostics">
-                <div><dt>Connection</dt><dd>{trace.diagnostics.connection.state}</dd></div>
-                <div><dt>Lease</dt><dd>{trace.diagnostics.connection.leaseId ?? "closed"}</dd></div>
-                <div><dt>Outbox</dt><dd>{trace.diagnostics.outbox.events}</dd></div>
-                <div><dt>Last ACK</dt><dd>{trace.diagnostics.cursors.runnerAckedSourceSeq}</dd></div>
-                <div><dt>Replayed</dt><dd>{trace.diagnostics.recovery.replayDeliveries}</dd></div>
-                <div><dt>Duplicate commands</dt><dd>{trace.diagnostics.commands.duplicateDeliveries}</dd></div>
-                <div><dt>Storage</dt><dd>{trace.diagnostics.outbox.bytes} bytes</dd></div>
-                <div><dt>Peak storage</dt><dd>{trace.diagnostics.outbox.peakBytes} bytes</dd></div>
-                <div><dt>Drain or revoke</dt><dd>{trace.diagnostics.recovery.outcome}</dd></div>
-                <div><dt>Secrets</dt><dd>{trace.diagnostics.security.secretLeakCount} leaks</dd></div>
+                <div>
+                  <dt>Connection</dt>
+                  <dd data-testid="phase3-connection-state">
+                    {humanizeProtocolLabel(trace.diagnostics.connection.state)}
+                  </dd>
+                </div>
+                <div>
+                  <dt>Connections</dt>
+                  <dd data-testid="phase3-connections">
+                    {trace.diagnostics.connection.connectionCount}
+                  </dd>
+                </div>
+                <div>
+                  <dt>Reconnects</dt>
+                  <dd data-testid="phase3-reconnects">
+                    {trace.diagnostics.connection.reconnectCount}
+                  </dd>
+                </div>
+                <div>
+                  <dt>Lease</dt>
+                  <dd>{trace.diagnostics.connection.leaseId ?? "closed"}</dd>
+                </div>
+                <div>
+                  <dt>Outbox</dt>
+                  <dd>{trace.diagnostics.outbox.events}</dd>
+                </div>
+                <div>
+                  <dt>Last ACK</dt>
+                  <dd>{trace.diagnostics.cursors.runnerAckedSourceSeq}</dd>
+                </div>
+                <div>
+                  <dt>At-least-once redeliveries</dt>
+                  <dd>{trace.diagnostics.recovery.replayDeliveries}</dd>
+                </div>
+                <div>
+                  <dt>Runner restarts</dt>
+                  <dd data-testid="phase3-runner-restarts">
+                    {trace.diagnostics.recovery.runnerRestarts}
+                  </dd>
+                </div>
+                <div>
+                  <dt>Harness restarts</dt>
+                  <dd>{trace.diagnostics.recovery.harnessRestarts}</dd>
+                </div>
+                <div>
+                  <dt>Fresh bootstraps</dt>
+                  <dd data-testid="phase3-fresh-bootstraps">
+                    {trace.diagnostics.recovery.freshBootstraps}
+                  </dd>
+                </div>
+                <div>
+                  <dt>Duplicate commands</dt>
+                  <dd>{trace.diagnostics.commands.duplicateDeliveries}</dd>
+                </div>
+                <div>
+                  <dt>Storage</dt>
+                  <dd className="storage-diagnostic" data-testid="phase3-storage">
+                    <span>
+                      {trace.diagnostics.outbox.bytes} bytes of {trace.diagnostics.outbox.maxBytes}{" "}
+                      max
+                    </span>
+                    {trace.diagnostics.outbox.backpressure ? (
+                      <Badge tone="warning">Backpressure</Badge>
+                    ) : null}
+                  </dd>
+                </div>
+                <div>
+                  <dt>Peak storage</dt>
+                  <dd>{trace.diagnostics.outbox.peakBytes} bytes</dd>
+                </div>
+                <div>
+                  <dt>Outcome</dt>
+                  <dd className="outcome-diagnostic">
+                    <Badge
+                      tone={recoveryOutcomeTone(trace.diagnostics.recovery.outcome)}
+                      data-testid="phase3-outcome"
+                    >
+                      {humanizeProtocolLabel(trace.diagnostics.recovery.outcome)}
+                    </Badge>
+                    {trace.diagnostics.recovery.outcome !== "recovered" ? (
+                      <span>{humanizeProtocolLabel(trace.diagnostics.recovery.reason)}</span>
+                    ) : null}
+                  </dd>
+                </div>
+                <div>
+                  <dt>Secrets</dt>
+                  <dd>{trace.diagnostics.security.secretLeakCount} leaks</dd>
+                </div>
               </dl>
+              <p className="diagnostic-note">
+                At-least-once redeliveries include normal in-flight outbox resends. Use reconnects
+                and the per-event history to identify injected recovery.
