diff --git a/packages/paperclip-runner/devtools/issue-thread/index.html b/packages/paperclip-runner/devtools/issue-thread/index.html
index d59893e1f19..8c344f1635e 100644
--- a/packages/paperclip-runner/devtools/issue-thread/index.html
+++ b/packages/paperclip-runner/devtools/issue-thread/index.html
@@ -4,7 +4,7 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover" />
     <meta name="color-scheme" content="dark" />
-    <title>Mock Paperclip · Issue thread</title>
+    <title>🫧 Mock Paperclip · Issue thread</title>
   </head>
   <body>
     <div id="root"></div>
diff --git a/packages/paperclip-runner/devtools/issue-thread/issue-thread.spec.ts b/packages/paperclip-runner/devtools/issue-thread/issue-thread.spec.ts
index 7d14f078b6b..a21a4bfa3cf 100644
--- a/packages/paperclip-runner/devtools/issue-thread/issue-thread.spec.ts
+++ b/packages/paperclip-runner/devtools/issue-thread/issue-thread.spec.ts
@@ -125,10 +125,10 @@ test.describe("Phase 7G issue thread", () => {
 
   test("tool strips are collapsed disclosures that deep-link into Evidence", async ({ page }) => {
     await open(page, "thread-baseline");
-    const strip = page.locator('[data-tool-strip="get_task_context"] button').first();
-    await expect(strip).toHaveAttribute("aria-expanded", "false");
-    await strip.click();
-    await expect(strip).toHaveAttribute("aria-expanded", "true");
+    const strip = page.locator('[data-tool-strip="get_task_context"]').first();
+    await expect(strip).not.toHaveAttribute("open", "");
+    await strip.locator("summary").click();
+    await expect(strip).toHaveAttribute("open", "");
 
     await page.getByRole("button", { name: "View in Evidence" }).first().click();
     const panel = page.getByTestId("evidence-panel");
@@ -629,6 +629,7 @@ test.describe("Phase 7M clean-room chat", () => {
   test("a new chat opens a blank live thread with no scenario controls", async ({ page }) => {
     await openCleanRoom(page);
 
+    await expect(page).toHaveTitle("🫧 Mock Paperclip · Issue thread");
     await expect(page.locator('[data-surface="chat"]')).toBeVisible();
     await expect(page.getByTestId("clean-room-empty")).toBeVisible();
     await expect(page.locator("[data-turn-id]")).toHaveCount(0);
@@ -655,6 +656,56 @@ test.describe("Phase 7M clean-room chat", () => {
     await expect(page.getByText("Real Paperclip API requests: 0")).toBeVisible();
   });
 
+  test("Runner events expand completely while stream deltas stay grouped", async ({ page }) => {
+    await page.addInitScript(() => window.localStorage.clear());
+    await page.route(CLEAN_ROOM_API, async (route) => {
+      const payload = cleanRoomPayload("MCK-1000");
+      const view = payload.view as Phase7IssueThreadSnapshot;
+      view.evidence.runner = [
+        {
+          id: "session-1",
+          turnId: "turn-0",
+          kind: "session",
+          ordinal: 1,
+          detail: "session · started",
+          details: [
+            { label: "Action", value: "started" },
+            { label: "Runner", value: "paperclip-runnerd" },
+          ],
+        },
+        ...[2, 3].map((ordinal) => ({
+          id: `delta-${ordinal}`,
+          turnId: "turn-1",
+          kind: "provider_event",
+          ordinal,
+          detail: "provider event · assistant_delta",
+          details: [{ label: "Event", value: "assistant_delta" }],
+        })),
+      ];
+      await route.fulfill({
+        status: 200,
+        contentType: "application/json",
+        body: JSON.stringify(payload),
+      });
+    });
+    await page.goto("/#/chat");
+    await expect(page.locator('[data-thread-state="settled"]')).toBeVisible();
+
+    await page.getByTestId("evidence-toggle").click();
+    await page.getByRole("button", { name: /Runner & events/ }).click();
+
+    const session = page.locator('[data-record-id="session-1"]');
+    await session.locator("summary").click();
+    await expect(session).toContainText("paperclip-runnerd");
+
+    const group = page.locator('[data-runner-delta-group="assistant_delta"]');
+    await expect(group).toContainText("2 streamed updates");
+    await group.locator(":scope > summary").click();
+    await expect(group.locator(".pit-runner-event")).toHaveCount(2);
+    await group.locator(".pit-runner-event").first().locator("summary").click();
+    await expect(group.locator(".pit-runner-event").first()).toContainText("assistant_delta");
+  });
+
   test("a sent message renders the live turn it produced", async ({ page }) => {
     await openCleanRoom(page);
     await page.route("**/api/phase7/ui/message", async (route) => {
@@ -962,6 +1013,27 @@ async function openStreamingCleanRoom(page: Page): Promise<void> {
 }
 
 test.describe("Phase 7Q streamed live turn", () => {
+  test("shows sanitized thinking progress before assistant text arrives", async ({ page }) => {
+    await openStreamingCleanRoom(page);
+
+    await page.locator("#composer-input").fill("Show progress while you inspect this issue.");
+    await page.getByTestId("composer-send").click();
+
+    const progress = page.locator('[data-thread-item="progress_activity"][data-activity="thinking"]');
+    await expect(progress).toBeVisible({ timeout: 30_000 });
+    await expect(progress).toHaveAttribute("data-status", "running");
+    await expect(progress).toContainText("Thinking");
+    await expect(page.locator('[data-thread-item="agent_message"]')).toHaveCount(0);
+    await expect(page.locator("body")).not.toContainText(
+      "PRIVATE reasoning text must never reach the browser.",
+    );
+
+    await expect(page.locator('[data-thread-item="agent_message"]')).toContainText(STREAM_REPLY, {
+      timeout: 60_000,
+    });
+    await expect(progress).toHaveAttribute("data-status", "complete");
+  });
+
   test("one assistant card grows while the turn POST is still open", async ({ page }) => {
     await openStreamingCleanRoom(page);
 
