feat: show file change types inline in summary

DESIGN.md

@@ -416,6 +416,9 @@ Do not add motion for decoration. New animation must honor
   File/folder rows, filter, summary toggle, and review progress retain desktop
   control heights and spacing; do not apply the general mobile enlargement here.
 - Hide redundant summary/shortcut detail before removing essential actions.
+  Keep the Files changed total and inline added/deleted/modified/renamed counts
+  visible in the drawer. Use file icons, semantic status colors, hover labels,
+  and accessible names; wrap the group when the sidebar is too narrow.
 - At mobile widths or coarse pointers, app-owned controls target 44px hit heights;
   icon controls also reach 44px width. Text-input sizing uses `--text-input-touch`.
   The compact View options and collapse/expand icons match the theme control's

apps/web/src/ReviewTools.tsx

@@ -1,4 +1,11 @@
-import { ChevronDownIcon, CopyIcon } from "lucide-react";
+import {
+  ChevronDownIcon,
+  CopyIcon,
+  FileMinus2Icon,
+  FilePenLineIcon,
+  FilePlus2Icon,
+  FileSymlinkIcon,
+} from "lucide-react";
 import { useEffect, useState } from "react";
 import { Button } from "@/components/ui/button";
 import {
@@ -145,6 +152,34 @@ export function ChangeSummary() {
     save("summary-collapsed", String(summaryCollapsed));
   }, [summaryCollapsed]);
   const allFiles = repository?.files ?? [];
+  const fileChanges = [
+    {
+      kind: "added",
+      Icon: FilePlus2Icon,
+      count: allFiles.filter((file) => ["A", "?", "C"].includes(file.status))
+        .length,
+      description: "Files added (including untracked and copied files)",
+    },
+    {
+      kind: "deleted",
+      Icon: FileMinus2Icon,
+      count: allFiles.filter((file) => file.status === "D").length,
+      description: "Files deleted",
+    },
+    {
+      kind: "modified",
+      Icon: FilePenLineIcon,
+      count: allFiles.filter((file) => ["M", "T", "U"].includes(file.status))
+        .length,
+      description: "Files modified (including type changes and conflicts)",
+    },
+    {
+      kind: "renamed",
+      Icon: FileSymlinkIcon,
+      count: allFiles.filter((file) => file.status === "R").length,
+      description: "Files renamed",
+    },
+  ];
   const additions = allFiles.reduce((sum, file) => sum + file.additions, 0);
   const deletions = allFiles.reduce((sum, file) => sum + file.deletions, 0);
   const reviewedCount = allFiles.filter(isReviewed).length;
@@ -166,9 +201,30 @@ export function ChangeSummary() {
       </Button>
       <div id="summary-content" hidden={summaryCollapsed}>
         <div className="sidebar-bottom">
-          <div className="summary-row">
+          <div className="summary-row summary-files-row">
             <span>Files changed</span>
-            <strong id="summary-files">{allFiles.length}</strong>
+            <div className="summary-file-counts">
+              <strong id="summary-files">{allFiles.length}</strong>
+              <div
+                className="summary-file-breakdown"
+                role="group"
+                aria-label="File changes by type"
+              >
+                {fileChanges.map(({ kind, Icon, count, description }) => (
+                  <span
+                    key={kind}
+                    className="summary-file-kind"
+                    data-kind={kind}
+                    role="img"
+                    aria-label={`${count} ${count === 1 ? "file" : "files"} ${kind}`}
+                    title={`${description}: ${count}`}
+                  >
+                    <Icon aria-hidden="true" />
+                    <span aria-hidden="true">{count.toLocaleString()}</span>
+                  </span>
+                ))}
+              </div>
+            </div>
           </div>
           <div className="summary-row">
             <span>Additions</span>

apps/web/src/review.css

@@ -745,7 +745,7 @@
 
 @media (max-width: 767px) {
   .sidebar-bottom .summary-label,
-  .sidebar-bottom .summary-row,
+  .sidebar-bottom .summary-row:not(.summary-files-row),
   .sidebar-bottom .change-bar {
     display: none;
   }

apps/web/src/style.css

@@ -329,6 +329,47 @@ kbd {
 .summary-row strong {
   font: var(--text-sm) var(--font-mono);
 }
+.summary-files-row {
+  align-items: center;
+  flex-wrap: wrap;
+  gap: var(--space-1) var(--space-2);
+}
+.summary-file-counts,
+.summary-file-breakdown,
+.summary-file-kind {
+  display: flex;
+  align-items: center;
+}
+.summary-file-counts {
+  margin-left: auto;
+  gap: var(--space-2);
+}
+.summary-file-breakdown {
+  flex-wrap: wrap;
+  gap: var(--space-2);
+  border-left: 1px solid var(--border-muted);
+  padding-left: var(--space-2);
+}
+.summary-file-kind {
+  gap: var(--space-1);
+  font: var(--text-xs) var(--font-mono);
+}
+.summary-file-kind svg {
+  width: var(--icon-sm);
+  height: var(--icon-sm);
+}
+.summary-file-kind[data-kind="added"] {
+  color: var(--success);
+}
+.summary-file-kind[data-kind="deleted"] {
+  color: var(--error);
+}
+.summary-file-kind[data-kind="modified"] {
+  color: var(--warning);
+}
+.summary-file-kind[data-kind="renamed"] {
+  color: var(--accent);
+}
 .change-bar {
   height: var(--space-1);
   background: var(--error);

apps/web/test/browser/app.spec.ts

@@ -17,6 +17,42 @@ async function resolvedRadius(
 
 test.beforeEach(async ({ request }) => resetFixtureState(request));
 
+test("file summary counts change types across filtering and mobile", async ({
+  page,
+}) => {
+  await page.goto("/");
+  const summary = page.getByRole("region", { name: "Summary", exact: true });
+  await expect(summary.locator("#summary-files")).toHaveText("12");
+  for (const label of [
+    "4 files added",
+    "2 files deleted",
+    "5 files modified",
+    "1 file renamed",
+  ]) {
+    await expect(summary.getByRole("img", { name: label })).toBeVisible();
+  }
+  await page.getByRole("searchbox", { name: "Filter files" }).fill("value.ts");
+  await expect(page.locator("#file-tree [data-path]")).toHaveCount(1);
+  await expect(summary.locator("#summary-files")).toHaveText("12");
+  await expect(
+    summary.getByRole("img", { name: "1 file renamed" }),
+  ).toBeVisible();
+
+  await page.setViewportSize({ width: 390, height: 844 });
+  await page.getByRole("button", { name: "Show file sidebar" }).click();
+  await expect(summary.locator("#summary-files")).toBeVisible();
+  await expect(
+    summary.getByRole("img", { name: "4 files added" }),
+  ).toBeVisible();
+  await expect(
+    summary.getByRole("img", { name: "1 file renamed" }),
+  ).toBeVisible();
+  const row = summary.locator(".summary-files-row");
+  expect(
+    await row.evaluate((element) => element.scrollWidth <= element.clientWidth),
+  ).toBe(true);
+});
+
 test("disabled comments issue no requests and expose no comment UI", async ({
   page,
 }) => {