+              </p>
+              <div className="timeline-heading">
+                <h3>Recovery history</h3>
+                <span>{trace.diagnostics.committedEvents.length} committed events</span>
+              </div>
+              <ol className="timeline" data-testid="recovery-history">
+                {trace.diagnostics.committedEvents.map((event) => (
+                  <li key={event.sourceEventId}>
+                    <span className="sequence" aria-hidden="true">
+                      {event.sourceSeq}
+                    </span>
+                    <div className="timeline-title">
+                      <code>{event.eventType}</code>
+                      {event.deliveryCount > 1 ? (
+                        <span className="delivery-marker">delivered {event.deliveryCount}×</span>
+                      ) : null}
+                    </div>
+                  </li>
+                ))}
+              </ol>
               <div className="parity-line">
                 <span>Same runner and session</span>
                 <Badge tone={trace.assertions.stableIdentity ? "success" : "danger"}>{trace.assertions.stableIdentity ? "Preserved" : "Changed"}</Badge>
@@ -655,16 +822,15 @@ function StaticReplay() {
 
 export function App() {
   const [mode, setMode] = useState<BrowserMode>("live");
+  const header = modeCopy[mode];
 
   return (
     <main className="app-shell">
       <header className="page-header">
         <div>
-          <p className="eyebrow">Paperclip Runner Protocol · Phase 3</p>
-          <h1>Durable recovery diagnostics</h1>
-          <p>
-            Break the outbound transport, recover the same session, and inspect durable state.
-          </p>
+          <p className="eyebrow">{header.eyebrow}</p>
+          <h1>{header.title}</h1>
+          <p>{header.description}</p>
         </div>
         <Badge tone="neutral">Standalone · no Paperclip core</Badge>
       </header>
diff --git a/packages/paperclip-runner/devtools/browser/src/styles.css b/packages/paperclip-runner/devtools/browser/src/styles.css
index 74d0e06f602..34a8580dc16 100644
--- a/packages/paperclip-runner/devtools/browser/src/styles.css
+++ b/packages/paperclip-runner/devtools/browser/src/styles.css
@@ -356,10 +356,34 @@ select {
   font-size: var(--font-size-sm);
 }
 
-.snapshot-grid div {
+.snapshot-grid div,
+.recovery-grid > div {
   min-width: 0;
 }
 
+.storage-diagnostic {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: var(--space-2);
+  overflow: visible;
+  white-space: normal;
+}
+
+.outcome-diagnostic {
+  display: grid;
+  gap: var(--space-1);
+  overflow: visible;
+  white-space: normal;
+}
+
+.outcome-diagnostic > span:not(.ui-badge),
+.delivery-marker {
+  color: var(--muted-foreground);
+  font-family: var(--font-sans);
+  font-size: var(--font-size-xs);
+}
+
 dd {
   margin: var(--space-1) 0 0;
   overflow: hidden;
diff --git a/packages/paperclip-runner/devtools/browser/static-replay.spec.ts b/packages/paperclip-runner/devtools/browser/static-replay.spec.ts
index 24bd47ee4c3..ed64d82c6d3 100644
--- a/packages/paperclip-runner/devtools/browser/static-replay.spec.ts
+++ b/packages/paperclip-runner/devtools/browser/static-replay.spec.ts
@@ -2,8 +2,9 @@ import { expect, test } from "@playwright/test";
 
 test("validates and renders the shared Phase 1 fixture", async ({ page }, testInfo) => {
   await page.goto("/");
+  await expect(page.getByRole("heading", { name: "Live runner diagnostics" })).toBeVisible();
   await page.getByRole("button", { name: "Static replay" }).click();