diff --git a/packages/paperclip-runner/devtools/issue-thread/src/App.tsx b/packages/paperclip-runner/devtools/issue-thread/src/App.tsx
index 287a875362d..8cd7d8bb717 100644
--- a/packages/paperclip-runner/devtools/issue-thread/src/App.tsx
+++ b/packages/paperclip-runner/devtools/issue-thread/src/App.tsx
@@ -244,6 +244,8 @@ export function App() {
     // faces before measuring: a host fallback can otherwise move the retained
     // scroll position by a pixel even after the final webfonts replace it.
     if (route.panel === null || snapshot === null) return;
+    const panel = route.panel;
+    const record = route.record;
     let cancelled = false;
     void (async () => {
       if (typeof document.fonts?.ready?.then === "function") {
@@ -251,11 +253,11 @@ export function App() {
       }
       if (cancelled) return;
       const target =
-        route.record === null
-          ? document.querySelector(`[data-evidence-section="${CSS.escape(route.panel)}"]`)
-          : document.querySelector(`[data-record-id="${CSS.escape(route.record)}"]`);
+        record === null
+          ? document.querySelector(`[data-evidence-section="${CSS.escape(panel)}"]`)
+          : document.querySelector(`[data-record-id="${CSS.escape(record)}"]`);
       if (target !== null) {
-        scrollEvidenceIntoView(target, route.record === null ? "start" : "center");
+        scrollEvidenceIntoView(target, record === null ? "start" : "center");
       }
     })();
     return () => {
diff --git a/packages/paperclip-runner/devtools/issue-thread/src/EvidencePanel.test.ts b/packages/paperclip-runner/devtools/issue-thread/src/EvidencePanel.test.ts
new file mode 100644
index 00000000000..59f5055ac35
--- /dev/null
+++ b/packages/paperclip-runner/devtools/issue-thread/src/EvidencePanel.test.ts
@@ -0,0 +1,56 @@
+import { describe, expect, it } from "vitest";
+
+import type { Phase7EvidenceRunnerRecord } from "../../../src/issue-thread/types.js";
+import { groupPhase7RunnerEvents } from "./EvidencePanel.js";
+
+function record(
+  ordinal: number,
+  event: string,
+  turnId = "turn-1",
+): Phase7EvidenceRunnerRecord {
+  return {
+    id: `event-${ordinal}`,
+    turnId,
+    kind: "provider_event",
+    ordinal,
+    detail: `provider event · ${event}`,
+    details: [{ label: "Event", value: event }],
+  };
+}
+
+describe("Runner event grouping", () => {
+  it("aggregates each delta category per turn at its first position", () => {
+    const session: Phase7EvidenceRunnerRecord = {
+      id: "event-1",
+      turnId: "turn-0",
+      kind: "session",
+      ordinal: 1,
+      detail: "session · started",
+      details: [{ label: "Action", value: "started" }],
+    };
+    const groups = groupPhase7RunnerEvents([
+      session,
+      record(2, "assistant_delta"),
+      record(3, "reasoning_delta"),
+      record(4, "assistant_delta"),
+      record(5, "assistant_delta", "turn-2"),
+    ]);
+
+    expect(groups.map((group) => [group.event, group.records.map((entry) => entry.ordinal)])).toEqual([
+      [null, [1]],
+      ["assistant_delta", [2, 4]],
+      ["reasoning_delta", [3]],
+      ["assistant_delta", [5]],
+    ]);
+  });
+
+  it("leaves non-delta events individually expandable", () => {
+    const groups = groupPhase7RunnerEvents([
+      record(1, "turn_started"),
+      record(2, "tool_result"),
+    ]);
+
+    expect(groups).toHaveLength(2);
+    expect(groups.every((group) => group.event === null && group.records.length === 1)).toBe(true);
+  });
+});
diff --git a/packages/paperclip-runner/devtools/issue-thread/src/EvidencePanel.tsx b/packages/paperclip-runner/devtools/issue-thread/src/EvidencePanel.tsx
index 9198e4b1e1d..fe7efd37d68 100644
--- a/packages/paperclip-runner/devtools/issue-thread/src/EvidencePanel.tsx
+++ b/packages/paperclip-runner/devtools/issue-thread/src/EvidencePanel.tsx
@@ -2,6 +2,7 @@ import { useEffect, useRef, type ReactNode } from "react";
 
 import type {
   Phase7EvidenceModel,
+  Phase7EvidenceRunnerRecord,
   Phase7EvidenceSectionId,
   Phase7IssueThreadSnapshot,
   Phase7ToolDisposition,
@@ -23,6 +24,86 @@ const DISPOSITION_ORDER: Phase7ToolDisposition[] = [
   "control_plane_owned",
 ];
 
+export interface Phase7RunnerEventGroup {
+  id: string;
+  event: string | null;
+  records: Phase7EvidenceRunnerRecord[];
+}
+
+/**
+ * Stream deltas are useful evidence but terrible default reading material.
+ * Aggregate each sanitized delta category within a turn at its first position;
+ * expanding the group still exposes every individual event in ordinal order.
+ */
+export function groupPhase7RunnerEvents(
+  records: readonly Phase7EvidenceRunnerRecord[],
+): Phase7RunnerEventGroup[] {
+  const groups: Phase7RunnerEventGroup[] = [];
+  const deltaGroups = new Map<string, Phase7RunnerEventGroup>();
+  for (const record of records) {
+    const event = record.details.find((entry) => entry.label === "Event")?.value ?? null;
+    if (event === null || !event.endsWith("_delta")) {
+      groups.push({ id: record.id, event: null, records: [record] });
+      continue;
+    }
+    const key = `${record.turnId}:${event}`;
+    const existing = deltaGroups.get(key);
+    if (existing !== undefined) {
+      existing.records.push(record);
+      continue;
+    }
+    const group = { id: `delta:${key}`, event, records: [record] };
+    deltaGroups.set(key, group);
+    groups.push(group);
+  }
+  return groups;
+}
+
+function RunnerEvent({ record }: { record: Phase7EvidenceRunnerRecord }) {
+  return (
+    <details className="pit-runner-event" data-record-id={record.id}>
+      <summary className="pit-runner-event-summary">
+        <span className="pit-record-title">#{record.ordinal} {record.kind}</span>
+        <span className="pit-record-detail">{record.detail}</span>
+        <span className="pit-activity-caret" aria-hidden="true">›</span>
+      </summary>
+      <dl className="pit-runner-event-details">
+        {record.details.length === 0 ? (
+          <>
+            <dt>Detail</dt>
+            <dd>No additional sanitized fields were retained.</dd>
+          </>
+        ) : (
+          record.details.map((entry, index) => (
+            <div key={`${entry.label}:${index}`}>
+              <dt>{entry.label}</dt>
+              <dd>{entry.value}</dd>
+            </div>
+          ))
+        )}
+      </dl>
+    </details>
+  );
+}
+
+function RunnerEventGroup({ group }: { group: Phase7RunnerEventGroup }) {
+  if (group.event === null) return <RunnerEvent record={group.records[0]!} />;
+  return (
+    <details className="pit-runner-group" data-runner-delta-group={group.event}>
+      <summary className="pit-runner-group-summary">
+        <span className="pit-activity-caret" aria-hidden="true">›</span>
+        <span className="pit-record-title">{group.event}</span>
+        <span className="pit-record-detail">
+          {group.records.length} streamed update{group.records.length === 1 ? "" : "s"}
+        </span>
+      </summary>
+      <div className="pit-runner-group-events">
+        {group.records.map((record) => <RunnerEvent key={record.id} record={record} />)}
+      </div>
+    </details>
+  );
+}
+
 export interface EvidencePanelProps {
   snapshot: Phase7IssueThreadSnapshot;
   layout: "side" | "overlay" | "segment";
@@ -317,13 +398,8 @@ export function EvidencePanel(props: EvidencePanelProps) {
         open={isOpen("runner")}
         onToggle={() => onToggleSection("runner")}
       >
-        {filterByTurn(evidence.runner, selectedTurnId).map((record) => (
-          <div className="pit-record" key={record.id} data-record-id={record.id}>
-            <span className="pit-record-title">
-              #{record.ordinal} {record.kind}
-            </span>
-            <span className="pit-record-detail">{record.detail}</span>
-          </div>
+        {groupPhase7RunnerEvents(filterByTurn(evidence.runner, selectedTurnId)).map((group) => (
+          <RunnerEventGroup key={group.id} group={group} />
         ))}
       </Section>
 
diff --git a/packages/paperclip-runner/devtools/issue-thread/src/ThreadItems.tsx b/packages/paperclip-runner/devtools/issue-thread/src/ThreadItems.tsx
index 34011feefc1..d1563a42bdc 100644
--- a/packages/paperclip-runner/devtools/issue-thread/src/ThreadItems.tsx
+++ b/packages/paperclip-runner/devtools/issue-thread/src/ThreadItems.tsx
@@ -26,47 +26,72 @@ function ToolStrip({
   item: Extract<Phase7ThreadItem, { kind: "tool_activity" }>;
   callbacks: ThreadCallbacks;
 }) {
-  const [expanded, setExpanded] = useState(false);
   return (
-    <div
+    <details
       id={item.id}
-      className="pit-strip"
+      className="pit-activity-item"
       data-thread-item="tool_activity"
       data-status={item.status}
       data-tool-strip={item.operationId}
     >
-      <button
-        type="button"
-        className="pit-strip-button"
-        aria-expanded={expanded}
-        onClick={() => setExpanded((current) => !current)}
-      >
-        <span className="pit-strip-glyph" aria-hidden="true">
+      <summary className="pit-activity-summary">
+        <span className="pit-activity-glyph" aria-hidden="true">
           {STATUS_GLYPH[item.status]}
         </span>
         <span className="pit-visually-hidden">{item.status}</span>
-        <span className="pit-strip-operation">{item.operationId}</span>
-        <span className="pit-strip-summary">{item.summary}</span>
-        <span className="pit-strip-caret" aria-hidden="true">
-          {expanded ? "⌄" : "›"}
-        </span>
-      </button>
-      {expanded ? (
-        <div className="pit-strip-detail">
+        <span className="pit-activity-operation">{item.operationId}</span>
+        <span className="pit-activity-description">{item.summary}</span>
+        <span className="pit-activity-caret" aria-hidden="true">›</span>
+      </summary>
+      <div className="pit-activity-detail">
+        <p className="pit-card-meta">Sanitized tool input and result</p>
+        <div className="pit-activity-payloads">
           <pre className="pit-code">{JSON.stringify(item.input, null, 2)}</pre>
           <pre className="pit-code">{JSON.stringify(item.result, null, 2)}</pre>
-          <button
-            type="button"
-            className="pit-link-button"
-            onClick={() =>
-              callbacks.onOpenEvidence(item.evidenceRef.section, item.evidenceRef.recordId)
-            }
-          >
-            View in Evidence
-          </button>
         </div>
-      ) : null}
-    </div>
+        <button
+          type="button"
+          className="pit-link-button"
+          onClick={() =>
+            callbacks.onOpenEvidence(item.evidenceRef.section, item.evidenceRef.recordId)
+          }
+        >
+          View in Evidence
+        </button>
+      </div>
+    </details>
+  );
+}
+
+function ProgressItem({
+  item,
+}: {
+  item: Extract<Phase7ThreadItem, { kind: "progress_activity" }>;
+}) {
+  return (
+    <details
+      id={item.id}
+      className="pit-activity-item pit-progress-activity"
+      data-thread-item="progress_activity"
+      data-activity={item.activity}
+      data-status={item.status}
+      open={item.status === "running"}
+    >
+      <summary className="pit-activity-summary">
+        <span className="pit-activity-glyph" aria-hidden="true">
+          {item.status === "running" ? "⏳" : "✓"}
+        </span>
+        <span className="pit-activity-operation">{item.label}</span>
+        <span className="pit-activity-description">{item.summary}</span>
+        <span className="pit-activity-caret" aria-hidden="true">›</span>
+      </summary>
+      <div className="pit-activity-detail">
+        <p>
+          {item.eventCount} sanitized progress update{item.eventCount === 1 ? "" : "s"} observed.
+          Raw chain-of-thought and provider text are not exposed.
+        </p>
+      </div>
+    </details>
   );
 }
 