-  await expect(page.getByRole("heading", { name: "Durable recovery diagnostics" })).toBeVisible();
+  await expect(page.getByRole("heading", { name: "Static protocol replay" })).toBeVisible();
   await expect(page.getByTestId("terminal-badge")).toHaveText("Succeeded");
   await expect(page.getByTestId("timeline").getByRole("listitem")).toHaveCount(9);
   await expect(page.getByTestId("timeline")).not.toContainText("workspace_preparing");
@@ -19,10 +20,41 @@ test("validates and renders the shared Phase 1 fixture", async ({ page }, testIn
 test("shows Phase 3 recovery diagnostics without secrets", async ({ page }, testInfo) => {
   await page.goto("/");
   await page.getByRole("button", { name: "Recovery", exact: true }).click();
+  await expect(page.getByRole("heading", { name: "Durable recovery diagnostics" })).toBeVisible();
+  const fault = page.getByLabel("Fault", { exact: true });
+  await expect(fault).toHaveValue("lost-ack");
+  expect(await fault.locator("option").allTextContents()).toEqual([
+    "Normal connection",
+    "Socket drop",
+    "Lost ACK",
+    "Duplicate command",
+    "Runner restart",
+    "Harness restart",
+    "Malformed input",
+    "Lease expiry",
+    "Storage pressure",
+    "Drain",
+    "Revoke",
+  ]);
+  await fault.selectOption("none");
   await page.getByRole("button", { name: "Run Phase 3 recovery" }).click();
+  await expect(fault).toBeDisabled();
   await expect(page.getByText("complete", { exact: true })).toBeVisible();
-  await expect(page.getByTestId("phase3-diagnostics")).toContainText("Replayed");
+  await expect(fault).toBeEnabled();
+  await expect(page.getByTestId("phase3-connection-state")).toHaveText("Stopped");
+  await expect(page.getByTestId("phase3-connections")).toHaveText("1");
+  await expect(page.getByTestId("phase3-reconnects")).toHaveText("0");
+  await expect(page.getByTestId("phase3-runner-restarts")).toHaveText("0");
+  await expect(page.getByTestId("phase3-fresh-bootstraps")).toHaveText("1");
+  await expect(page.getByTestId("phase3-diagnostics")).toContainText("At-least-once redeliveries");
   await expect(page.getByTestId("phase3-diagnostics")).toContainText("Duplicate commands");
+  await expect(page.getByTestId("phase3-storage")).toContainText("0 bytes of 65536 max");
+  await expect(page.getByTestId("phase3-outcome")).toHaveText("Recovered");
+  await expect(page.getByTestId("phase3-outcome")).toHaveAttribute("data-tone", "success");
+  await expect(page.getByTestId("recovery-history").getByRole("listitem")).toHaveCount(9);
+  const firstRecoveryEvent = page.getByTestId("recovery-history").getByRole("listitem").first();
+  await expect(firstRecoveryEvent).toContainText("workspace.ready");
+  await expect(firstRecoveryEvent.getByText("delivered 2×")).toBeVisible();
   await expect(page.getByText("Preserved", { exact: true })).toBeVisible();
   await expect(page.getByText("Yes", { exact: true })).toBeVisible();
   await expect(page.locator("body")).not.toContainText("leaseToken");
@@ -30,6 +62,45 @@ test("shows Phase 3 recovery diagnostics without secrets", async ({ page }, test
   await page.screenshot({ path: testInfo.outputPath("phase-03-recovery-diagnostics.png"), fullPage: true });
 });
 
+test("tones failure outcomes and storage backpressure", async ({ page }) => {
+  await page.goto("/");
+  await page.getByRole("button", { name: "Recovery", exact: true }).click();
+  const fault = page.getByLabel("Fault", { exact: true });
+  const run = page.getByRole("button", { name: "Run Phase 3 recovery" });
+
+  await fault.selectOption("revoke");
+  await run.click();
+  await expect(page.getByTestId("phase3-outcome")).toHaveText("Revoked");