@@ -80,7 +105,12 @@ function ThreadItemView({
   switch (item.kind) {
     case "user_message":
       return (
-        <article id={item.id} className="pit-card" data-thread-item="user_message">
+        <article
+          id={item.id}
+          className="pit-message"
+          data-role="user"
+          data-thread-item="user_message"
+        >
           <div className="pit-card-head">
             <span className="pit-card-author">{item.author}</span>
             <Timestamp value={item.at} />
@@ -93,7 +123,8 @@ function ThreadItemView({
       return (
         <article
           id={item.id}
-          className="pit-card"
+          className="pit-message"
+          data-role="assistant"
           data-thread-item="agent_message"
           data-streaming={item.streaming}
         >
@@ -141,6 +172,9 @@ function ThreadItemView({
     case "tool_activity":
       return <ToolStrip item={item} callbacks={callbacks} />;
 
+    case "progress_activity":
+      return <ProgressItem item={item} />;
+
     case "denial":
       return (
         <div id={item.id} className="pit-strip pit-denial" data-status="denied" data-thread-item="denial">
@@ -311,7 +345,7 @@ export function TurnGroup({
   return (
     <section className="pit-turn" data-turn-id={turn.id} aria-label={`Turn ${turn.ordinal}`}>
       <h2 className="pit-turn-header">
-        <span>
+        <span className="pit-turn-label">
           Turn {turn.ordinal} · {turn.mode} · {turn.toolCallCount} tool call
           {turn.toolCallCount === 1 ? "" : "s"} ·{" "}
           {new Date(turn.at).toISOString().slice(11, 19)}
diff --git a/packages/paperclip-runner/devtools/issue-thread/src/issue-thread.css b/packages/paperclip-runner/devtools/issue-thread/src/issue-thread.css
index 0e61e04906c..bbba3a05ddd 100644
--- a/packages/paperclip-runner/devtools/issue-thread/src/issue-thread.css
+++ b/packages/paperclip-runner/devtools/issue-thread/src/issue-thread.css
@@ -559,6 +559,37 @@ textarea {
   min-width: 0;
 }
 
+/*
+ * Chat messages follow the familiar assistant flow: the board's message is a
+ * compact bubble, while the assistant answer sits directly on the page. The
+ * heavier card remains available for durable control-plane records below.
+ */
+.pit-message {
+  min-width: 0;
+}
+
+.pit-message[data-role="user"] {
+  align-self: flex-end;
+  width: fit-content;
+  max-width: 85%;
+  padding: var(--pit-space-3) var(--pit-space-4);
+  border-radius: var(--pit-radius-lg);
+  background: var(--pit-surface-raised);
+}
+
+.pit-message[data-role="assistant"] {
+  padding: var(--pit-space-2) 0;
+}
+
+.pit-message .pit-card-head {
+  color: var(--pit-muted-foreground);
+}
+
+.pit-app[data-surface="chat"] .pit-turn-label,
+.pit-app[data-surface="chat"] .pit-turn-header::after {
+  display: none;
+}
+
 .pit-card-head {
   display: flex;
   align-items: baseline;
@@ -664,6 +695,100 @@ textarea {
   gap: var(--pit-space-2);
 }
 
+/* Lightweight assistant-style reasoning/tool disclosures. */
+.pit-activity-item {
+  min-width: 0;
+  color: var(--pit-muted-foreground);
+}
+
+.pit-activity-summary {
+  display: flex;
+  align-items: center;
+  gap: var(--pit-space-2);
+  min-height: var(--pit-touch-target);
+  padding: var(--pit-space-1) 0;
+  cursor: pointer;
+  list-style: none;
+}
+
+.pit-activity-summary::-webkit-details-marker {
+  display: none;
+}
+
+.pit-activity-glyph {
+  flex: none;
+  width: var(--pit-space-5);
+  color: var(--pit-muted-foreground);
+  font-family: var(--pit-font-mono);
+  text-align: center;
+}
+
+.pit-activity-item[data-status="ok"] .pit-activity-glyph,
+.pit-activity-item[data-status="complete"] .pit-activity-glyph {
+  color: var(--pit-success);
+}
+
+.pit-activity-item[data-status="denied"] .pit-activity-glyph {
+  color: var(--pit-danger);
+}
+
+.pit-activity-item[data-status="running"] .pit-activity-glyph {
+  color: var(--pit-live);
+  animation: pit-pulse 1.6s ease-in-out infinite;
+}
+
+.pit-activity-operation {
+  flex: none;
+  color: var(--pit-foreground);
+  font-family: var(--pit-font-mono);
+  font-size: var(--pit-text-xs);
+  font-weight: 600;
+}
+
+.pit-progress-activity .pit-activity-operation {
+  font-family: var(--pit-font-sans);
+}
+
+.pit-activity-description {
+  flex: 1;
+  min-width: 0;
+  overflow: hidden;
+  color: var(--pit-muted-foreground);
+  font-size: var(--pit-text-xs);
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.pit-activity-caret {
+  flex: none;
+  color: var(--pit-faint-foreground);
+  transition: transform var(--pit-motion) ease-out;
+}
+
+.pit-activity-item[open] > .pit-activity-summary .pit-activity-caret {
+  transform: rotate(90deg);
+}
+
+.pit-activity-detail {
+  display: flex;
+  flex-direction: column;
+  gap: var(--pit-space-2);
+  margin-left: calc(var(--pit-space-5) + var(--pit-space-2));
+  padding: 0 0 var(--pit-space-3) var(--pit-space-3);
+  border-left: 1px solid var(--pit-border);
+  font-size: var(--pit-text-xs);
+}
+
+.pit-activity-detail p {
+  margin: 0;
+}
+
+.pit-activity-payloads {
+  display: grid;
+  gap: var(--pit-space-2);
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+}
+
 .pit-code {
   margin: 0;
   padding: var(--pit-space-2);
@@ -1058,6 +1183,81 @@ textarea {
   overflow-wrap: anywhere;
 }
 
+.pit-runner-event,
+.pit-runner-group {
+  min-width: 0;
+  border: 1px solid var(--pit-border);
+  border-radius: var(--pit-radius-sm);
+  background: var(--pit-surface);
+  font-size: var(--pit-text-xs);
+}
+
+.pit-runner-event-summary,
+.pit-runner-group-summary {
+  display: flex;
+  align-items: center;
+  gap: var(--pit-space-2);
+  min-height: var(--pit-touch-target);
+  padding: var(--pit-space-2);
+  cursor: pointer;
+  list-style: none;
+  min-width: 0;
+}
+
+.pit-runner-event-summary::-webkit-details-marker,
+.pit-runner-group-summary::-webkit-details-marker {
+  display: none;
+}
+
+.pit-runner-event-summary .pit-record-detail,
+.pit-runner-group-summary .pit-record-detail {
+  flex: 1;
+  min-width: 0;
+}
+
+.pit-runner-event[open] > .pit-runner-event-summary .pit-activity-caret,
+.pit-runner-group[open] > .pit-runner-group-summary .pit-activity-caret {
+  transform: rotate(90deg);
+}
+
+.pit-runner-event-details {
+  display: grid;
+  gap: var(--pit-space-2);
+  margin: 0;
+  padding: 0 var(--pit-space-2) var(--pit-space-2);
+}
+
+.pit-runner-event-details > div {
+  display: grid;
+  grid-template-columns: minmax(0, 7rem) minmax(0, 1fr);
+  gap: var(--pit-space-2);
+}
+
+.pit-runner-event-details dt,
+.pit-runner-event-details dd {
+  margin: 0;
+  overflow-wrap: anywhere;
+}
+
+.pit-runner-event-details dt {
+  color: var(--pit-faint-foreground);
+}
+
+.pit-runner-event-details dd {
+  color: var(--pit-muted-foreground);
+  font-family: var(--pit-font-mono);
+}
+
+.pit-runner-group-events {
+  display: grid;
+  gap: var(--pit-space-2);
+  padding: 0 var(--pit-space-2) var(--pit-space-2);
+}
+
+.pit-runner-group-events .pit-runner-event {
+  background: var(--pit-surface-sunken);
+}
+
 .pit-tool-group-label {
   font-size: var(--pit-text-xs);
   font-weight: 600;
@@ -1300,6 +1500,18 @@ textarea {
     padding: var(--pit-space-4) var(--pit-space-3);
   }
 
+  .pit-message[data-role="user"] {
+    max-width: 92%;
+  }
+
+  .pit-activity-payloads {
+    grid-template-columns: minmax(0, 1fr);
+  }
+
+  .pit-activity-description {
+    white-space: normal;
+  }
+
   /*
    * Three transport controls plus a progress bar do not fit on one 390px row —
    * squeezing them leaves the bar as an unreadable stub. Wrap so the bar keeps
diff --git a/packages/paperclip-runner/devtools/issue-thread/stream-fixture-transport.mjs b/packages/paperclip-runner/devtools/issue-thread/stream-fixture-transport.mjs
index 97c48bec702..dcd932c07e9 100644
--- a/packages/paperclip-runner/devtools/issue-thread/stream-fixture-transport.mjs
+++ b/packages/paperclip-runner/devtools/issue-thread/stream-fixture-transport.mjs
@@ -15,6 +15,8 @@
  */
 
 const DELTA_INTERVAL_MS = 220;
+export const PHASE7_STREAM_FIXTURE_PRIVATE_REASONING =
+  "PRIVATE reasoning text must never reach the browser.";
 
 /** Four deltas: enough for a browser to observe growth twice over, and short. */
 export const PHASE7_STREAM_FIXTURE_DELTAS = [
@@ -113,6 +115,16 @@ class StreamFixtureTransport {
       method: "turn/started",
       params: { threadId: "stream-fixture-thread", turn: { id: turnId, status: "inProgress" } },
     });
+    await sleep(Math.floor(DELTA_INTERVAL_MS / 2));
+    if (this.#closed || this.#interrupted.has(turnId)) return;
+    this.#queue.push({
+      method: "item/reasoning/summaryTextDelta",
+      params: {
+        threadId: "stream-fixture-thread",
+        turnId,
+        delta: PHASE7_STREAM_FIXTURE_PRIVATE_REASONING,
+      },
+    });
     for (const delta of PHASE7_STREAM_FIXTURE_DELTAS) {
       await sleep(DELTA_INTERVAL_MS);
       if (this.#closed || this.#interrupted.has(turnId)) return;
diff --git a/packages/paperclip-runner/src/issue-thread/fixtures.ts b/packages/paperclip-runner/src/issue-thread/fixtures.ts
index c2469475a78..85306f920ac 100644
--- a/packages/paperclip-runner/src/issue-thread/fixtures.ts
+++ b/packages/paperclip-runner/src/issue-thread/fixtures.ts
@@ -246,6 +246,10 @@ function baseEvidence(): Phase7EvidenceModel {
         kind: "session.started",
         ordinal: 1,
         detail: "runnerd pid 4101 · process group 4101 · thread thr-mock-7g",
+        details: [
+          { label: "Runner", value: "runnerd" },
+          { label: "State", value: "started" },
+        ],
       },
       {
         id: "ev-2",
@@ -253,6 +257,10 @@ function baseEvidence(): Phase7EvidenceModel {
         kind: "turn.started",
         ordinal: 2,
         detail: "turn-1 · dynamic tools 8 exposed / 3 withheld",
+        details: [
+          { label: "State", value: "started" },
+          { label: "Tools", value: "8 exposed, 3 withheld" },
+        ],
       },
       {
         id: "ev-3",
@@ -260,6 +268,10 @@ function baseEvidence(): Phase7EvidenceModel {
         kind: "tool.dispatched",
         ordinal: 5,
         detail: "write_document → typed result revision 4",
+        details: [
+          { label: "Operation", value: "write_document" },
+          { label: "Result", value: "typed result revision 4" },
+        ],
       },
       {
         id: "ev-4",
@@ -267,6 +279,10 @@ function baseEvidence(): Phase7EvidenceModel {
         kind: "turn.completed",
         ordinal: 9,
         detail: "turn-3 · status completed · 1 tool call",
+        details: [
+          { label: "State", value: "completed" },
+          { label: "Tool calls", value: "1" },
+        ],
       },
     ],
     state: [
diff --git a/packages/paperclip-runner/src/issue-thread/issue-thread.test.ts b/packages/paperclip-runner/src/issue-thread/issue-thread.test.ts
index f3bce91c159..de331abfd1a 100644
--- a/packages/paperclip-runner/src/issue-thread/issue-thread.test.ts
+++ b/packages/paperclip-runner/src/issue-thread/issue-thread.test.ts
@@ -276,6 +276,20 @@ describe("Phase 7 live projection", () => {
         },
         {
           id: "evidence-000002",
+          kind: "provider_event",
+          at: "2026-08-09T09:00:10.000Z",
+          turnId: "turn-1",
+          data: { event: "reasoning_delta" },
+        },
+        {
+          id: "evidence-000003",
+          kind: "provider_event",
+          at: "2026-08-09T09:00:11.000Z",
+          turnId: "turn-1",
+          data: { event: "reasoning_delta" },
+        },
+        {
+          id: "evidence-000004",
           kind: "tool_call",
           at: "2026-08-09T09:00:30.000Z",
           turnId: "turn-1",
@@ -287,7 +301,7 @@ describe("Phase 7 live projection", () => {
           },
         },
         {
-          id: "evidence-000003",
+          id: "evidence-000005",
           kind: "tool_result",
           at: "2026-08-09T09:00:31.000Z",
           turnId: "turn-1",
@@ -344,6 +358,18 @@ describe("Phase 7 live projection", () => {
     expect(items.some((item) => item.kind === "agent_message")).toBe(true);
     expect(items.some((item) => item.kind === "tool_activity")).toBe(true);
 