+  await expect(page.getByTestId("phase3-outcome")).toHaveAttribute("data-tone", "warning");
+  await expect(page.getByText("Revoke completed", { exact: true })).toBeVisible();
+
+  await fault.selectOption("storage-pressure");
+  await run.click();
+  await expect(page.getByTestId("phase3-storage")).toContainText("0 bytes of 16384 max");
+  await expect(page.getByTestId("phase3-storage").getByText("Backpressure")).toHaveAttribute(
+    "data-tone",
+    "warning",
+  );
+});
+
+test("keeps recovery diagnostics within the narrow viewport", async ({ page }, testInfo) => {
+  await page.setViewportSize({ width: 390, height: 844 });
+  await page.goto("/");
+  await page.getByRole("button", { name: "Recovery", exact: true }).click();
+  await page.getByLabel("Fault", { exact: true }).selectOption("none");
+  await page.getByRole("button", { name: "Run Phase 3 recovery" }).click();
+  await expect(page.getByTestId("recovery-history")).toBeVisible();
+  expect(
+    await page.evaluate(
+      () => document.documentElement.scrollWidth <= document.documentElement.clientWidth,
+    ),
+  ).toBe(true);
+  await page.screenshot({
+    path: testInfo.outputPath("phase-03-recovery-diagnostics-mobile.png"),
+    fullPage: true,
+  });
+});
+
 test("shows duplicate and unsupported-version replay states", async ({ page }) => {
   await page.goto("/");
   await page.getByRole("button", { name: "Static replay" }).click();
diff --git a/packages/paperclip-runner/docs/tutorials/phase-03-break-recovery.md b/packages/paperclip-runner/docs/tutorials/phase-03-break-recovery.md
index 6e062e33561..0f9914ae566 100644
--- a/packages/paperclip-runner/docs/tutorials/phase-03-break-recovery.md
+++ b/packages/paperclip-runner/docs/tutorials/phase-03-break-recovery.md
@@ -160,13 +160,34 @@ Run:
 pnpm --filter @paperclipai/paperclip-runner browser:dev --host 127.0.0.1 --port 4179
 ```
 
-Open `http://127.0.0.1:4179/`. Select **Recovery**. Select
-**Run Phase 3 recovery**.
+Open `http://127.0.0.1:4179/` and select **Recovery**. Use the **Fault** selector
+to run these cases with **Run Phase 3 recovery**:
+
+1. **Normal connection**
+2. **Socket drop**
+3. **Lost ACK**
+4. **Runner restart**
+5. **Revoke**
+
+Also run **Storage pressure** when checking the bounded-storage state.
 
 Confirm:
 
-- recovery status becomes **complete**;
-- connection, lease, outbox, ACK, replay, storage, and outcome fields appear;
+- recovery status becomes **complete** after every run;
+- **Outcome** is **Recovered** for the normal, socket-drop, lost-ACK, and
+  runner-restart cases, while revoke shows the warning-toned **Revoked** outcome
+  and its reason;
+- **Connections**, **Reconnects**, **Runner restarts**, and **Fresh bootstraps**
+  distinguish the normal, reconnect, process-restart, and lease-bootstrap paths;
+- **Recovery history** lists every committed source sequence and event type, with
+  a `delivered N×` marker on events delivered more than once;
+- **At-least-once redeliveries** can be non-zero for a normal connection because
+  the runner may resend a still-unacknowledged in-flight outbox batch. Use the
+  reconnect counters and per-event delivery markers to identify injected
+  recovery; a lost ACK adds an extra delivery to the affected event;
+- **Storage** reports current bytes and the maximum, and storage pressure shows a
+  warning-toned **Backpressure** badge;
+- the connection lifecycle is human-readable, such as **Stopped**;
 - **Same runner and session** says **Preserved**;
 - **Secrets redacted** says **Yes**;
 - no bootstrap ticket or connection lease token appears.