+    const progress = items.find((item) => item.kind === "progress_activity");
+    expect(progress).toMatchObject({
+      kind: "progress_activity",
+      activity: "thinking",
+      status: "complete",
+      label: "Thinking",
+      eventCount: 2,
+    });
+    expect(view.evidence.runner.filter(
+      (record) => record.details.some((entry) => entry.value === "reasoning_delta"),
+    )).toHaveLength(2);
+
     // The durable comment comes from the mock record the command created,
     // not from the model's prose.
     const durable = items.find((item) => item.kind === "durable_comment");
diff --git a/packages/paperclip-runner/src/issue-thread/live-projection.ts b/packages/paperclip-runner/src/issue-thread/live-projection.ts
index 4a57bb5615a..2dd21f9b5d9 100644
--- a/packages/paperclip-runner/src/issue-thread/live-projection.ts
+++ b/packages/paperclip-runner/src/issue-thread/live-projection.ts
@@ -15,6 +15,7 @@ import type {
 } from "../mock-core/phase7-control-plane-types.js";
 import {
   phase7EvidenceDetail,
+  phase7EvidenceDetails,
   redactPhase7ToolResult,
 } from "../phase7/evidence-redaction.js";
 import type {
@@ -54,6 +55,33 @@ const DISPOSITION_OPERATIONS = new Set<Phase7SemanticOperationId>([
   "request_review",
 ]);
 
+const PROGRESS_EVENTS = {
+  reasoning_delta: {
+    activity: "thinking",
+    label: "Thinking",
+    running: "Reasoning activity is arriving from Codex.",
+    complete: "Reasoning activity completed.",
+  },
+  plan_delta: {
+    activity: "planning",
+    label: "Planning",
+    running: "Codex is updating its plan.",
+    complete: "Plan activity completed.",
+  },
+  command_output_delta: {
+    activity: "command",
+    label: "Running a command",
+    running: "Command progress is arriving from Codex.",
+    complete: "Command activity completed.",
+  },
+  file_change_delta: {
+    activity: "file_change",
+    label: "Reviewing a file change",
+    running: "File-change progress is arriving from Codex.",
+    complete: "File-change activity completed.",
+  },
+} as const;
+
 export interface Phase7LiveProjectionInput {
   snapshot: Phase7LiveSessionSnapshot;
   /** Transport state owned by the server, not inferred in the browser. */
@@ -629,6 +657,7 @@ function evidenceModel(
       kind: entry.kind,
       ordinal: index + 1,
       detail: phase7EvidenceDetail(entry.kind, entry.data),
+      details: phase7EvidenceDetails(entry.kind, entry.data),
     })),
     state: calls
       .filter((pair) => pair.afterRevision !== null && pair.afterRevision !== pair.beforeRevision)
@@ -725,6 +754,49 @@ export function projectPhase7IssueThread(
     turn.items.push(...derivedRecordItems(pair, state));
   }
 
+  const progressGroups = new Map<
+    string,
+    {
+      turnId: string;
+      event: keyof typeof PROGRESS_EVENTS;
+      at: string;
+      count: number;
+    }
+  >();
+  for (const entry of snapshot.evidence) {
+    if (entry.kind !== "provider_event" || entry.turnId === null) continue;
+    const event = readString(entry.data.event) as keyof typeof PROGRESS_EVENTS;
+    if (!(event in PROGRESS_EVENTS)) continue;
+    const key = `${entry.turnId}:${event}`;
+    const group = progressGroups.get(key);
+    if (group === undefined) {
+      progressGroups.set(key, { turnId: entry.turnId, event, at: entry.at, count: 1 });
+    } else {
+      group.count += 1;
+    }
+  }
+  for (const group of progressGroups.values()) {
+    const copy = PROGRESS_EVENTS[group.event];
+    const running = snapshot.activeTurnId === group.turnId;
+    turnFor(group.turnId, group.at).items.push({
+      kind: "progress_activity",
+      id: `item-progress-${group.turnId}-${group.event}`,
+      at: group.at,
+      activity: copy.activity,
+      status: running ? "running" : "complete",
+      label: copy.label,
+      summary: running ? copy.running : copy.complete,
+      eventCount: group.count,
+    });
+  }
+
+  // The transcript, provider progress, and semantic calls are collected from
+  // separate durable record sets. Put them back into time order for a chat-like
+  // flow while relying on stable sort order for records sharing a timestamp.
+  for (const turn of turns.values()) {
+    turn.items.sort((left, right) => left.at.localeCompare(right.at));
+  }
+
   const stopRequested = snapshot.evidence.some(
     (entry) => entry.kind === "session" && readString(entry.data.action) === "stop_requested",
   );
diff --git a/packages/paperclip-runner/src/issue-thread/public-view.test.ts b/packages/paperclip-runner/src/issue-thread/public-view.test.ts
index 00e5d1aa4a2..f97678e34dd 100644
--- a/packages/paperclip-runner/src/issue-thread/public-view.test.ts
+++ b/packages/paperclip-runner/src/issue-thread/public-view.test.ts
@@ -3,6 +3,7 @@ import { describe, expect, it } from "vitest";
 import {
   phase7AllowlistedInputFields,
   phase7EvidenceDetail,
+  phase7EvidenceDetails,
   redactPhase7EvidenceData,
   redactPhase7ToolResult,
 } from "../phase7/evidence-redaction.js";
@@ -96,6 +97,10 @@ function projectedView(): Phase7IssueThreadSnapshot {
           kind: "provider_event",
           ordinal: 1,
           detail: `provider event · assistant_delta (${PROVIDER_THREAD})`,
+          details: [
+            { label: "Event", value: "assistant_delta" },
+            { label: "Provider", value: PROVIDER_THREAD },
+          ],
         },
       ],
       state: [],
@@ -179,6 +184,25 @@ describe("Phase 7 evidence redaction", () => {
     expect(phase7EvidenceDetail("provider_event", redacted)).toBe("provider event · assistant_delta");
   });
 
+  it("recognizes progress notifications without retaining their text", () => {
+    for (const method of [
+      "item/reasoning/summaryTextDelta",
+      "item/plan/delta",
+      "item/commandExecution/outputDelta",
+      "item/fileChange/outputDelta",
+    ]) {
+      const redacted = redactPhase7EvidenceData("provider_event", {
+        method,
+        params: { delta: CANARY },
+      });
+      expect(String(redacted.event)).toMatch(/_delta$/);
+      expect(JSON.stringify(redacted)).not.toContain(CANARY);
+      expect(phase7EvidenceDetails("provider_event", redacted)).toEqual([
+        { label: "Event", value: redacted.event },
+      ]);
+    }
+  });
+
   it("collapses an unknown provider method rather than echoing it", () => {
     expect(redactPhase7EvidenceData("provider_event", { method: `x/${CANARY}` })).toEqual({
       event: "other",
diff --git a/packages/paperclip-runner/src/issue-thread/public-view.ts b/packages/paperclip-runner/src/issue-thread/public-view.ts
index c5ec88b6c00..effa4c47e9d 100644
--- a/packages/paperclip-runner/src/issue-thread/public-view.ts
+++ b/packages/paperclip-runner/src/issue-thread/public-view.ts
@@ -286,6 +286,17 @@ function publicItem(item: Phase7ThreadItem, aliases: Aliases): Phase7ThreadItem
         result: publicToolResult(item.result),
         evidenceRef: publicRef(item.evidenceRef, aliases),
       };
+    case "progress_activity":
+      return {
+        kind: "progress_activity",
+        id,
+        at: item.at,
+        activity: item.activity,
+        status: item.status,
+        label: clamp(item.label),
+        summary: clamp(item.summary),
+        eventCount: item.eventCount,
+      };
     case "interaction":
       return {
         kind: "interaction",
@@ -446,6 +457,10 @@ function publicRunner(
     kind: record.kind,
     ordinal: record.ordinal,
     detail: clamp(aliases.text(record.detail)),
+    details: record.details.map((entry) => ({
+      label: clamp(entry.label),
+      value: clamp(aliases.text(entry.value), MAX_BODY_CHARS),
+    })),
   };
 }
 
diff --git a/packages/paperclip-runner/src/issue-thread/types.ts b/packages/paperclip-runner/src/issue-thread/types.ts
index ab7058295fe..b37917ef92d 100644
--- a/packages/paperclip-runner/src/issue-thread/types.ts
+++ b/packages/paperclip-runner/src/issue-thread/types.ts
@@ -197,6 +197,16 @@ export type Phase7ThreadItem =
       result: Phase7JsonValue;
       evidenceRef: Phase7EvidenceRef;
     }
+  | {
+      kind: "progress_activity";
+      id: string;
+      at: string;
+      activity: "thinking" | "planning" | "command" | "file_change";
+      status: "running" | "complete";
+      label: string;
+      summary: string;
+      eventCount: number;
+    }
   | ({ kind: "interaction"; id: string; at: string } & Phase7ThreadInteractionCard)
   | {
       kind: "document";
@@ -348,6 +358,8 @@ export interface Phase7EvidenceRunnerRecord {
   kind: string;
   ordinal: number;
   detail: string;
+  /** Complete allowlisted detail; raw provider payloads never enter this DTO. */
+  details: Array<{ label: string; value: string }>;
 }
 
 export interface Phase7EvidenceStateDiffRow {
diff --git a/packages/paperclip-runner/src/phase7/evidence-redaction.ts b/packages/paperclip-runner/src/phase7/evidence-redaction.ts
index d26ca70724a..d3511ed2587 100644
--- a/packages/paperclip-runner/src/phase7/evidence-redaction.ts
+++ b/packages/paperclip-runner/src/phase7/evidence-redaction.ts
@@ -57,8 +57,23 @@ const PROVIDER_EVENT_CATEGORIES: Readonly<Record<string, string>> = Object.freez
   "item/completed": "item_completed",
   "item/agentMessage/delta": "assistant_delta",
   "item/reasoning/delta": "reasoning_delta",
+  "item/reasoning/summaryTextDelta": "reasoning_delta",
+  "item/reasoning/textDelta": "reasoning_delta",
+  "item/plan/delta": "plan_delta",
+  "item/commandExecution/outputDelta": "command_output_delta",
+  "item/fileChange/outputDelta": "file_change_delta",
 });
 
+/**
+ * Provider notifications are reduced to this fixed vocabulary at ingestion.
+ * Exporting the classifier lets the live turn pump decide which sanitized
+ * progress events deserve an immediate browser frame without duplicating the
+ * protocol-method allowlist.
+ */
+export function phase7ProviderEventCategory(method: string): string {
+  return PROVIDER_EVENT_CATEGORIES[method] ?? "other";
+}
+
 /** Operations whose input summary is the rendered disposition body (§9). */
 const DISPOSITION_OPERATIONS: ReadonlySet<string> = new Set([
   "finish_task",
@@ -179,7 +194,7 @@ export function redactPhase7EvidenceData(
 ): Record<string, Phase7JsonValue> {
   switch (kind) {
     case "provider_event":
-      return { event: PROVIDER_EVENT_CATEGORIES[asString(data.method)] ?? "other" };
+      return { event: phase7ProviderEventCategory(asString(data.method)) };
     case "diagnostic":
       // A provider diagnostic is operator surface, not board surface. Only the
       // fact that one was recorded survives.
@@ -276,3 +291,95 @@ export function phase7EvidenceDetail(
       return kind;
   }
 }
+
+export interface Phase7EvidenceDetailRow {
+  label: string;
+  value: string;
+}
+
+/**
+ * Complete browser-safe detail for one retained event.
+ *
+ * This intentionally enumerates each field rather than stringifying `data`.
+ * The retained record is already redacted, but the public diagnostics surface
+ * remains fail-closed when a future ingestion field is added.
+ */
+export function phase7EvidenceDetails(
+  kind: Phase7EvidenceKind,
+  data: Record<string, Phase7JsonValue>,
+): Phase7EvidenceDetailRow[] {
+  const rows: Phase7EvidenceDetailRow[] = [];
+  const add = (label: string, value: Phase7JsonValue | undefined): void => {
+    if (typeof value === "string" && value.length > 0) rows.push({ label, value });
+    else if (typeof value === "number" || typeof value === "boolean") {
+      rows.push({ label, value: String(value) });
+    }
+  };
+  const addList = (label: string, value: Phase7JsonValue | undefined): void => {
+    if (!Array.isArray(value)) return;
+    const entries = value.filter((entry): entry is string => typeof entry === "string");
+    rows.push({ label, value: entries.length === 0 ? "none" : entries.join(", ") });
+  };
+
+  switch (kind) {
+    case "provider_event":
+      add("Event", data.event);
+      break;
+    case "diagnostic":
+      add("Visibility", data.diagnostic);
+      break;
+    case "session":
+      add("Action", data.action);
+      add("Session", data.sessionId);
+      add("Mode", data.mode);
+      add("Runner", data.runner);
+      add("Control plane", data.controlPlane);
+      add("Reason", data.reason);
+      break;
+    case "process":
+      add("Action", data.action);
+      add("Reason", data.reason);
+      add("Runner exited", data.runnerExited);
+      break;
+    case "cleanup":
+      add("Reason", data.reason);
+      add("Authority cleared", data.authorityCleared);
+      add("Mock stopped", data.mockStopped);
+      add("Process exited", data.processExited);
+      break;
+    case "tool_exposure":
+      add("Scenario", data.scenarioId);
+      addList("Operations", data.operationIds);
+      break;
+    case "tool_call": {
+      const input = asRecord(data.input);
+      add("Call", data.callId);
+      add("Operation", data.operationId);
+      add("Before revision", data.beforeRevision);
+      addList("Input fields", input.fields as Phase7JsonValue | undefined);
+      add("Disposition summary", input.dispositionSummary as Phase7JsonValue | undefined);
+      break;
+    }
+    case "tool_result": {
+      const result = asRecord(data.result);
+      const value = asRecord(result.result);
+      add("Call", data.callId);
+      add("Operation", data.operationId);
+      add("Before revision", data.beforeRevision);
+      add("After revision", data.afterRevision);
+      add("Outcome", result.ok === true ? "ok" : "denied");
+      add("State revision", result.stateRevision as Phase7JsonValue | undefined);
+      add("Command", value.commandId as Phase7JsonValue | undefined);
+      add("Command kind", value.commandKind as Phase7JsonValue | undefined);
+      add("Disposition", value.disposition as Phase7JsonValue | undefined);
+      add("Result revision", value.revision as Phase7JsonValue | undefined);
+      break;
+    }
+    case "interaction":
+      add("Kind", data.interactionKind);
+      add("Outcome", data.outcome);
+      add("State revision", data.stateRevision);
+      break;
+  }
+  return rows;
+}
diff --git a/packages/paperclip-runner/src/phase7/live-session.ts b/packages/paperclip-runner/src/phase7/live-session.ts
index a8c4efb09e4..ccf524ca23e 100644
--- a/packages/paperclip-runner/src/phase7/live-session.ts
+++ b/packages/paperclip-runner/src/phase7/live-session.ts
@@ -24,6 +24,7 @@ import type {
   Phase7SemanticToolResult,
 } from "../semantic-tools/types.js";
 import {
+  phase7ProviderEventCategory,
   redactPhase7EvidenceData,
   type Phase7EvidenceKind,
 } from "./evidence-redaction.js";
@@ -945,6 +946,7 @@ export class Phase7LiveSession {
     const turn = record(params.turn);
     const item = record(params.item);
     const turnId = text(params.turnId, text(turn.id));
+    const providerEvent = phase7ProviderEventCategory(notification.method);
     this.#appendEvidence("provider_event", turnId || null, {
       method: notification.method,
       params: jsonValue(params),
@@ -957,6 +959,16 @@ export class Phase7LiveSession {
         this.#turnWaiter.assistantText += text(params.delta);
         this.#publishAssistantProgress(turnId || this.#activeTurnId);
       }
+    } else if (providerEvent.endsWith("_delta")) {
+      // Reasoning, planning, command-output, and file-change progress used to
+      // be retained only for diagnostics. Emitting an activity frame here lets
+      // the thread acknowledge that work immediately, while the redaction gate
+      // still withholds provider text and chain-of-thought content.
+      this.#emit({
+        turnId: turnId || this.#activeTurnId,
+        kind: "activity",
+        reason: providerEvent,
+      });
     } else if (notification.method === "item/completed" && text(item.type) === "agentMessage") {
       const assistantText = text(item.text);
       if (assistantText.length > 0 && this.#turnWaiter !== null) {